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  1. Article ; Online: Muography applications developed by IFIN-HH.

    Mitrica, Bogdan / Stanca, Denis / Cautisanu, Bogdan / Niculescu-Oglinzanu, Mihai / Balaceanu, Alexandru / Gherghel-Lascu, Alexandru / Munteanu, Andreea / Saftoiu, Alexandra / Mosu, Toma / Margineanu, Romul / Alkotbe, Bashar

    Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

    2018  Volume 377, Issue 2137

    Abstract: Cosmic-ray muons have been studied at IFIN-HH for more than 20 years. Starting as fundamental physics research, the muon flux measurements bring new directions of study regarding muography. Two new directions have been recently developed: underground ... ...

    Abstract Cosmic-ray muons have been studied at IFIN-HH for more than 20 years. Starting as fundamental physics research, the muon flux measurements bring new directions of study regarding muography. Two new directions have been recently developed: underground muon scanning of old mining sites in order to detect the possible presence of unknown cavities and underwater scanning of ships in commercial harbours in order to prevent the illegal traffic of radioactive materials. The main goal of the first direction of study is to improve the security of underground civilian and industrial infrastructures, by starting the development of a new, innovative detection system that can be used to identify potentially dangerous conditions using a non-invasive, totally safe method. The method proposed uses information provided by a device placed underground that measures directional cosmic muon flux and identifies anomalies produced by irregularities in the geological layers above. For the second direction of study, the method proposed is based on the detection and analysis of the cosmic muon flux. The high-density materials (uranium, lead-used for radiation shielding, etc.) cause a decrease in the directional muon flux. The detection system will be submerged underneath the ship that will be scanned, being able to locate illegal radioactive materials without exposing any personnel to radiation or contamination. Correlated with simulations based on the known configuration of the ship scanned, the data provided by the detection system will provide the location and dimensions of the undeclared material transported.This article is part of the Theo Murphy meeting issue 'Cosmic-ray muography'.
    Language English
    Publishing date 2018-12-10
    Publishing country England
    Document type Journal Article
    ZDB-ID 208381-4
    ISSN 1471-2962 ; 0080-4614 ; 0264-3820 ; 0264-3952 ; 1364-503X
    ISSN (online) 1471-2962
    ISSN 0080-4614 ; 0264-3820 ; 0264-3952 ; 1364-503X
    DOI 10.1098/rsta.2018.0137
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Book ; Online: A feasibility study to track cosmic muons using a detector with SiPM devices based on amplitude discrimination

    Stanca, D. / Niculescu-Oglinzanu, M. / Brancus, I. / Mitrica, B. / Balaceanu, A. / Cautisanu, B. / Gherghel-Lascu, A. / Haungs, A. / Mathes, H. -J. / Rebel, H. / Saftoiu, A. / Sima, O. / Mosu, T.

    2016  

    Abstract: The possibility to build a SiPM-readout muon detector (SiRO), using plastic scintillators with optical fibers as sensitive volume and readout by SiPM photo-diodes, is investigated. SiRO shall be used for tracking cosmic muons based on amplitude ... ...

    Abstract The possibility to build a SiPM-readout muon detector (SiRO), using plastic scintillators with optical fibers as sensitive volume and readout by SiPM photo-diodes, is investigated. SiRO shall be used for tracking cosmic muons based on amplitude discrimination. The detector concept foresees a stack of 6 active layers, grouped in 3 sandwiches for determining the muon trajectories through 3 planes. After investigating the characteristics of the photodiodes, tests have been performed using two detection modules, each being composed from a plastic scintillator sheet, $100 \times 25 \times 1\,$cm$^{3}$, with 12 parallel, equidistant ditches; each ditch filled with an optical fiber of $1.5\,$mm thickness and always two fibers connected to form a channel. The attenuation of the light response along the optical fiber and across the channels have been tested. The measurements of the incident muons based on the input amplitude discrimination indicate that this procedure is not efficient and therefore not sufficient, as only about 30\% of the measured events could be used in the reconstruction of the muon trajectories. Based on the studies presented in this paper, the layout used for building the SiRO detector will be changed as well as the analog acquisition technique will be replaced by a digital one.
    Keywords Physics - Instrumentation and Detectors ; High Energy Physics - Experiment
    Subject code 621
    Publishing date 2016-03-17
    Publishing country us
    Document type Book ; Online
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  3. Article ; Online: Demonstrating Agreement between Radio and Fluorescence Measurements of the Depth of Maximum of Extensive Air Showers at the Pierre Auger Observatory.

    Abdul Halim, A / Abreu, P / Aglietta, M / Allekotte, I / Cheminant, K Almeida / Almela, A / Aloisio, R / Alvarez-Muñiz, J / Yebra, J Ammerman / Anastasi, G A / Anchordoqui, L / Andrada, B / Andringa, S / Anukriti / Apollonio, L / Aramo, C / Ferreira, P R Araújo / Arnone, E / Velázquez, J C Arteaga /
    Assis, P / Avila, G / Avocone, E / Bakalova, A / Barbato, F / Mocellin, A Bartz / Bellido, J A / Berat, C / Bertaina, M E / Bhatta, G / Bianciotto, M / Biermann, P L / Binet, V / Bismark, K / Bister, T / Biteau, J / Blazek, J / Bleve, C / Blümer, J / Boháčová, M / Boncioli, D / Bonifazi, C / Arbeletche, L Bonneau / Borodai, N / Brack, J / Orchera, P G Brichetto / Briechle, F L / Bueno, A / Buitink, S / Buscemi, M / Büsken, M / Bwembya, A / Caballero-Mora, K S / Cabana-Freire, S / Caccianiga, L / Caruso, R / Castellina, A / Catalani, F / Cataldi, G / Cazon, L / Cerda, M / Cermenati, A / Chinellato, J A / Chudoba, J / Chytka, L / Clay, R W / Cerutti, A C Cobos / Colalillo, R / Coleman, A / Coluccia, M R / Conceição, R / Condorelli, A / Consolati, G / Conte, M / Convenga, F / Dos Santos, D Correia / Costa, P J / Covault, C E / Cristinziani, M / Sanchez, C S Cruz / Dasso, S / Daumiller, K / Dawson, B R / de Almeida, R M / de Jesús, J / de Jong, S J / Neto, J R T de Mello / De Mitri, I / de Oliveira, J / Franco, D de Oliveira / de Palma, F / de Souza, V / de Errico, B P de Souza / De Vito, E / Del Popolo, A / Deligny, O / Denner, N / Deval, L / di Matteo, A / Dobre, M / Dobrigkeit, C / D'Olivo, J C / Mendes, L M Domingues / Dorosti, Q / Dos Anjos, J C / Dos Anjos, R C / Ebr, J / Ellwanger, F / Emam, M / Engel, R / Epicoco, I / Erdmann, M / Etchegoyen, A / Evoli, C / Falcke, H / Farmer, J / Farrar, G / Fauth, A C / Fazzini, N / Feldbusch, F / Fenu, F / Fernandes, A / Fick, B / Figueira, J M / Filipčič, A / Fitoussi, T / Flaggs, B / Fodran, T / Fujii, T / Fuster, A / Galea, C / Galelli, C / García, B / Gaudu, C / Gemmeke, H / Gesualdi, F / Gherghel-Lascu, A / Ghia, P L / Giaccari, U / Glombitza, J / Gobbi, F / Gollan, F / Golup, G / Berisso, M Gómez / Vitale, P F Gómez / Gongora, J P / González, J M / González, N / Goos, I / Góra, D / Gorgi, A / Gottowik, M / Grubb, T D / Guarino, F / Guedes, G P / Guido, E / Gülzow, L / Hahn, S / Hamal, P / Hampel, M R / Hansen, P / Harari, D / Harvey, V M / Haungs, A / Hebbeker, T / Hojvat, C / Hörandel, J R / Horvath, P / Hrabovský, M / Huege, T / Insolia, A / Isar, P G / Janecek, P / Jilek, V / Johnsen, J A / Jurysek, J / Kampert, K-H / Keilhauer, B / Khakurdikar, A / Covilakam, V V Kizakke / Klages, H O / Kleifges, M / Knapp, F / Köhler, J / Kunka, N / Lago, B L / Langner, N / de Oliveira, M A Leigui / Lema-Capeans, Y / Letessier-Selvon, A / Lhenry-Yvon, I / Lopes, L / Lu, L / Luce, Q / Lundquist, J P / Payeras, A Machado / Majercakova, M / Mandat, D / Manning, B C / Mantsch, P / Marafico, S / Mariani, F M / Mariazzi, A G / Mariş, I C / Marsella, G / Martello, D / Martinelli, S / Bravo, O Martínez / Martins, M A / Mathes, H-J / Matthews, J / Matthiae, G / Mayotte, E / Mayotte, S / Mazur, P O / Medina-Tanco, G / Meinert, J / Melo, D / Menshikov, A / Merx, C / Michal, S / Micheletti, M I / Miramonti, L / Mollerach, S / Montanet, F / Morejon, L / Morello, C / Mulrey, K / Mussa, R / Namasaka, W M / Negi, S / Nellen, L / Nguyen, K / Nicora, G / Niechciol, M / Nitz, D / Nosek, D / Novotny, V / Nožka, L / Nucita, A / Núñez, L A / Oliveira, C / Palatka, M / Pallotta, J / Panja, S / Parente, G / Paulsen, T / Pawlowsky, J / Pech, M / Pękala, J / Pelayo, R / Pereira, L A S / Martins, E E Pereira / Armand, J Perez / Bertolli, C Pérez / Perrone, L / Petrera, S / Petrucci, C / Pierog, T / Pimenta, M / Platino, M / Pont, B / Pothast, M / Shahvar, M Pourmohammad / Privitera, P / Prouza, M / Puyleart, A / Querchfeld, S / Rautenberg, J / Ravignani, D / Akim, J V Reginatto / Reininghaus, M / Ridky, J / Riehn, F / Risse, M / Rizi, V / de Carvalho, W Rodrigues / Rodriguez, E / Rojo, J Rodriguez / Roncoroni, M J / Rossoni, S / Roth, M / Roulet, E / Rovero, A C / Ruehl, P / Saftoiu, A / Saharan, M / Salamida, F / Salazar, H / Salina, G / Gomez, J D Sanabria / Sánchez, F / Santos, E M / Santos, E / Sarazin, F / Sarmento, R / Sato, R / Savina, P / Schäfer, C M / Scherini, V / Schieler, H / Schimassek, M / Schimp, M / Schmidt, D / Scholten, O / Schoorlemmer, H / Schovánek, P / Schröder, F G / Schulte, J / Schulz, T / Sciutto, S J / Scornavacche, M / Segreto, A / Sehgal, S / Shivashankara, S U / Sigl, G / Silli, G / Sima, O / Simkova, K / Simon, F / Smau, R / Šmída, R / Sommers, P / Soriano, J F / Squartini, R / Stadelmaier, M / Stanič, S / Stasielak, J / Stassi, P / Strähnz, S / Straub, M / Suomijärvi, T / Supanitsky, A D / Svozilikova, Z / Szadkowski, Z / Tairli, F / Tapia, A / Taricco, C / Timmermans, C / Tkachenko, O / Tobiska, P / Peixoto, C J Todero / Tomé, B / Torrès, Z / Travaini, A / Travnicek, P / Trimarelli, C / Tueros, M / Unger, M / Vaclavek, L / Vacula, M / Galicia, J F Valdés / Valore, L / Varela, E / Vásquez-Ramírez, A / Veberič, D / Ventura, C / Quispe, I D Vergara / Verzi, V / Vicha, J / Vink, J / Vorobiov, S / Watanabe, C / Watson, A A / Weindl, A / Wiencke, L / Wilczyński, H / Wittkowski, D / Wundheiler, B / Yue, B / Yushkov, A / Zapparrata, O / Zas, E / Zavrtanik, D / Zavrtanik, M

