First observation of the cosmic ray shadow of the Moon and the Sun with KM3NeT/ORCA
International audience This article reports the first observation of the Moon and the Sun shadows in the sky distribution of cosmic-ray induced muons measured by the KM3NeT/ORCA detector. The analysed data-taking period spans from February 2020 to November 2021, when the detector had 6 Detection Uni...
Published in: | The European Physical Journal C |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2023
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Subjects: | |
Online Access: | https://hal.science/hal-04087888 https://doi.org/10.1140/epjc/s10052-023-11401-5 |
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ftanrparis:oai:HAL:hal-04087888v1 |
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record_format |
openpolar |
institution |
Open Polar |
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Portail HAL-ANR (Agence Nationale de la Recherche) |
op_collection_id |
ftanrparis |
language |
English |
topic |
detector: calibration lunar cosmic radiation KM3NeT muon angular resolution shadowing optical statistical performance ANTARES photomultiplier Cherenkov counter statistical analysis numerical calculations Monte Carlo solar flux background [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
spellingShingle |
detector: calibration lunar cosmic radiation KM3NeT muon angular resolution shadowing optical statistical performance ANTARES photomultiplier Cherenkov counter statistical analysis numerical calculations Monte Carlo solar flux background [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Aiello, S Albert, A Alves Garre, S Aly, Z Ambrosone, A Ameli, F Andre, M Anghinolfi, M Anguita, M Ardid, M Ardid, S Aublin, J Bagatelas, C Bailly-Salins, L Baret, B Basegmez Du Pree, S Becherini, Y Bendahman, M Benfenati, F Berbee, E Bertin, V Biagi, S Boettcher, M Cabo, M. Bou Boumaaza, J Bouta, M Bouwhuis, M Bozza, C Brânzas, H Bruijn, R Brunner, J Bruno, R Buis, E Buompane, R Busto, J Caiffi, B Calvo, D Campion, S Capone, A Carenini, F Carretero, V Castaldi, P Celli, S Cerisy, L Chabab, M Chau, N Chen, A Cherkaoui El Moursli, R Cherubini, S Chiarella, V Chiarusi, T Circella, M Cocimano, R Coelho, J.A.B Coleiro, A Coniglione, R Coyle, P Creusot, A Cruz, A Cuttone, G Dallier, R Darras, Y de Benedittis, A de Martino, B del Burgo, R Di Palma, I Dìaz, A.F Diego-Tortosa, D Distefano, C Domi, A Donzaud, C Dornic, D Dörr, M Drakopoulou, E Drouhin, D Eberl, T Eddyamoui, A van Eeden, T Eff, M van Eijk, D El Bojaddaini, I El Hedri, S Enzenhöfer, A Espinosa, V Ferrara, G Filipovíc, M.D Filippini, F Fusco, L.A Gabriel, J Gal, T García Méndez, J Garcia Soto, A Garufi, F Gatius Oliver, C Geißelbrecht, N Gialanella, L Giorgio, E Girardi, A Goos, I Gozzini, S.R Gracia, R Graf, K Guderian, D Guidi, C Guillon, B Gutiérrez, M Haegel, L van Haren, H Heijboer, A Hekalo, A Hennig, L Hernández-Rey, J.J Huang, F Ibnsalih, W. Idrissi Illuminati, G James, C.W Janezashvili, D de Jong, M de Jong, P Jung, B.J Kalaczynski, P Kalekin, O Katz, U.F Khan Chowdhury, N.R Kistauri, G van der Knaap, F Kooijman, P Kouchner, A Kulikovskiy, V Labalme, M Lahmann, R Lakhal, A Lamoureux, M Larosa, G Lastoria, C Lazo, A Le Breton, R Le Stum, S Lehaut, G Leonora, E Lessing, N Levi, G Liang, S Lindsey Clark, M Longhitano, F Maderer, L