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  1. Book ; Online: Euclid

    Pöntinen, M. / Granvik, M. / Nucita, A. A. / Conversi, L. / Altieri, B. / Carry, B. / O'Riordan, C. M. / Scott, D. / Aghanim, N. / Amara, A. / Amendola, L. / Auricchio, N. / Baldi, M. / Bonino, D. / Branchini, E. / Brescia, M. / Camera, S. / Capobianco, V. / Carbone, C. /
    Carretero, J. / Castellano, M. / Cavuoti, S. / Cimatti, A. / Cledassou, R. / Congedo, G. / Copin, Y. / Corcione, L. / Courbin, F. / Cropper, M. / Da Silva, A. / Degaudenzi, H. / Dinis, J. / Dubath, F. / Dupac, X. / Dusini, S. / Farrens, S. / Ferriol, S. / Frailis, M. / Franceschi, E. / Fumana, M. / Galeotta, S. / Garilli, B. / Gillard, W. / Gillis, B. / Giocoli, C. / Grazian, A. / Haugan, S. V. H. / Holmes, W. / Hormuth, F. / Hornstrup, A. / Jahnke, K. / Kümmel, M. / Kermiche, S. / Kiessling, A. / Kitching, T. / Kohley, R. / Kunz, M. / Kurki-Suonio, H. / Ligori, S. / Lilje, P. B. / Lloro, I. / Maiorano, E. / Mansutti, O. / Marggraf, O. / Markovic, K. / Marulli, F. / Massey, R. / Medinaceli, E. / Mei, S. / Melchior, M. / Mellier, Y. / Meneghetti, M. / Meylan, G. / Moresco, M. / Moscardini, L. / Munari, E. / Niemi, S. -M. / Nutma, T. / Padilla, C. / Paltani, S. / Pasian, F. / Pedersen, K. / Pettorino, V. / Pires, S. / Polenta, G. / Poncet, M. / Raison, F. / Renzi, A. / Rhodes, J. / Riccio, G. / Romelli, E. / Roncarelli, M. / Rossetti, E. / Saglia, R. / Sapone, D. / Sartoris, B. / Schneider, P. / Secroun, A. / Seidel, G. / Serrano, S. / Sirignano, C. / Sirri, G. / Stanco, L. / Tallada-Crespí, P. / Taylor, A. N. / Tereno, I. / Toledo-Moreo, R. / Torradeflot, F. / Tutusaus, I. / Valenziano, L. / Vassallo, T. / Kleijn, G. Verdoes / Wang, Y. / Weller, J. / Zamorani, G. / Zoubian, J. / Scottez, V.

    Identification of asteroid streaks in simulated images using deep learning

    2023  

    Abstract: Up to 150000 asteroids will be visible in the images of the ESA Euclid space telescope, and the instruments of Euclid offer multiband visual to near-infrared photometry and slitless spectra of these objects. Most asteroids will appear as streaks in the ... ...

    Abstract Up to 150000 asteroids will be visible in the images of the ESA Euclid space telescope, and the instruments of Euclid offer multiband visual to near-infrared photometry and slitless spectra of these objects. Most asteroids will appear as streaks in the images. Due to the large number of images and asteroids, automated detection methods are needed. A non-machine-learning approach based on the StreakDet software was previously tested, but the results were not optimal for short and/or faint streaks. We set out to improve the capability to detect asteroid streaks in Euclid images by using deep learning. We built, trained, and tested a three-step machine-learning pipeline with simulated Euclid images. First, a convolutional neural network (CNN) detected streaks and their coordinates in full images, aiming to maximize the completeness (recall) of detections. Then, a recurrent neural network (RNN) merged snippets of long streaks detected in several parts by the CNN. Lastly, gradient-boosted trees (XGBoost) linked detected streaks between different Euclid exposures to reduce the number of false positives and improve the purity (precision) of the sample. The deep-learning pipeline surpasses the completeness and reaches a similar level of purity of a non-machine-learning pipeline based on the StreakDet software. Additionally, the deep-learning pipeline can detect asteroids 0.25-0.5 magnitudes fainter than StreakDet. The deep-learning pipeline could result in a 50% increase in the number of detected asteroids compared to the StreakDet software. There is still scope for further refinement, particularly in improving the accuracy of streak coordinates and enhancing the completeness of the final stage of the pipeline, which involves linking detections across multiple exposures.