    Physical review letters

    2024  Volume 132, Issue 2, Page(s) 21001

    Abstract: We show, for the first time, radio measurements of the depth of shower maximum (X_{max}) of air showers induced by cosmic rays that are compared to measurements of the established fluorescence method at the same location. Using measurements at the Pierre ...

    Abstract We show, for the first time, radio measurements of the depth of shower maximum (X_{max}) of air showers induced by cosmic rays that are compared to measurements of the established fluorescence method at the same location. Using measurements at the Pierre Auger Observatory we show full compatibility between our radio and the previously published fluorescence dataset, and between a subset of air showers observed simultaneously with both radio and fluorescence techniques, a measurement setup unique to the Pierre Auger Observatory. Furthermore, we show radio X_{max} resolution as a function of energy and demonstrate the ability to make competitive high-resolution X_{max} measurements with even a sparse radio array. With this, we show that the radio technique is capable of cosmic-ray mass composition studies, both at Auger and at other experiments.
    Language English
    Publishing date 2024-01-26
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.132.021001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Limits to Gauge Coupling in the Dark Sector Set by the Nonobservation of Instanton-Induced Decay of Super-Heavy Dark Matter in the Pierre Auger Observatory Data.

    Abreu, P / Aglietta, M / Albury, J M / Allekotte, I / Almeida Cheminant, K / Almela, A / Aloisio, R / Alvarez-Muñiz, J / Alves Batista, R / Ammerman Yebra, J / Anastasi, G A / Anchordoqui, L / Andrada, B / Andringa, S / Aramo, C / Araújo Ferreira, P R / Arnone, E / Arteaga Velázquez, J C / Asorey, H /
    Assis, P / Avila, G / Avocone, E / Badescu, A M / Bakalova, A / Balaceanu, A / Barbato, F / Bellido, J A / Berat, C / Bertaina, M E / Bhatta, G / Biermann, P L / Binet, V / Bismark, K / Bister, T / Biteau, J / Blazek, J / Bleve, C / Blümer, J / Boháčová, M / Boncioli, D / Bonifazi, C / Bonneau Arbeletche, L / Borodai, N / Botti, A M / Brack, J / Bretz, T / Brichetto Orchera, P G / Briechle, F L / Buchholz, P / Bueno, A / Buitink, S / Buscemi, M / Büsken, M / Caballero-Mora, K S / Caccianiga, L / Canfora, F / Caracas, I / Caruso, R / Castellina, A / Catalani, F / Cataldi, G / Cazon, L / Cerda, M / Chinellato, J A / Chudoba, J / Chytka, L / Clay, R W / Cobos Cerutti, A C / Colalillo, R / Coleman, A / Coluccia, M R / Conceição, R / Condorelli, A / Consolati, G / Contreras, F / Convenga, F / Correia Dos Santos, D / Covault, C E / Dasso, S / Daumiller, K / Dawson, B R / Day, J A / de Almeida, R M / de Jesús, J / de Jong, S J / de Mello Neto, J R T / De Mitri, I / de Oliveira, J / de Oliveira Franco, D / de Palma, F / de Souza, V / De Vito, E / Del Popolo, A / Del Río, M / Deligny, O / Deval, L / di Matteo, A / Dobre, M / Dobrigkeit, C / D'Olivo, J C / Domingues Mendes, L M / Dos Anjos, R C / Dova, M T / Ebr, J / Engel, R / Epicoco, I / Erdmann, M / Escobar, C O / Etchegoyen, A / Falcke, H / Farmer, J / Farrar, G / Fauth, A C / Fazzini, N / Feldbusch, F / Fenu, F / Fick, B / Figueira, J M / Filipčič, A / Fitoussi, T / Fodran, T / Fujii, T / Fuster, A / Galea, C / Galelli, C / García, B / Garcia Vegas, A L / Gemmeke, H / Gesualdi, F / Gherghel-Lascu, A / Ghia, P L / Giaccari, U / Giammarchi, M / Glombitza, J / Gobbi, F / Gollan, F / Golup, G / Gómez Berisso, M / Gómez Vitale, P F / Gongora, J P / González, J M / González, N / Goos, I / Góra, D / Gorgi, A / Gottowik, M / Grubb, T D / Guarino, F / Guedes, G P / Guido, E / Hahn, S / Hamal, P / Hampel, M R / Hansen, P / Harari, D / Harvey, V M / Haungs, A / Hebbeker, T / Heck, D / Hill, G C / Hojvat, C / Hörandel, J R / Horvath, P / Hrabovský, M / Huege, T / Insolia, A / Isar, P G / Janecek, P / Johnsen, J A / Jurysek, J / Kääpä, A / Kampert, K H / Keilhauer, B / Khakurdikar, A / Kizakke Covilakam, V V / Klages, H O / Kleifges, M / Kleinfeller, J / Knapp, F / Kunka, N / Lago, B L / Langner, N / Leigui de Oliveira, M A / Lenok, V / Letessier-Selvon, A / Lhenry-Yvon, I / Lo Presti, D / Lopes, L / López, R / Lu, L / Luce, Q / Lundquist, J P / Machado Payeras, A / Mancarella, G / Mandat, D / Manning, B C / Manshanden, J / Mantsch, P / Marafico, S / Mariani, F M / Mariazzi, A G / Mariş, I C / Marsella, G / Martello, D / Martinelli, S / Martínez Bravo, O / Mastrodicasa, M / Mathes, H J / Matthews, J / Matthiae, G / Mayotte, E / Mayotte, S / Mazur, P O / Medina-Tanco, G / Melo, D / Menshikov, A / Michal, S / Micheletti, M I / Miramonti, L / Mollerach, S / Montanet, F / Morejon, L / Morello, C / Mostafá, M / Müller, A L / Muller, M A / Mulrey, K / Mussa, R / Muzio, M / Namasaka, W M / Nasr-Esfahani, A / Nellen, L / Nicora, G / Niculescu-Oglinzanu, M / Niechciol, M / Nitz, D / Norwood, I / Nosek, D / Novotny, V / Nožka, L / Nucita, A / Núñez, L A / Oliveira, C / Palatka, M / Pallotta, J / Papenbreer, P / Parente, G / Parra, A / Pawlowsky, J / Pech, M / Pękala, J / Pelayo, R / Peña-Rodriguez, J / Pereira Martins, E E / Perez Armand, J / Pérez Bertolli, C / Perrone, L / Petrera, S / Petrucci, C / Pierog, T / Pimenta, M / Pirronello, V / Platino, M / Pont, B / Pothast, M / Privitera, P / Prouza, M / Puyleart, A / Querchfeld, S / Rautenberg, J / Ravignani, D / Reininghaus, M / Ridky, J / Riehn, F / Risse, M / Rizi, V / Rodrigues de Carvalho, W / Rodriguez Rojo, J / Roncoroni, M J / Rossoni, S / Roth, M / Roulet, E / Rovero, A C / Ruehl, P / Saftoiu, A / Saharan, M / Salamida, F / Salazar, H / Salina, G / Sanabria Gomez, J D / Sánchez, F / Santos, E M / Santos, E / Sarazin, F / Sarmento, R / Sarmiento-Cano, C / Sato, R / Savina, P / Schäfer, C M / Scherini, V / Schieler, H / Schimassek, M / Schimp, M / Schlüter, F / Schmidt, D / Scholten, O / Schoorlemmer, H / Schovánek, P / Schröder, F G / Schulte, J / Schulz, T / Sciutto, S J / Scornavacche, M / Segreto, A / Sehgal, S / Shellard, R C / Sigl, G / Silli, G / Sima, O / Smau, R / Šmída, R / Sommers, P / Soriano, J F / Squartini, R / Stadelmaier, M / Stanca, D / Stanič, S / Stasielak, J / Stassi, P / Streich, A / Suárez-Durán, M / Sudholz, T / Suomijärvi, T / Supanitsky, A D / Szadkowski, Z / Tapia, A / Taricco, C / Timmermans, C / Tkachenko, O / Tobiska, P / Todero Peixoto, C J / Tomé, B / Torrès, Z / Travaini, A / Travnicek, P / Trimarelli, C / Tueros, M / Ulrich, R / Unger, M / Vaclavek, L / Vacula, M / Valdés Galicia, J F / Valore, L / Varela, E / Vásquez-Ramírez, A / Veberič, D / Ventura, C / Vergara Quispe, I D / Verzi, V / Vicha, J / Vink, J / Vorobiov, S / Wahlberg, H / Watanabe, C / Watson, A A / Weindl, A / Wiencke, L / Wilczyński, H / Wittkowski, D / Wundheiler, B / Yushkov, A / Zapparrata, O / Zas, E / Zavrtanik, D / Zavrtanik, M / Zehrer, L