Majumdar, J Manczak, J Margiotta, A Marinelli, A Markou, C Martin, L Martínez-Mora, J.A Martini, A Marzaioli, F Mastrodicasa, M Mastroianni, S Melis, K.W Miccichè, S Miele, G Migliozzi, P Migneco, E Mijakowski, P Mollo, C.M Morales-Gallegos, L Morley-Wong, C Moussa, A Muller, R Musone, M.R Musumeci, M Nauta, L Navas, S Nicolau, C.A Nkosi, B Ó Fearraigh, B Orlando, A Oukacha, E Palacios González, J Papalashvili, G Papaleo, R Gomez, E.J. Pastor Paun, A.M Pavalas, G.E Pellegrino, C Peña Martínez, S Perrin-Terrin, M Perronnel, J Pestel, V Piattelli, P Pisanti, O Poirè, C Popa, V Pradier, T Pulvirenti, S Quéméner, G Rahaman, U Randazzo, N Razzaque, S Rea, I.C Real, D Reck, S Riccobene, G Robinson, J Romanov, A Salesa Greus, F Samtleben, D.F.E Sánchez Losa, A Sanguineti, M Santonastaso, C Santonocito, D Sapienza, P Sathe, A Schnabel, J Schneider, M.F Schumann, J Schutte, H.M Seneca, J Sgura, I Shanidze, R Sharma, A Simonelli, A Sinopoulou, A Smirnov, M.V Spisso, B Spurio, M Stavropoulos, D Stellacci, S.M Taiuti, M Tavzarashvili, K Tayalati, Y Tedjditi, H Thiersen, H Tsagkli, S Tsourapis, V Tzamariudaki, E van Elewyck, V Vannoye, G Vasileiadis, G Versari, F Viola, S Vivolo, D Warnhofer, H Wilms, J de Wolf, E Yepes-Ramirez, H Yousfi, T Zavatarelli, S Zegarelli, A Zito, D Zornoza, J.D Zúñiga, J Zywucka, N First observation of the cosmic ray shadow of the Moon and the Sun with KM3NeT/ORCA |
topic_facet |
detector: calibration lunar cosmic radiation KM3NeT muon angular resolution shadowing optical statistical performance ANTARES photomultiplier Cherenkov counter statistical analysis numerical calculations Monte Carlo solar flux background [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
description |
International audience This article reports the first observation of the Moon and the Sun shadows in the sky distribution of cosmic-ray induced muons measured by the KM3NeT/ORCA detector. The analysed data-taking period spans from February 2020 to November 2021, when the detector had 6 Detection Units deployed at the bottom of the Mediterranean Sea, each composed of 18 Digital Optical Modules. The shadows induced by the Moon and the Sun were detected at their nominal position with a statistical significance of 4.2$\sigma $ and 6.2$\sigma $, and an angular resolution of $\sigma _{res}=0.49^\circ $ and $\sigma _{res}=0.66^\circ $, respectively, consistent with the prediction of $0.53^\circ $ from simulations. This early result confirms the effectiveness of the detector calibration, in time, position and orientation and the accuracy of the event direction reconstruction. This also demonstrates the performance and the competitiveness of the detector in terms of pointing accuracy and angular resolution. |
author2 |
Institut Pluridisciplinaire Hubert Curien (IPHC) Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA)) Centre de Physique des Particules de Marseille (CPPM) Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) AstroParticule et Cosmologie (APC (UMR_7164)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Laboratoire de physique corpusculaire de Caen (LPCC) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN) Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de physique subatomique et des technologies associées (SUBATECH) Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique) Institut