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  1. 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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  2. 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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  3. 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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  4. 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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  5. 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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