    Physical review letters

    2023  Volume 130, Issue 6, Page(s) 61001

    Abstract: Instantons, which are nonperturbative solutions to Yang-Mills equations, provide a signal for the occurrence of quantum tunneling between distinct classes of vacua. They can give rise to decays of particles otherwise forbidden. Using data collected at ... ...

    Abstract Instantons, which are nonperturbative solutions to Yang-Mills equations, provide a signal for the occurrence of quantum tunneling between distinct classes of vacua. They can give rise to decays of particles otherwise forbidden. Using data collected at the Pierre Auger Observatory, we search for signatures of such instanton-induced processes that would be suggestive of super-heavy particles decaying in the Galactic halo. These particles could have been produced during the post-inflationary epoch and match the relic abundance of dark matter inferred today. The nonobservation of the signatures searched for allows us to derive a bound on the reduced coupling constant of gauge interactions in the dark sector: α_{X}≲0.09, for 10^{9}≲M_{X}/GeV<10^{19}. Conversely, we obtain that, for instance, a reduced coupling constant α_{X}=0.09 excludes masses M_{X}≳3×10^{13}  GeV. In the context of dark matter production from gravitational interactions alone, we illustrate how these bounds are complementary to those obtained on the Hubble rate at the end of inflation from the nonobservation of tensor modes in the cosmological microwave background.
    Language English
    Publishing date 2023-02-20
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.130.061001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Confronting the EPOS-LHC model predictions on the charged particle and muon attenuation lengths of EAS with the measurements of the KASCADE-Grande observatory

    Arteaga-Velázquez J.C. / Apel W.D. / Bekk K. / Bertaina M. / Blümer J. / Bozdog H. / Brancus I.M. / Cantoni E. / Chiavassa A. / Cossavella F. / Daumiller K. / Souza V. de / Pierro F. Di / Doll P. / Engel R. / Engler J. / Fuchs B. / Fuhrmann D. / Gherghel-Lascu A. /
    Gils H.J. / Glasstetter R. / Grupen C. / Haungs A. / Heck D. / Hörandel J.R. / Huber D. / Huege T. / Kampert K.-H. / Kang D. / Klages H.O. / Link K. / Łuczak P. / Mathes H.J. / Mayer H.J. / Milke J. / Mitrica B. / Morello C. / Oehlschläger J. / Ostapchenko S. / Palmieri N. / Petcu M. / Pierog T. / Rebel H. / Roth M. / Schieler H. / Schoo S. / Schröder F.G. / Sima O. / Toma G. / Trinchero G.C. / Ulrich H. / Weindl A. / Wochele J. / Zabierowski J.

    EPJ Web of Conferences, Vol 99, p

    2015  Volume 12002

    Abstract: KASCADE-Grande was an air-shower experiment designed to study cosmic rays between 1016 and 1018 eV. The instrument was located at the site of the Karlsruhe Institute of Technology, Germany at an altitude of 110 m a.s.l. and covered an area of 0.5 km2. ... ...

    Abstract KASCADE-Grande was an air-shower experiment designed to study cosmic rays between 1016 and 1018 eV. The instrument was located at the site of the Karlsruhe Institute of Technology, Germany at an altitude of 110 m a.s.l. and covered an area of 0.5 km2. KASCADE-Grande consisted of several detector systems dedicated to measure different components of the EAS generated by the primary cosmic rays, i.e., the muon and the electron contents of the air-shower. With such a number of EAS observables and the precision of the measurements, the KASCADE-Grande data can be used to not only study in detail the properties of cosmic rays but also to test the predictions of hadronic-interaction models. In this work, in particular, the attenuation lengths of the muon number and the charged number of particles of EAS in the atmosphere were extracted from the KASCADE-Grande data and the results were compared with the predictions of the new EPOS-LHC hadronic-interaction model.
    Keywords Science ; Q ; Physics ; QC1-999
    Subject code 530
    Language English
    Publishing date 2015-01-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
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  6. Article ; Online: Measurement of the Fluctuations in the Number of Muons in Extensive Air Showers with the Pierre Auger Observatory.