Mines-Télécom Paris (IMT)-Institut Mines-Télécom Paris (IMT)-Nantes université - UFR des Sciences et des Techniques (Nantes univ - UFR ST) Nantes Université - pôle Sciences et technologie Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Sciences et technologie Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ) Laboratoire de Physique de Clermont (LPC) Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA) Institut universitaire de France (IUF) Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.) Laboratoire Univers et Particules de Montpellier (LUPM) Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM) KM3NeT ANR-18-IDEX-0001,Université de Paris,Université de Paris(2018) ANR-10-LABX-0023,UnivEarthS,Earth - Planets - Universe: observation, modeling, transfer(2010) |
format |
Article in Journal/Newspaper |
author |
Aiello, S Albert, A Alves Garre, S Aly, Z Ambrosone, A Ameli, F Andre, M Anghinolfi, M Anguita, M Ardid, M Ardid, S Aublin, J Bagatelas, C Bailly-Salins, L Baret, B Basegmez Du Pree, S Becherini, Y Bendahman, M Benfenati, F Berbee, E Bertin, V Biagi, S Boettcher, M Cabo, M. Bou Boumaaza, J Bouta, M Bouwhuis, M Bozza, C Brânzas, H Bruijn, R Brunner, J Bruno, R Buis, E Buompane, R Busto, J Caiffi, B Calvo, D Campion, S Capone, A Carenini, F Carretero, V Castaldi, P Celli, S Cerisy, L Chabab, M Chau, N Chen, A Cherkaoui El Moursli, R Cherubini, S Chiarella, V Chiarusi, T Circella, M Cocimano, R Coelho, J.A.B Coleiro, A Coniglione, R Coyle, P Creusot, A Cruz, A Cuttone, G Dallier, R Darras, Y de Benedittis, A de Martino, B del Burgo, R Di Palma, I Dìaz, A.F Diego-Tortosa, D Distefano, C Domi, A Donzaud, C Dornic, D Dörr, M Drakopoulou, E Drouhin, D Eberl, T Eddyamoui, A van Eeden, T Eff, M van Eijk, D El Bojaddaini, I El Hedri, S Enzenhöfer, A Espinosa, V Ferrara, G Filipovíc, M.D Filippini, F Fusco, L.A Gabriel, J Gal, T García Méndez, J Garcia Soto, A Garufi, F Gatius Oliver, C Geißelbrecht, N Gialanella, L Giorgio, E Girardi, A Goos, I Gozzini, S.R Gracia, R Graf, K Guderian, D Guidi, C Guillon, B Gutiérrez, M Haegel, L van Haren, H Heijboer, A Hekalo, A Hennig, L Hernández-Rey, J.J Huang, F Ibnsalih, W. Idrissi Illuminati, G James, C.W Janezashvili, D de Jong, M de Jong, P Jung, B.J Kalaczynski, P Kalekin, O Katz, U.F Khan Chowdhury, N.R Kistauri, G van der Knaap, F Kooijman, P Kouchner, A Kulikovskiy, V Labalme, M Lahmann, R Lakhal, A Lamoureux, M Larosa, G Lastoria, C Lazo, A Le Breton, R Le Stum, S Lehaut, G Leonora, E Lessing, N Levi, G Liang, S Lindsey Clark, M Longhitano, F Maderer, L Majumdar, J Manczak, J Margiotta, A Marinelli, A Markou, C Martin, L Martínez-Mora, J.A Martini, A Marzaioli, F Mastrodicasa, M Mastroianni, S Melis, K.W Miccichè, S Miele, G Migliozzi, P Migneco, E Mijakowski, P Mollo, C.M Morales-Gallegos, L Morley-Wong, C Moussa, A Muller, R Musone, M.R Musumeci, M Nauta, L Navas, S Nicolau, C.A Nkosi, B Ó Fearraigh, B Orlando, A Oukacha, E Palacios González, J Papalashvili, G Papaleo, R Gomez, E.J. Pastor Paun, A.M Pavalas, G.E Pellegrino, C Peña Martínez, S Perrin-Terrin, M Perronnel, J Pestel, V Piattelli, P Pisanti, O Poirè, C Popa, V Pradier, T Pulvirenti, S Quéméner, G Rahaman, U Randazzo, N Razzaque, S Rea, I.C Real, D Reck, S Riccobene, G Robinson, J Romanov, A Salesa Greus, F Samtleben, D.F.E Sánchez Losa, A Sanguineti, M Santonastaso, C