    Comment: 18 pages, 11 figures
    Keywords Astrophysics - Earth and Planetary Astrophysics ; Astrophysics - Instrumentation and Methods for Astrophysics ; Computer Science - Machine Learning
    Subject code 006
    Publishing date 2023-10-05
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: OPERA tau neutrino charged current interactions.

    Agafonova, N / Alexandrov, A / Anokhina, A / Aoki, S / Ariga, A / Ariga, T / Bertolin, A / Bozza, C / Brugnera, R / Buonaura, A / Buontempo, S / Chernyavskiy, M / Chukanov, A / Consiglio, L / D'Ambrosio, N / De Lellis, G / De Serio, M / Del Amo Sanchez, P / Di Crescenzo, A /
    Di Ferdinando, D / Di Marco, N / Dmitrievsky, S / Dracos, M / Duchesneau, D / Dusini, S / Dzhatdoev, T / Ebert, J / Ereditato, A / Fini, R A / Fornari, F / Fukuda, T / Galati, G / Garfagnini, A / Gentile, V / Goldberg, J / Gorbunov, S / Gornushkin, Y / Grella, G / Guler, A M / Gustavino, C / Hagner, C / Hara, T / Hayakawa, T / Hollnagel, A / Ishiguro, K / Iuliano, A / Jakovčić, K / Jollet, C / Kamiscioglu, C / Kamiscioglu, M / Kim, S H / Kitagawa, N / Kliček, B / Kodama, K / Komatsu, M / Kose, U / Kreslo, I / Laudisio, F / Lauria, A / Lavasa, A / Longhin, A / Loverre, P / Malgin, A / Mandrioli, G / Matsuo, T / Matveev, V / Mauri, N / Medinaceli, E / Meregaglia, A / Mikado, S / Miyanishi, M / Mizutani, F / Monacelli, P / Montesi, M C / Morishima, K / Muciaccia, M T / Naganawa, N / Naka, T / Nakamura, M / Nakano, T / Niwa, K / Ogawa, S / Okateva, N / Ozaki, K / Paoloni, A / Park, B D / Pasqualini, L / Pastore, A / Patrizii, L / Pessard, H / Podgrudkov, D / Polukhina, N / Pozzato, M / Pupilli, F / Roda, M / Roganova, T / Rokujo, H / Rosa, G / Ryazhskaya, O / Sato, O / Shakirianova, I / Schembri, A / Shchedrina, T / Shibayama, E / Shibuya, H / Shiraishi, T / Šimko, T / Simone, S / Sirignano, C / Sirri, G / Sotnikov, A / Spinetti, M / Stanco, L / Starkov, N / Stellacci, S M / Stipčević, M / Strolin, P / Takahashi, S / Tenti, M / Terranova, F / Tioukov, V / Tsanaktsidis, I / Tufanli, S / Ustyuzhanin, A / Vasina, S / Vidal García, M / Vilain, P / Voevodina, E / Votano, L / Vuilleumier, J L / Wilquet, G / Yoon, C S

    Scientific data

    2021  Volume 8, Issue 1, Page(s) 218

    Abstract: The OPERA experiment was designed to discover the ... ...

    Abstract The OPERA experiment was designed to discover the v
    Language English
    Publishing date 2021-08-12
    Publishing country England
    Document type Journal Article
    ZDB-ID 2775191-0
    ISSN 2052-4463 ; 2052-4463
    ISSN (online) 2052-4463
    ISSN 2052-4463
    DOI 10.1038/s41597-021-00991-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Final Results of the OPERA Experiment on ν_{τ} Appearance in the CNGS Neutrino Beam.