    Aab, A / Abreu, P / Aglietta, M / Albury, J M / Allekotte, I / Almela, A / Alvarez-Muñiz, J / Alves Batista, R / Anastasi, G A / Anchordoqui, L / Andrada, B / Andringa, S / Aramo, C / Araújo Ferreira, P R / Asorey, H / Assis, P / Avila, G / Badescu, A M / Bakalova, A /
    Balaceanu, A / Barbato, F / Barreira Luz, R J / Becker, K H / Bellido, J A / Berat, C / Bertaina, M E / Bertou, X / Biermann, P L / Bister, T / Biteau, J / Blazek, J / Bleve, C / Boháčová, M / Boncioli, D / Bonifazi, C / Bonneau Arbeletche, L / Borodai, N / Botti, A M / Brack, J / Bretz, T / Briechle, F L / Buchholz, P / Bueno, A / Buitink, S / Buscemi, M / Caballero-Mora, K S / Caccianiga, L / Cancio, A / Canfora, F / Caracas, I / Carceller, J M / Caruso, R / Castellina, A / Catalani, F / Cataldi, G / Cazon, L / Cerda, M / Chinellato, J A / Choi, K / Chudoba, J / Chytka, L / Clay, R W / Cobos Cerutti, A C / Colalillo, R / Coleman, A / Coluccia, M R / Conceição, R / Condorelli, A / Consolati, G / Contreras, F / Convenga, F / Covault, C E / Dasso, S / Daumiller, K / Dawson, B R / Day, J A / de Almeida, R M / de Jesús, J / de Jong, S J / De Mauro, G / de Mello Neto, J R T / De Mitri, I / de Oliveira, J / de Oliveira Franco, D / de Souza, V / De Vito, E / Debatin, J / Del Río, M / Deligny, O / Dembinski, H / Dhital, N / Di Matteo, A / Dobrigkeit, C / D'Olivo, J C / Dos Anjos, R C / Dova, M T / Ebr, J / Engel, R / Epicoco, I / Erdmann, M / Escobar, C O / Etchegoyen, A / Falcke, H / Farmer, J / Farrar, G / Fauth, A C / Fazzini, N / Feldbusch, F / Fenu, F / Fick, B / Figueira, J M / Filipčič, A / Fodran, T / Freire, M M / Fujii, T / Fuster, A / Galea, C / Galelli, C / García, B / Garcia Vegas, A L / Gemmeke, H / Gesualdi, F / Gherghel-Lascu, A / Ghia, P L / Giaccari, U / Giammarchi, M / Giller, M / Glombitza, J / Gobbi, F / Gollan, F / Golup, G / Gómez Berisso, M / Gómez Vitale, P F / Gongora, J P / González, N / Goos, I / Góra, D / Gorgi, A / Gottowik, M / Grubb, T D / Guarino, F / Guedes, G P / Guido, E / Hahn, S / Halliday, R / Hampel, M R / Hansen, P / Harari, D / Harvey, V M / Haungs, A / Hebbeker, T / Heck, D / Hill, G C / Hojvat, C / Hörandel, J R / Horvath, P / Hrabovský, M / Huege, T / Hulsman, J / Insolia, A / Isar, P G / Johnsen, J A / Jurysek, J / Kääpä, A / Kampert, K H / Keilhauer, B / Kemp, J / Klages, H O / Kleifges, M / Kleinfeller, J / Köpke, M / Kukec Mezek, G / Lago, B L / LaHurd, D / Lang, R G / Langner, N / Leigui de Oliveira, M A / Lenok, V / Letessier-Selvon, A / Lhenry-Yvon, I / Lo Presti, D / Lopes, L / López, R / Lorek, R / Luce, Q / Lucero, A / Lundquist, J P / Machado Payeras, A / Mancarella, G / Mandat, D / Manning, B C / Manshanden, J / Mantsch, P / Marafico, S / Mariazzi, A G / Mariş, I C / Marsella, G / Martello, D / Martinez, H / Martínez Bravo, O / Mastrodicasa, M / Mathes, H J / Matthews, J / Matthiae, G / Mayotte, E / Mazur, P O / Medina-Tanco, G / Melo, D / Menshikov, A / Merenda, K-D / Michal, S / Micheletti, M I / Miramonti, L / Mollerach, S / Montanet, F / Morello, C / Mostafá, M / Müller, A L / Muller, M A / Mulrey, K / Mussa, R / Muzio, M / Namasaka, W M / Nellen, L / Niculescu-Oglinzanu, M / Niechciol, M / Nitz, D / Nosek, D / Novotny, V / Nožka, L / Nucita, A / Núñez, L A / Palatka, M / Pallotta, J / Papenbreer, P / Parente, G / Parra, A / Pech, M / Pedreira, F / Pȩkala, J / Pelayo, R / Peña-Rodriguez, J / Perez Armand, J / Perlin, M / Perrone, L / Petrera, S / Pierog, T / Pimenta, M / Pirronello, V / Platino, M / Pont, B / Pothast, M / Privitera, P / Prouza, M / Puyleart, A / Querchfeld, S / Rautenberg, J / Ravignani, D / Reininghaus, M / Ridky, J / Riehn, F / Risse, M / Ristori, P / Rizi, V / Rodrigues de Carvalho, W / Rodriguez Rojo, J / Roncoroni, M J / Roth, M / Roulet, E / Rovero, A C / Ruehl, P / Saffi, S J / Saftoiu, A / Salamida, F / Salazar, H / Salina, G / Sanabria Gomez, J D / Sánchez, F / Santos, E M / Santos, E / Sarazin, F / Sarmento, R / Sarmiento-Cano, C / Sato, R / Savina, P / Schäfer, C M / Scherini, V / Schieler, H / Schimassek, M / Schimp, M / Schlüter, F / Schmidt, D / Scholten, O / Schovánek, P / Schröder, F G / Schröder, S / Schulte, J / Sciutto, S J / Scornavacche, M / Shellard, R C / Sigl, G / Silli, G / Sima, O / Šmída, R / Sommers, P / Soriano, J F / Souchard, J / Squartini, R / Stadelmaier, M / Stanca, D / Stanič, S / Stasielak, J / Stassi, P / Streich, A / Suárez-Durán, M / Sudholz, T / Suomijärvi, T / Supanitsky, A D / Šupík, J / Szadkowski, Z / Taboada, A / Tapia, A / Timmermans, C / Tkachenko, O / Tobiska, P / Todero Peixoto, C J / Tomé, B / Torralba Elipe, G / Travaini, A / Travnicek, P / Trimarelli, C / Trini, M / Tueros, M / Ulrich, R / Unger, M / Vaclavek, L / Vacula, M / Valdés Galicia, J F / Valiño, I / Valore, L / Varela, E / Varma K C, V / Vásquez-Ramírez, A / Veberič, D / Ventura, C / Vergara Quispe, I D / Verzi, V / Vicha, J / Vink, J / Vorobiov, S / Wahlberg, H / Watson, A A / Weber, M / Weindl, A / Wiencke, L / Wilczyński, H / Winchen, T / Wirtz, M / Wittkowski, D / Wundheiler, B / Yushkov, A / Zapparrata, O / Zas, E / Zavrtanik, D / Zavrtanik, M / Zehrer, L / Zepeda, A

    Physical review letters

    2021  Volume 126, Issue 15, Page(s) 152002

    Abstract: We present the first measurement of the fluctuations in the number of muons in extensive air showers produced by ultrahigh energy cosmic rays. We find that the measured fluctuations are in good agreement with predictions from air shower simulations. This ...

    Abstract We present the first measurement of the fluctuations in the number of muons in extensive air showers produced by ultrahigh energy cosmic rays. We find that the measured fluctuations are in good agreement with predictions from air shower simulations. This observation provides new insights into the origin of the previously reported deficit of muons in air shower simulations and constrains models of hadronic interactions at ultrahigh energies. Our measurement is compatible with the muon deficit originating from small deviations in the predictions from hadronic interaction models of particle production that accumulate as the showers develop.
    Language English
    Publishing date 2021-04-30
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.126.152002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Features of the Energy Spectrum of Cosmic Rays above 2.5×10^{18}  eV Using the Pierre Auger Observatory.