Santonocito, D Sapienza, P Sathe, A Schnabel, J Schneider, M.F Schumann, J Schutte, H.M Seneca, J Sgura, I Shanidze, R Sharma, A Simonelli, A Sinopoulou, A Smirnov, M.V Spisso, B Spurio, M Stavropoulos, D Stellacci, S.M Taiuti, M Tavzarashvili, K Tayalati, Y Tedjditi, H Thiersen, H Tsagkli, S Tsourapis, V Tzamariudaki, E van Elewyck, V Vannoye, G Vasileiadis, G Versari, F Viola, S Vivolo, D Warnhofer, H Wilms, J de Wolf, E Yepes-Ramirez, H Yousfi, T Zavatarelli, S Zegarelli, A Zito, D Zornoza, J.D Zúñiga, J Zywucka, N |
author_facet |
Aiello, S Albert, A Alves Garre, S Aly, Z Ambrosone, A Ameli, F Andre, M Anghinolfi, M Anguita, M Ardid, M Ardid, S Aublin, J Bagatelas, C Bailly-Salins, L Baret, B Basegmez Du Pree, S Becherini, Y Bendahman, M Benfenati, F Berbee, E Bertin, V Biagi, S Boettcher, M Cabo, M. Bou Boumaaza, J Bouta, M Bouwhuis, M Bozza, C Brânzas, H Bruijn, R Brunner, J Bruno, R Buis, E Buompane, R Busto, J Caiffi, B Calvo, D Campion, S Capone, A Carenini, F Carretero, V Castaldi, P Celli, S Cerisy, L Chabab, M Chau, N Chen, A Cherkaoui El Moursli, R Cherubini, S Chiarella, V Chiarusi, T Circella, M Cocimano, R Coelho, J.A.B Coleiro, A Coniglione, R Coyle, P Creusot, A Cruz, A Cuttone, G Dallier, R Darras, Y de Benedittis, A de Martino, B del Burgo, R Di Palma, I Dìaz, A.F Diego-Tortosa, D Distefano, C Domi, A Donzaud, C Dornic, D Dörr, M Drakopoulou, E Drouhin, D Eberl, T Eddyamoui, A van Eeden, T Eff, M van Eijk, D El Bojaddaini, I El Hedri, S Enzenhöfer, A Espinosa, V Ferrara, G Filipovíc, M.D Filippini, F Fusco, L.A Gabriel, J Gal, T García Méndez, J Garcia Soto, A Garufi, F Gatius Oliver, C Geißelbrecht, N Gialanella, L Giorgio, E Girardi, A Goos, I Gozzini, S.R Gracia, R Graf, K Guderian, D Guidi, C Guillon, B Gutiérrez, M Haegel, L van Haren, H Heijboer, A Hekalo, A Hennig, L Hernández-Rey, J.J Huang, F Ibnsalih, W. Idrissi Illuminati, G James, C.W Janezashvili, D de Jong, M de Jong, P Jung, B.J Kalaczynski, P Kalekin, O Katz, U.F Khan Chowdhury, N.R Kistauri, G van der Knaap, F Kooijman, P Kouchner, A Kulikovskiy, V Labalme, M Lahmann, R Lakhal, A Lamoureux, M Larosa, G Lastoria, C Lazo, A Le Breton, R Le Stum, S Lehaut, G Leonora, E Lessing, N Levi, G Liang, S Lindsey Clark, M Longhitano, F Maderer, L Majumdar, J Manczak, J Margiotta, A Marinelli, A Markou, C Martin, L Martínez-Mora, J.A Martini, A Marzaioli, F Mastrodicasa, M Mastroianni, S Melis, K.W Miccichè, S Miele, G Migliozzi, P Migneco, E Mijakowski, P Mollo, C.M Morales-Gallegos, L Morley-Wong, C Moussa, A Muller, R Musone, M.R Musumeci, M Nauta, L Navas, S Nicolau, C.A Nkosi, B Ó Fearraigh, B Orlando, A Oukacha, E Palacios González, J Papalashvili, G Papaleo, R Gomez, E.J. Pastor Paun, A.M Pavalas, G.E Pellegrino, C Peña Martínez, S Perrin-Terrin, M Perronnel, J Pestel, V Piattelli, P Pisanti, O Poirè, C Popa, V Pradier, T Pulvirenti, S Quéméner, G Rahaman, U Randazzo, N Razzaque, S Rea, I.C Real, D Reck, S Riccobene, G Robinson, J Romanov, A Salesa Greus, F Samtleben, D.F.E Sánchez Losa, A Sanguineti, M Santonastaso, C Santonocito, D Sapienza, P Sathe, A Schnabel, J Schneider, M.F Schumann, J Schutte, H.M Seneca, J Sgura, I Shanidze, R Sharma, A Simonelli, A Sinopoulou, A Smirnov, M.V Spisso, B Spurio, M Stavropoulos, D Stellacci, S.M Taiuti, M Tavzarashvili, K Tayalati, Y Tedjditi, H Thiersen, H Tsagkli, S Tsourapis, V Tzamariudaki, E van Elewyck, V Vannoye, G Vasileiadis, G Versari, F Viola, S Vivolo, D Warnhofer, H Wilms, J de Wolf, E Yepes-Ramirez, H Yousfi, T Zavatarelli, S Zegarelli, A Zito, D Zornoza, J.D Zúñiga, J Zywucka, N |