    Agafonova, N / Alexandrov, A / Anokhina, A / Aoki, S / Ariga, A / Ariga, T / Bertolin, A / Bozza, C / Brugnera, R / Buonaura, A / Buontempo, S / Chernyavskiy, M / Chukanov, A / Consiglio, L / D'Ambrosio, N / De Lellis, G / De Serio, M / Del Amo Sanchez, P / Di Crescenzo, A /
    Di Ferdinando, D / Di Marco, N / Dmitrievsky, S / Dracos, M / Duchesneau, D / Dusini, S / Dzhatdoev, T / Ebert, J / Ereditato, A / Favier, J / Fini, R A / Fornari, F / Fukuda, T / Galati, G / Garfagnini, A / Gentile, V / Goldberg, J / Gorbunov, S / Gornushkin, Y / Grella, G / Guler, A M / Gustavino, C / Hagner, C / Hara, T / Hayakawa, T / Hollnagel, A / Ishiguro, K / Iuliano, A / Jakovcic, K / Jollet, C / Kamiscioglu, C / Kamiscioglu, M / Kim, S H / Kitagawa, N / Klicek, B / Kodama, K / Komatsu, M / Kose, U / Kreslo, I / Laudisio, F / Lauria, A / Ljubicic, A / Longhin, A / Loverre, P / Malenica, M / Malgin, A / Mandrioli, G / Matsuo, T / Matveev, V / Mauri, N / Medinaceli, E / Meregaglia, A / Mikado, S / Miyanishi, M / Mizutani, F / Monacelli, P / Montesi, M C / Morishima, K / Muciaccia, M T / Naganawa, N / Naka, T / Nakamura, M / Nakano, T / Niwa, K / Ogawa, S / Okateva, N / Olchevsky, A / Ozaki, K / Paoloni, A / Paparella, L / Park, B D / Pasqualini, L / Pastore, A / Patrizii, L / Pessard, H / Pistillo, C / Podgrudkov, D / Polukhina, N / Pozzato, M / Pupilli, F / Roda, M / Roganova, T / Rokujo, H / Rosa, G / Ryazhskaya, O / Sadovsky, A / Sato, O / Schembri, A / Shakiryanova, I / Shchedrina, T / Shibayama, E / Shibuya, H / Shiraishi, T / Simone, S / Sirignano, C / Sirri, G / Sotnikov, A / Spinetti, M / Stanco, L / Starkov, N / Stellacci, S M / Stipcevic, M / Strolin, P / Takahashi, S / Tenti, M / Terranova, F / Tioukov, V / Tufanli, S / Ustyuzhanin, A / Vasina, S / Vilain, P / Voevodina, E / Votano, L / Vuilleumier, J L / Wilquet, G / Wonsak, B / Yoon, C S

    Physical review letters

    2018  Volume 120, Issue 21, Page(s) 211801

    Abstract: The OPERA experiment was designed to study ν_{μ}→ν_{τ} oscillations in the appearance mode in the CERN to Gran Sasso Neutrino beam (CNGS). In this Letter, we report the final analysis of the full data sample collected between 2008 and 2012, corresponding ...

    Abstract The OPERA experiment was designed to study ν_{μ}→ν_{τ} oscillations in the appearance mode in the CERN to Gran Sasso Neutrino beam (CNGS). In this Letter, we report the final analysis of the full data sample collected between 2008 and 2012, corresponding to 17.97×10^{19} protons on target. Selection criteria looser than in previous analyses have produced ten ν_{τ} candidate events, thus reducing the statistical uncertainty in the measurement of the oscillation parameters and of ν_{τ} properties. A multivariate approach for event identification has been applied to the candidate events and the discovery of ν_{τ} appearance is confirmed with an improved significance level of 6.1σ. |Δm_{32}^{2}| has been measured, in appearance mode, with an accuracy of 20%. The measurement of the ν_{τ} charged-current cross section, for the first time with a negligible contamination from ν[over ¯]_{τ}, and the first direct evidence for the ν_{τ} lepton number are also reported.
    Language English
    Publishing date 2018-06-07
    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.120.211801
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Discovery of τ Neutrino Appearance in the CNGS Neutrino Beam with the OPERA Experiment.