    Aab, A / Abreu, P / Aglietta, M / Albury, J M / Allekotte, I / Almela, A / Alvarez Castillo, J / Alvarez-Muñiz, J / Alves Batista, R / Anastasi, G A / Anchordoqui, L / Andrada, B / Andringa, S / Aramo, C / Araújo Ferreira, P R / Asorey, H / Assis, P / Avila, G / Badescu, A M /
    Bakalova, A / Balaceanu, A / Barbato, F / Barreira Luz, R J / Becker, K H / Bellido, J A / Berat, C / Bertaina, M E / Bertou, X / Biermann, P L / Bister, T / Biteau, J / Blanco, A / Blazek, J / Bleve, C / Boháčová, M / Boncioli, D / Bonifazi, C / Bonneau Arbeletche, L / Borodai, N / Botti, A M / Brack, J / Bretz, T / Briechle, F L / Buchholz, P / Bueno, A / Buitink, S / Buscemi, M / Caballero-Mora, K S / Caccianiga, L / Calcagni, L / Cancio, A / Canfora, F / Caracas, I / Carceller, J M / Caruso, R / Castellina, A / Catalani, F / Cataldi, G / Cazon, L / Cerda, M / Chinellato, J A / Choi, K / Chudoba, J / Chytka, L / Clay, R W / Cobos Cerutti, A C / Colalillo, R / Coleman, A / Coluccia, M R / Conceição, R / Condorelli, A / Consolati, G / Contreras, F / Convenga, F / Covault, C E / Dasso, S / Daumiller, K / Dawson, B R / Day, J A / de Almeida, R M / de Jesús, J / de Jong, S J / De Mauro, G / de Mello Neto, J R T / De Mitri, I / de Oliveira, J / de Oliveira Franco, D / de Souza, V / De Vito, E / Debatin, J / Del Río, M / Deligny, O / Dembinski, H / Dhital, N / Di Giulio, C / Di Matteo, A / Díaz Castro, M L / Dobrigkeit, C / D'Olivo, J C / Dorosti, Q / Dos Anjos, R C / Dova, M T / Ebr, J / Engel, R / Epicoco, I / Erdmann, M / Escobar, C O / Etchegoyen, A / Falcke, H / Farmer, J / Farrar, G / Fauth, A C / Fazzini, N / Feldbusch, F / Fenu, F / Fick, B / Figueira, J M / Filipčič, A / Fodran, T / Freire, M M / Fujii, T / Fuster, A / Galea, C / Galelli, C / García, B / Garcia Vegas, A L / Gemmeke, H / Gesualdi, F / Gherghel-Lascu, A / Ghia, P L / Giaccari, U / Giammarchi, M / Giller, M / Glombitza, J / Gobbi, F / Gollan, F / Golup, G / Gómez Berisso, M / Gómez Vitale, P F / Gongora, J P / González, N / Goos, I / Góra, D / Gorgi, A / Gottowik, M / Grubb, T D / Guarino, F / Guedes, G P / Guido, E / Hahn, S / Halliday, R / Hampel, M R / Hansen, P / Harari, D / Harvey, V M / Haungs, A / Hebbeker, T / Heck, D / Hill, G C / Hojvat, C / Hörandel, J R / Horvath, P / Hrabovský, M / Huege, T / Hulsman, J / Insolia, A / Isar, P G / Johnsen, J A / Jurysek, J / Kääpä, A / Kampert, K H / Keilhauer, B / Kemp, J / Klages, H O / Kleifges, M / Kleinfeller, J / Köpke, M / Kukec Mezek, G / Lago, B L / LaHurd, D / Lang, R G / Leigui de Oliveira, M A / Lenok, V / Letessier-Selvon, A / Lhenry-Yvon, I / Lo Presti, D / Lopes, L / López, R / Lorek, R / Luce, Q / Lucero, A / Machado Payeras, A / Malacari, M / Mancarella, G / Mandat, D / Manning, B C / Manshanden, J / Mantsch, P / Marafico, S / Mariazzi, A G / Mariş, I C / Marsella, G / Martello, D / Martinez, H / Martínez Bravo, O / Mastrodicasa, M / Mathes, H J / Matthews, J / Matthiae, G / Mayotte, E / Mazur, P O / Medina-Tanco, G / Melo, D / Menshikov, A / Merenda, K-D / Michal, S / Micheletti, M I / Miramonti, L / Mockler, D / Mollerach, S / Montanet, F / Morello, C / Mostafá, M / Müller, A L / Muller, M A / Mulrey, K / Mussa, R / Muzio, M / Namasaka, W M / Nellen, L / Nguyen, P H / Niculescu-Oglinzanu, M / Niechciol, M / Nitz, D / Nosek, D / Novotny, V / Nožka, L / Nucita, A / Núñez, L A / Palatka, M / Pallotta, J / Panetta, M P / Papenbreer, P / Parente, G / Parra, A / Pech, M / Pedreira, F / Pȩkala, J / Pelayo, R / Peña-Rodriguez, J / Perez Armand, J / Perlin, M / Perrone, L / Peters, C / Petrera, S / Pierog, T / Pimenta, M / Pirronello, V / Platino, M / Pont, B / Pothast, M / Privitera, P / Prouza, M / Puyleart, A / Querchfeld, S / Rautenberg, J / Ravignani, D / Reininghaus, M / Ridky, J / Riehn, F / Risse, M / Ristori, P / Rizi, V / Rodrigues de Carvalho, W / Rodriguez Fernandez, G / Rodriguez Rojo, J / Roncoroni, M J / Roth, M / Roulet, E / Rovero, A C / Ruehl, P / Saffi, S J / Saftoiu, A / Salamida, F / Salazar, H / Salina, G / Sanabria Gomez, J D / Sánchez, F / Santos, E M / Santos, E / Sarazin, F / Sarmento, R / Sarmiento-Cano, C / Sato, R / Savina, P / Schäfer, C / Scherini, V / Schieler, H / Schimassek, M / Schimp, M / Schlüter, F / Schmidt, D / Scholten, O / Schovánek, P / Schröder, F G / Schröder, S / Schulz, A / Sciutto, S J / Scornavacche, M / Shellard, R C / Sigl, G / Silli, G / Sima, O / Šmída, R / Sommers, P / Soriano, J F / Souchard, J / Squartini, R / Stadelmaier, M / Stanca, D / Stanič, S / Stasielak, J / Stassi, P / Streich, A / Suárez-Durán, M / Sudholz, T / Suomijärvi, T / Supanitsky, A D / Šupík, J / Szadkowski, Z / Taboada, A / Tapia, A / Timmermans, C / Tkachenko, O / Tobiska, P / Todero Peixoto, C J / Tomé, B / Torralba Elipe, G / Travaini, A / Travnicek, P / Trimarelli, C / Trini, M / Tueros, M / Ulrich, R / Unger, M / Urban, M / Vaclavek, L / Vacula, M / Valdés Galicia, J F / Valiño, I / Valore, L / van Vliet, A / Varela, E / Vargas Cárdenas, B / Vásquez-Ramírez, A / Veberič, D / Ventura, C / Vergara Quispe, I D / Verzi, V / Vicha, J / Villaseñor, L / Vink, J / Vorobiov, S / Wahlberg, H / Watson, A A / Weber, M / Weindl, A / Wiencke, L / Wilczyński, H / Winchen, T / Wirtz, M / Wittkowski, D / Wundheiler, B / Yushkov, A / Zapparrata, O / Zas, E / Zavrtanik, D / Zavrtanik, M / Zehrer, L / Zepeda, A / Ziolkowski, M / Zuccarello, F

    Physical review letters

    2020  Volume 125, Issue 12, Page(s) 121106

    Abstract: We report a measurement of the energy spectrum of cosmic rays above 2.5×10^{18}  eV based on 215 030 events. New results are presented: at about 1.3×10^{19}  eV, the spectral index changes from 2.51±0.03(stat)±0.05(syst) to 3.05±0.05(stat)±0.10(syst), ... ...

    Abstract We report a measurement of the energy spectrum of cosmic rays above 2.5×10^{18}  eV based on 215 030 events. New results are presented: at about 1.3×10^{19}  eV, the spectral index changes from 2.51±0.03(stat)±0.05(syst) to 3.05±0.05(stat)±0.10(syst), evolving to 5.1±0.3(stat)±0.1(syst) beyond 5×10^{19}  eV, while no significant dependence of spectral features on the declination is seen in the accessible range. These features of the spectrum can be reproduced in models with energy-dependent mass composition. The energy density in cosmic rays above 5×10^{18}  eV is [5.66±0.03(stat)±1.40(syst)]×10^{53}  erg Mpc^{-3}.
    Language English
    Publishing date 2020-10-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.125.121106
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Book ; Online: The FRAM robotic telescope for atmospheric monitoring at the Pierre Auger Observatory

    The Pierre Auger Collaboration / Aab, A. / Abreu, P. / Aglietta, M. / Albury, J. M. / Allekotte, I. / Almela, A. / Alvarez-Muñiz, J. / Batista, R. Alves / Anastasi, G. A. / Anchordoqui, L. / Andrada, B. / Andringa, S. / Aramo, C. / Ferreira, P. R. Araújo / Velázquez, J. C. Arteaga / Asorey, H. / Assis, P. / Avila, G. /
    Badescu, A. M. / Bakalova, A. / Balaceanu, A. / Barbato, F. / Luz, R. J. Barreira / Becker, K. H. / Bellido, J. A. / Berat, C. / Bertaina, M. E. / Bertou, X. / Biermann, P. L. / Bister, T. / Biteau, J. / Blazek, J. / Bleve, C. / Boháčová, M. / Boncioli, D. / Bonifazi, C. / Arbeletche, L. Bonneau / Borodai, N. / Botti, A. M. / Brack, J. / Bretz, T. / Orchera, P. G. Brichetto / Briechle, F. L. / Buchholz, P. / Bueno, A. / Buitink, S. / Buscemi, M. / Caballero-Mora, K. S. / Caccianiga, L. / Canfora, F. / Caracas, I. / Carceller, J. M. / Caruso, R. / Castellina, A. / Catalani, F. / Cataldi, G. / Cazon, L. / Cerda, M. / Chinellato, J. A. / Choi, K. / Chudoba, J. / Chytka, L. / Clay, R. W. / Cerutti, A. C. Cobos / Colalillo, R. / Coleman, A. / Coluccia, M. R. / Conceição, R. / Condorelli, A. / Consolati, G. / Contreras, F. / Convenga, F. / Santos, D. Correia dos / Covault, C. E. / Dasso, S. / Daumiller, K. / Dawson, B. R. / Day, J. A. / de Almeida, R. M. / de Jesús, J. / de Jong, S. J. / De Mauro, G. / Neto, J. R. T. de Mello / De Mitri, I. / de Oliveira, J. / Franco, D. de Oliveira / de Palma, F. / de Souza, V. / De Vito, E. / del Río, M. / Deligny, O. / Di Matteo, A. / Dobrigkeit, C. / D'Olivo, J. C. / Anjos, R. C. dos / Dova, M. T. / Ebr, J. / Engel, R. / Epicoco, I. / Erdmann, M. / Escobar, C. O. / Etchegoyen, A. / Falcke, H. / Farmer, J. / Farrar, G. / Fauth, A. C. / Fazzini, N. / Feldbusch, F. / Fenu, F. / Fick, B. / Figueira, J. M. / Filipčič, A. / Fodran, T. / Freire, M. M. / Fujii, T. / Fuster, A. / Galea, C. / Galelli, C. / García, B. / Vegas, A. L. Garcia / Gemmeke, H. / Gesualdi, F. / Gherghel-Lascu, A. / Ghia, P. L. / Giaccari, U. / Giammarchi, M. / Giller, M. / Glombitza, J. / Gobbi, F. / Gollan, F. / Golup, G. / Berisso, M. Gómez / Vitale, P. F. Gómez / Gongora, J. P. / González, J. M. / González, N. / Goos, I. / Góra, D. / Gorgi, A. / Gottowik, M. / Grubb, T. D. / Guarino, F. / Guedes, G. P. / Guido, E. / Hahn, S. / Hamal, P. / Hampel, M. R. / Hansen, P. / Harari, D. / Harvey, V. M. / Haungs, A. / Hebbeker, T. / Heck, D. / Hill, G. C. / Hojvat, C. / Hörandel, J. R. / Horvath, P. / Hrabovský, M. / Huege, T. / Hulsman, J. / Insolia, A. / Isar, P. G. / Janecek, P. / Johnsen, J. A. / Jurysek, J. / Kääpä, A. / Kampert, K. H. / Keilhauer, B. / Kemp, J. / Klages, H. O. / Kleifges, M. / Kleinfeller, J. / Köpke, M. / Kunka, N. / Lago, B. L. / Lang, R. G. / Langner, N. / de Oliveira, M. A. Leigui / Lenok, V. / Letessier-Selvon, A. / Lhenry-Yvon, I. / Presti, D. Lo / Lopes, L. / López, R. / Lu, L. / Luce, Q. / Lucero, A. / Lundquist, J. P. / Payeras, A. Machado / Mancarella, G. / Mandat, D. / Manning, B. C. / Manshanden, J. / Mantsch, P. / Marafico, S. / Mariazzi, A. G. / Mariş, I. C. / Marsella, G. / Martello, D. / Martinez, H. / Bravo, O. Martínez / Mastrodicasa, M. / Mathes, H. J. / Matthews, J. / Matthiae, G. / Mayotte, E. / Mazur, P. O. / Medina-Tanco, G. / Melo, D. / Menshikov, A. / Merenda, K. -D. / Michal, S. / Micheletti, M. I. / Miramonti, L. / Mollerach, S. / Montanet, F. / Morello, C. / Mostafá, M. / Müller, A. L. / Muller, M. A. / Mulrey, K. / Mussa, R. / Muzio, M. / Namasaka, W. M. / Nasr-Esfahani, A. / Nellen, L. / Niculescu-Oglinzanu, M. / Niechciol, M. / Nitz, D. / Nosek, D. / Novotny, V. / Nožka, L. / Nucita, A / Núñez, L. A. / Palatka, M. / Pallotta, J. / Papenbreer, P. / Parente, G. / Parra, A. / Pech, M. / Pedreira, F. / Pękala, J. / Pelayo, R. / Peña-Rodriguez, J. / Martins, E. E. Pereira / Armand, J. Perez / Bertolli, C. Pérez / Perlin, M. / Perrone, L. / Petrera, S. / Pierog, T. / Pimenta, M. / Pirronello, V. / Platino, M. / Pont, B. / Pothast, M. / Privitera, P. / Prouza, M. / Puyleart, A. / Querchfeld, S. / Rautenberg, J. / Ravignani, D. / Reininghaus, M. / Ridky, J. / Riehn, F. / Risse, M. / Rizi, V. / de Carvalho, W. Rodrigues / Rojo, J. Rodriguez / Roncoroni, M. J. / Roth, M. / Roulet, E. / Rovero, A. C. / Ruehl, P. / Saffi, S. J. / Saftoiu, A. / Salamida, F. / Salazar, H. / Salina, G. / Gomez, J. D. Sanabria / Sánchez, F. / Santos, E. M. / Santos, E. / Sarazin, F. / Sarmento, R. / Sarmiento-Cano, C. / Sato, R. / Savina, P. / Schäfer, C. M. / Scherini, V. / Schieler, H. / Schimassek, M. / Schimp, M. / Schlüter, F. / Schmidt, D. / Scholten, O. / Schovánek, P. / Schröder, F. G. / Schröder, S. / Schulte, J. / Sciutto, S. J. / Scornavacche, M. / Segreto, A. / Sehgal, S. / Shellard, R. C. / Sigl, G. / Silli, G. / Sima, O. / Šmída, R. / Sommers, P. / Soriano, J. F. / Souchard, J. / Squartini, R. / Stadelmaier, M. / Stanca, D. / Stanič, S. / Stasielak, J. / Stassi, P. / Streich, A. / Suárez-Durán, M. / Sudholz, T. / Suomijärvi, T. / Supanitsky, A. D. / Šupík, J. / Szadkowski, Z. / Taboada, A. / Tapia, A. / Taricco, C. / Timmermans, C. / Tkachenko, O. / Tobiska, P. / Peixoto, C. J. Todero / Tomé, B. / Travaini, A. / Travnicek, P. / Trimarelli, C. / Trini, M. / Tueros, M. / Ulrich, R. / Unger, M. / Vaclavek, L. / Vacula, M. / Galicia, J. F. Valdés / Valore, L. / Varela, E. / C., V. Varma K. / Vásquez-Ramírez, A. / Veberič, D. / Ventura, C. / Quispe, I. D. Vergara / Verzi, V. / Vicha, J. / Vink, J. / Vorobiov, S. / Wahlberg, H. / Watanabe, C. / Watson, A. A. / Weber, M. / Weindl, A. / Wiencke, L. / Wilczyński, H. / Winchen, T. / Wirtz, M. / Wittkowski, D. / Wundheiler, B. / Yushkov, A. / Zapparrata, O. / Zas, E. / Zavrtanik, D. / Zavrtanik, M. / Zehrer, L. / Zepeda, A. / Cunniffe, R. / Eliášek, J. / Ebrová, I. / Jelínek, M. / Karpov, S. / Kubánek, P. / Mašek, M.

    2021  

    Abstract: FRAM (F/Photometric Robotic Atmospheric Monitor) is a robotic telescope operated at the Pierre Auger Observatory in Argentina for the purposes of atmospheric monitoring using stellar photometry. As a passive system which does not produce any light that ... ...

    Abstract FRAM (F/Photometric Robotic Atmospheric Monitor) is a robotic telescope operated at the Pierre Auger Observatory in Argentina for the purposes of atmospheric monitoring using stellar photometry. As a passive system which does not produce any light that could interfere with the observations of the fluorescence telescopes of the observatory, it complements the active monitoring systems that use lasers. We discuss the applications of stellar photometry for atmospheric monitoring at optical observatories in general and the particular modes of operation employed by the Auger FRAM. We describe in detail the technical aspects of FRAM, the hardware and software requirements for a successful operation of a robotic telescope for such a purpose and their implementation within the FRAM system.

    Comment: Published version, 27 pages, 8 figures
    Keywords Astrophysics - Instrumentation and Methods for Astrophysics ; Astrophysics - High Energy Astrophysical Phenomena
    Subject code 629
    Publishing date 2021-01-27
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: Testing Hadronic Interactions at Ultrahigh Energies with Air Showers Measured by the Pierre Auger Observatory.