    Agafonova, N / Aleksandrov, A / Anokhina, A / Aoki, S / Ariga, A / Ariga, T / Bender, D / Bertolin, A / Bodnarchuk, I / Bozza, C / Brugnera, R / Buonaura, A / Buontempo, S / Büttner, B / Chernyavsky, M / Chukanov, A / Consiglio, L / D'Ambrosio, N / De Lellis, G /
    De Serio, M / Del Amo Sanchez, P / Di Crescenzo, A / Di Ferdinando, D / Di Marco, N / Dmitrievski, S / Dracos, M / Duchesneau, D / Dusini, S / Dzhatdoev, T / Ebert, J / Ereditato, A / Fini, R A / Fornari, F / Fukuda, T / Galati, G / Garfagnini, A / Goldberg, J / Gornushkin, Y / Grella, G / Guler, A M / Gustavino, C / Hagner, C / Hara, T / Hayakawa, H / Hollnagel, A / Hosseini, B / Ishiguro, K / Jakovcic, K / Jollet, C / Kamiscioglu, C / Kamiscioglu, M / Kim, J H / Kim, S H / Kitagawa, N / Klicek, B / Kodama, K / Komatsu, M / Kose, U / Kreslo, I / Laudisio, F / Lauria, A / Ljubicic, A / Longhin, A / Loverre, P F / Malgin, A / Malenica, M / Mandrioli, G / Matsuo, T / Matsushita, T / Matveev, V / Mauri, N / Medinaceli, E / Meregaglia, A / Mikado, S / Miyanishi, M / Mizutani, F / Monacelli, P / Montesi, M C / Morishima, K / Muciaccia, M T / Naganawa, N / Naka, T / Nakamura, M / Nakano, T / Nakatsuka, Y / Niwa, K / Ogawa, S / Olchevsky, A / Omura, T / Ozaki, K / Paoloni, A / Paparella, L / Park, B D / Park, I G / Pasqualini, L / Pastore, A / Patrizii, L / Pessard, H / Pistillo, C / Podgrudkov, D / Polukhina, N / Pozzato, M / Pupilli, F / Roda, M / Roganova, T / Rokujo, H / Rosa, G / Ryazhskaya, O / Sato, O / Schembri, A / Schmidt-Parzefall, W / Shakirianova, I / Shchedrina, T / Sheshukov, A / Shibuya, H / Shiraishi, T / Shoziyoev, G / Simone, S / Sioli, M / Sirignano, C / Sirri, G / Sotnikov, A / Spinetti, M / Stanco, L / Starkov, N / Stellacci, S M / Stipcevic, M / Strolin, P / Takahashi, S / Tenti, M / Terranova, F / Tioukov, V / Tufanli, S / Vilain, P / Vladymyrov, M / Votano, L / Vuilleumier, J L / Wilquet, G / Wonsak, B / Yoon, C S / Zemskova, S

    Physical review letters

    2015  Volume 115, Issue 12, Page(s) 121802

    Abstract: The OPERA experiment was designed to search for ν_{μ}→ν_{τ} oscillations in appearance mode, i.e., by detecting the τ leptons produced in charged current ν_{τ} interactions. The experiment took data from 2008 to 2012 in the CERN Neutrinos to Gran Sasso ... ...

    Abstract The OPERA experiment was designed to search for ν_{μ}→ν_{τ} oscillations in appearance mode, i.e., by detecting the τ leptons produced in charged current ν_{τ} interactions. The experiment took data from 2008 to 2012 in the CERN Neutrinos to Gran Sasso beam. The observation of the ν_{μ}→ν_{τ} appearance, achieved with four candidate events in a subsample of the data, was previously reported. In this Letter, a fifth ν_{τ} candidate event, found in an enlarged data sample, is described. Together with a further reduction of the expected background, the candidate events detected so far allow us to assess the discovery of ν_{μ}→ν_{τ} oscillations in appearance mode with a significance larger than 5σ.
    Language English
    Publishing date 2015-09-18
    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.115.121802
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

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