    Aab, A / Abreu, P / Aglietta, M / Ahn, E J / Al Samarai, I / Albuquerque, I F M / Allekotte, I / Allen, J D / Allison, P / Almela, A / Alvarez Castillo, J / Alvarez-Muñiz, J / Ambrosio, M / Anastasi, G A / Anchordoqui, L / Andrada, B / Andringa, S / Aramo, C / Arqueros, F /
    Arsene, N / Asorey, H / Assis, P / Aublin, J / Avila, G / Badescu, A M / Baus, C / Beatty, J J / Becker, K H / Bellido, J A / Berat, C / Bertaina, M E / Bertou, X / Biermann, P L / Billoir, P / Biteau, J / Blaess, S G / Blanco, A / Blazek, J / Bleve, C / Blümer, H / Boháčová, M / Boncioli, D / Bonifazi, C / Borodai, N / Botti, A M / Brack, J / Brancus, I / Bretz, T / Bridgeman, A / Briechle, F L / Buchholz, P / Bueno, A / Buitink, S / Buscemi, M / Caballero-Mora, K S / Caccianiga, B / Caccianiga, L / Cancio, A / Canfora, F / Caramete, L / Caruso, R / Castellina, A / Cataldi, G / Cazon, L / Cester, R / Chavez, A G / Chiavassa, A / Chinellato, J A / Chirinos Diaz, J C / Chudoba, J / Clay, R W / Colalillo, R / Coleman, A / Collica, L / Coluccia, M R / Conceição, R / Contreras, F / Cooper, M J / Coutu, S / Covault, C E / Cronin, J / Dallier, R / D'Amico, S / Daniel, B / Dasso, S / Daumiller, K / Dawson, B R / de Almeida, R M / de Jong, S J / De Mauro, G / de Mello Neto, J R T / De Mitri, I / de Oliveira, J / de Souza, V / Debatin, J / Del Peral, L / Deligny, O / Dhital, N / Di Giulio, C / Di Matteo, A / Díaz Castro, M L / Diogo, F / Dobrigkeit, C / D'Olivo, J C / Dorofeev, A / Dos Anjos, R C / Dova, M T / Dundovic, A / Ebr, J / Engel, R / Erdmann, M / Erfani, M / Escobar, C O / Espadanal, J / Etchegoyen, A / Falcke, H / Fang, K / Farrar, G R / Fauth, A C / Fazzini, N / Ferguson, A P / Fick, B / Figueira, J M / Filevich, A / Filipčič, A / Fratu, O / Freire, M M / Fujii, T / Fuster, A / Gallo, F / García, B / Garcia-Pinto, D / Gate, F / Gemmeke, H / Gherghel-Lascu, A / Ghia, P L / Giaccari, U / Giammarchi, M / Giller, M / Głas, D / Glaser, C / Glass, H / Golup, G / Gómez Berisso, M / Gómez Vitale, P F / González, N / Gookin, B / Gordon, J / Gorgi, A / Gorham, P / Gouffon, P / Griffith, N / Grillo, A F / Grubb, T D / Guarino, F / Guedes, G P / Hampel, M R / Hansen, P / Harari, D / Harrison, T A / Harton, J L / Hasankiadeh, Q / Haungs, A / Hebbeker, T / Heck, D / Heimann, P / Herve, A E / Hill, G C / Hojvat, C / Hollon, N / Holt, E / Homola, P / Hörandel, J R / Horvath, P / Hrabovský, M / Huege, T / Hulsman, J / Insolia, A / Isar, P G / Jandt, I / Jansen, S / Jarne, C / Johnsen, J A / Josebachuili, M / Kääpä, A / Kambeitz, O / Kampert, K H / Kasper, P / Katkov, I / Keilhauer, B / Kemp, E / Kieckhafer, R M / Klages, H O / Kleifges, M / Kleinfeller, J / Krause, R / Krohm, N / Kuempel, D / Kukec Mezek, G / Kunka, N / Kuotb Awad, A / LaHurd, D / Latronico, L / Lauscher, M / Lautridou, P / Lebrun, P / Legumina, R / Leigui de Oliveira, M A / Letessier-Selvon, A / Lhenry-Yvon, I / Link, K / Lopes, L / López, R / López Casado, A / Lucero, A / Malacari, M / Mallamaci, M / Mandat, D / Mantsch, P / Mariazzi, A G / Marin, V / Mariş, I C / Marsella, G / Martello, D / Martinez, H / Martínez Bravo, O / Masías Meza, J J / Mathes, H J / Mathys, S / Matthews, J / Matthews, J A J / Matthiae, G / Maurizio, D / Mayotte, E / Mazur, P O / Medina, C / Medina-Tanco, G / Mello, V B B / Melo, D / Menshikov, A / Messina, S / Micheletti, M I / Middendorf, L / Minaya, I A / Miramonti, L / Mitrica, B / Molina-Bueno, L / Mollerach, S / Montanet, F / Morello, C / Mostafá, M / Moura, C A / Müller, G / Muller, M A / Müller, S / Naranjo, I / Navas, S / Necesal, P / Nellen, L / Nelles, A / Neuser, J / Nguyen, P H / Niculescu-Oglinzanu, M / Niechciol, M / Niemietz, L / Niggemann, T / Nitz, D / Nosek, D / Novotny, V / Nožka, H / Núñez, L A / Ochilo, L / Oikonomou, F / Olinto, A / Pakk Selmi-Dei, D / Palatka, M / Pallotta, J / Papenbreer, P / Parente, G / Parra, A / Paul, T / Pech, M / Pedreira, F / Pękala, J / Pelayo, R / Peña-Rodriguez, J / Pepe, I M / Pereira, L A S / Perrone, L / Petermann, E / Peters, C / Petrera, S / Phuntsok, J / Piegaia, R / Pierog, T / Pieroni, P / Pimenta, M / Pirronello, V / Platino, M / Plum, M / Porowski, C / Prado, R R / Privitera, P / Prouza, M / Quel, E J / Querchfeld, S / Quinn, S / Rautenberg, J / Ravel, O / Ravignani, D / Revenu, B / Ridky, J / Risse, M / Ristori, P / Rizi, V / Rodrigues de Carvalho, W / Rodriguez Rojo, J / Rodríguez-Frías, M D / Rogozin, D / Rosado, J / Roth, M / Roulet, E / Rovero, A C / Saffi, S J / Saftoiu, A / Salazar, H / Saleh, A / Salesa Greus, F / Salina, G / Sanabria Gomez, J D / Sánchez, F / Sanchez-Lucas, P / Santos, E M / Santos, E / Sarazin, F / Sarkar, B / Sarmento, R / Sarmiento-Cano, C / Sato, R / Scarso, C / Schauer, M / Scherini, V / Schieler, H / Schmidt, D / Scholten, O / Schoorlemmer, H / Schovánek, P / Schröder, F G / Schulz, A / Schulz, J / Schumacher, J / Sciutto, S J / Segreto, A / Settimo, M / Shadkam, A / Shellard, R C / Sigl, G / Sima, O / Śmiałkowski, A / Šmída, R / Snow, G R / Sommers, P / Sonntag, S / Sorokin, J / Squartini, R / Stanca, D / Stanič, S / Stapleton, J / Stasielak, J / Strafella, F / Stutz, A / Suarez, F / Suarez Durán, M / Sudholz, T / Suomijärvi, T / Supanitsky, A D / Sutherland, M S / Swain, J / Szadkowski, Z / Taborda, O A / Tapia, A / Tepe, A / Theodoro, V M / Timmermans, C / Todero Peixoto, C J / Tomankova, L / Tomé, B / Tonachini, A / Torralba Elipe, G / Torres Machado, D / Travnicek, P / Trini, M / Ulrich, R / Unger, M / Urban, M / Valbuena-Delgado, A / Valdés Galicia, J F / Valiño, I / Valore, L / van Aar, G / van Bodegom, P / van den Berg, A M / van Vliet, A / Varela, E / Vargas Cárdenas, B / Varner, G / Vázquez, J R / Vázquez, R A / Veberič, D / Verzi, V / Vicha, J / Videla, M / Villaseñor, L / Vorobiov, S / Wahlberg, H / Wainberg, O / Walz, D / Watson, A A / Weber, M / Weindl, A / Wiencke, L / Wilczyński, H / Winchen, T / Wittkowski, D / Wundheiler, B / Wykes, S / Yang, L / Yapici, T / Yelos, D / Zas, E / Zavrtanik, D / Zavrtanik, M / Zepeda, A / Zimmermann, B / Ziolkowski, M / Zong, Z / Zuccarello, F

    Physical review letters

    2016  Volume 117, Issue 19, Page(s) 192001

    Abstract: Ultrahigh energy cosmic ray air showers probe particle physics at energies beyond the reach of accelerators. Here we introduce a new method to test hadronic interaction models without relying on the absolute energy calibration, and apply it to events ... ...

    Abstract Ultrahigh energy cosmic ray air showers probe particle physics at energies beyond the reach of accelerators. Here we introduce a new method to test hadronic interaction models without relying on the absolute energy calibration, and apply it to events with primary energy 6-16 EeV (E_{CM}=110-170  TeV), whose longitudinal development and lateral distribution were simultaneously measured by the Pierre Auger Observatory. The average hadronic shower is 1.33±0.16 (1.61±0.21) times larger than predicted using the leading LHC-tuned models EPOS-LHC (QGSJetII-04), with a corresponding excess of muons.
    Language English
    Publishing date 2016-11-04
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.117.192001
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  10. Article ; Online: Measurement of the Radiation Energy in the Radio Signal of Extensive Air Showers as a Universal Estimator of Cosmic-Ray Energy.

    Aab, A / Abreu, P / Aglietta, M / Ahn, E J / Al Samarai, I / Albuquerque, I F M / Allekotte, I / Allison, P / Almela, A / Alvarez Castillo, J / Alvarez-Muñiz, J / Alves Batista, R / Ambrosio, M / Aminaei, A / Anastasi, G A / Anchordoqui, L / Andringa, S / Aramo, C / Arqueros, F /
    Arsene, N / Asorey, H / Assis, P / Aublin, J / Avila, G / Awal, N / Badescu, A M / Baus, C / Beatty, J J / Becker, K H / Bellido, J A / Berat, C / Bertaina, M E / Bertou, X / Biermann, P L / Billoir, P / Blaess, S G / Blanco, A / Blanco, M / Blazek, J / Bleve, C / Blümer, H / Boháčová, M / Boncioli, D / Bonifazi, C / Borodai, N / Brack, J / Brancus, I / Bretz, T / Bridgeman, A / Brogueira, P / Buchholz, P / Bueno, A / Buitink, S / Buscemi, M / Caballero-Mora, K S / Caccianiga, B / Caccianiga, L / Candusso, M / Caramete, L / Caruso, R / Castellina, A / Cataldi, G / Cazon, L / Cester, R / Chavez, A G / Chiavassa, A / Chinellato, J A / Chudoba, J / Cilmo, M / Clay, R W / Cocciolo, G / Colalillo, R / Coleman, A / Collica, L / Coluccia, M R / Conceição, R / Contreras, F / Cooper, M J / Cordier, A / Coutu, S / Covault, C E / Cronin, J / Dallier, R / Daniel, B / Dasso, S / Daumiller, K / Dawson, B R / de Almeida, R M / de Jong, S J / De Mauro, G / de Mello Neto, J R T / De Mitri, I / de Oliveira, J / de Souza, V / Del Peral, L / Deligny, O / Dhital, N / Di Giulio, C / Di Matteo, A / Diaz, J C / Díaz Castro, M L / Diogo, F / Dobrigkeit, C / Docters, W / D'Olivo, J C / Dorofeev, A / Dorosti Hasankiadeh, Q / Dos Anjos, R C / Dova, M T / Ebr, J / Engel, R / Erdmann, M / Erfani, M / Escobar, C O / Espadanal, J / Etchegoyen, A / Falcke, H / Fang, K / Farrar, G / Fauth, A C / Fazzini, N / Ferguson, A P / Fick, B / Figueira, J M / Filevich, A / Filipčič, A / Fratu, O / Freire, M M / Fujii, T / García, B / Garcia-Gamez, D / Garcia-Pinto, D / Gate, F / Gemmeke, H / Gherghel-Lascu, A / Ghia, P L / Giaccari, U / Giammarchi, M / Giller, M / Głas, D / Glaser, C / Glass, H / Golup, G / Gómez Berisso, M / Gómez Vitale, P F / González, N / Gookin, B / Gordon, J / Gorgi, A / Gorham, P / Gouffon, P / Griffith, N / Grillo, A F / Grubb, T D / Guarino, F / Guedes, G P / Hampel, M R / Hansen, P / Harari, D / Harrison, T A / Hartmann, S / Harton, J L / Haungs, A / Hebbeker, T / Heck, D / Heimann, P / Herve, A E / Hill, G C / Hojvat, C / Hollon, N / Holt, E / Homola, P / Hörandel, J R / Horvath, P / Hrabovský, M / Huber, D / Huege, T / Insolia, A / Isar, P G / Jandt, I / Jansen, S / Jarne, C / Johnsen, J A / Josebachuili, M / Kääpä, A / Kambeitz, O / Kampert, K H / Kasper, P / Katkov, I / Keilhauer, B / Kemp, E / Kieckhafer, R M / Klages, H O / Kleifges, M / Kleinfeller, J / Krause, R / Krohm, N / Kuempel, D / Kukec Mezek, G / Kunka, N / Kuotb Awad, A W / LaHurd, D / Latronico, L / Lauer, R / Lauscher, M / Lautridou, P / Le Coz, S / Lebrun, D / Lebrun, P / Leigui de Oliveira, M A / Letessier-Selvon, A / Lhenry-Yvon, I / Link, K / Lopes, L / López, R / López Casado, A / Louedec, K / Lucero, A / Malacari, M / Mallamaci, M / Maller, J / Mandat, D / Mantsch, P / Mariazzi, A G / Marin, V / Mariş, I C / Marsella, G / Martello, D / Martinez, H / Martínez Bravo, O / Martraire, D / Masías Meza, J J / Mathes, H J / Mathys, S / Matthews, J / Matthews, J A J / Matthiae, G / Maurizio, D / Mayotte, E / Mazur, P O / Medina, C / Medina-Tanco, G / Meissner, R / Mello, V B B / Melo, D / Menshikov, A / Messina, S / Micheletti, M I / Middendorf, L / Minaya, I A / Miramonti, L / Mitrica, B / Molina-Bueno, L / Mollerach, S / Montanet, F / Morello, C / Mostafá, M / Moura, C A / Muller, M A / Müller, G / Müller, S / Navas, S / Necesal, P / Nellen, L / Nelles, A / Neuser, J / Nguyen, P H / Niculescu-Oglinzanu, M / Niechciol, M / Niemietz, L / Niggemann, T / Nitz, D / Nosek, D / Novotny, V / Nožka, L / Núñez, L A / Ochilo, L / Oikonomou, F / Olinto, A / Pacheco, N / Pakk Selmi-Dei, D / Palatka, M / Pallotta, J / Papenbreer, P / Parente, G / Parra, A / Paul, T / Pech, M / Pȩkala, J / Pelayo, R / Pepe, I M / Perrone, L / Petermann, E / Peters, C / Petrera, S / Petrov, Y / Phuntsok, J / Piegaia, R / Pierog, T / Pieroni, P / Pimenta, M / Pirronello, V / Platino, M / Plum, M / Porcelli, A / Porowski, C / Prado, R R / Privitera, P / Prouza, M / Quel, E J / Querchfeld, S / Quinn, S / Rautenberg, J / Ravel, O / Ravignani, D / Reinert, D / Revenu, B / Ridky, J / Risse, M / Ristori, P / Rizi, V / Rodrigues de Carvalho, W / Rodriguez Rojo, J / Rodríguez-Frías, M D / Rogozin, D / Rosado, J / Roth, M / Roulet, E / Rovero, A C / Saffi, S J / Saftoiu, A / Salazar, H / Saleh, A / Salesa Greus, F / Salina, G / Sanabria Gomez, J D / Sánchez, F / Sanchez-Lucas, P / Santos, E / Santos, E M / Sarazin, F / Sarkar, B / Sarmento, R / Sarmiento-Cano, C / Sato, R / Scarso, C / Schauer, M / Scherini, V / Schieler, H / Schmidt, D / Scholten, O / Schoorlemmer, H / Schovánek, P / Schröder, F G / Schulz, A / Schulz, J / Schumacher, J / Sciutto, S J / Segreto, A / Settimo, M / Shadkam, A / Shellard, R C / Sigl, G / Sima, O / Śmiałkowski, A / Šmída, R / Snow, G R / Sommers, P / Sonntag, S / Sorokin, J / Squartini, R / Srivastava, Y N / Stanca, D / Stanič, S / Stapleton, J / Stasielak, J / Stephan, M / Stutz, A / Suarez, F / Suarez Durán, M / Suomijärvi, T / Supanitsky, A D / Sutherland, M S / Swain, J / Szadkowski, Z / Taborda, O A / Tapia, A / Tepe, A / Theodoro, V M / Timmermans, C / Todero Peixoto, C J / Toma, G / Tomankova, L / Tomé, B / Tonachini, A / Torralba Elipe, G / Torres Machado, D / Travnicek, P / Trini, M / Ulrich, R / Unger, M / Urban, M / Valdés Galicia, J F / Valiño, I / Valore, L / van Aar, G / van Bodegom, P / van den Berg, A M / van Velzen, S / van Vliet, A / Varela, E / Vargas Cárdenas, B / Varner, G / Vasquez, R / Vázquez, J R / Vázquez, R A / Veberič, D / Verzi, V / Vicha, J / Videla, M / Villaseñor, L / Vlcek, B / Vorobiov, S / Wahlberg, H / Wainberg, O / Walz, D / Watson, A A / Weber, M / Weidenhaupt, K / Weindl, A / Welling, C / Werner, F / Widom, A / Wiencke, L / Wilczyński, H / Winchen, T / Wittkowski, D / Wundheiler, B / Wykes, S / Yang, L / Yapici, T / Yushkov, A / Zas, E / Zavrtanik, D / Zavrtanik, M / Zepeda, A / Zimmermann, B / Ziolkowski, M / Zuccarello, F

    Physical review letters

    2016  Volume 116, Issue 24, Page(s) 241101

    Abstract: We measure the energy emitted by extensive air showers in the form of radio emission in the frequency range from 30 to 80 MHz. Exploiting the accurate energy scale of the Pierre Auger Observatory, we obtain a radiation energy of 15.8±0.7(stat)±6.7(syst)   ...

    Abstract We measure the energy emitted by extensive air showers in the form of radio emission in the frequency range from 30 to 80 MHz. Exploiting the accurate energy scale of the Pierre Auger Observatory, we obtain a radiation energy of 15.8±0.7(stat)±6.7(syst)  MeV for cosmic rays with an energy of 1 EeV arriving perpendicularly to a geomagnetic field of 0.24 G, scaling quadratically with the cosmic-ray energy. A comparison with predictions from state-of-the-art first-principles calculations shows agreement with our measurement. The radiation energy provides direct access to the calorimetric energy in the electromagnetic cascade of extensive air showers. Comparison with our result thus allows the direct calibration of any cosmic-ray radio detector against the well-established energy scale of the Pierre Auger Observatory.
    Language English
    Publishing date 2016-06-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.116.241101
    Database MEDical Literature Analysis and Retrieval System OnLINE

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