author_sort |
Aiello, S |
title |
First observation of the cosmic ray shadow of the Moon and the Sun with KM3NeT/ORCA |
title_short |
First observation of the cosmic ray shadow of the Moon and the Sun with KM3NeT/ORCA |
title_full |
First observation of the cosmic ray shadow of the Moon and the Sun with KM3NeT/ORCA |
title_fullStr |
First observation of the cosmic ray shadow of the Moon and the Sun with KM3NeT/ORCA |
title_full_unstemmed |
First observation of the cosmic ray shadow of the Moon and the Sun with KM3NeT/ORCA |
title_sort |
first observation of the cosmic ray shadow of the moon and the sun with km3net/orca |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04087888 https://doi.org/10.1140/epjc/s10052-023-11401-5 |
genre |
Orca |
genre_facet |
Orca |
op_source |
Eur.Phys.J.C https://hal.science/hal-04087888 Eur.Phys.J.C, 2023, 83 (4), pp.344. ⟨10.1140/epjc/s10052-023-11401-5⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/arxiv/2211.08977 info:eu-repo/semantics/altIdentifier/doi/10.1140/epjc/s10052-023-11401-5 ARXIV: 2211.08977 INSPIRE: 2182910 |
op_doi |
https://doi.org/10.1140/epjc/s10052-023-11401-5 |
container_title |
The European Physical Journal C |
container_volume |
83 |
container_issue |
4 |
_version_ |
1814717508102389760 |
spelling |
ftanrparis:oai:HAL:hal-04087888v1 2024-11-03T14:58:42+00:00 First observation of the cosmic ray shadow of the Moon and the Sun with KM3NeT/ORCA Aiello, S Albert, A Alves Garre, S Aly, Z Ambrosone, A Ameli, F Andre, M Anghinolfi, M Anguita, M Ardid, M Ardid, S Aublin, J Bagatelas, C Bailly-Salins, L Baret, B Basegmez Du Pree, S Becherini, Y Bendahman, M Benfenati, F Berbee, E Bertin, V Biagi, S Boettcher, M Cabo, M. Bou Boumaaza, J Bouta, M Bouwhuis, M Bozza, C Brânzas, H Bruijn, R Brunner, J Bruno, R Buis, E Buompane, R Busto, J Caiffi, B Calvo, D Campion, S Capone, A Carenini, F Carretero, V Castaldi, P Celli, S Cerisy, L Chabab, M Chau, N Chen, A Cherkaoui El Moursli, R Cherubini, S Chiarella, V Chiarusi, T Circella, M Cocimano, R Coelho, J.A.B Coleiro, A Coniglione, R Coyle, P Creusot, A Cruz, A Cuttone, G Dallier, R Darras, Y de Benedittis, A de Martino, B del Burgo, R Di Palma, I Dìaz, A.F Diego-Tortosa, D Distefano, C Domi, A Donzaud, C Dornic, D Dörr, M Drakopoulou, E Drouhin, D Eberl, T Eddyamoui, A van Eeden, T Eff, M van Eijk, D El Bojaddaini, I El Hedri, S Enzenhöfer, A Espinosa, V Ferrara, G Filipovíc, M.D Filippini, F Fusco, L.A Gabriel, J Gal, T García Méndez, J Garcia Soto, A Garufi, F Gatius Oliver, C Geißelbrecht, N Gialanella, L Giorgio, E Girardi, A Goos, I Gozzini, S.R Gracia, R Graf, K Guderian, D Guidi, C Guillon, B Gutiérrez, M Haegel, L van Haren, H Heijboer, A Hekalo, A Hennig, L Hernández-Rey, J.J Huang, F Ibnsalih, W. Idrissi Illuminati, G James, C.W Janezashvili, D de Jong, M de Jong, P Jung, B.J Kalaczynski, P Kalekin, O Katz, U.F Khan Chowdhury, N.R Kistauri, G van der Knaap, F Kooijman, P Kouchner, A Kulikovskiy, V Labalme, M Lahmann, R Lakhal, A Lamoureux, M Larosa, G Lastoria, C Lazo, A Le Breton, R Le Stum, S Lehaut, G Leonora, E Lessing, N Levi, G Liang, S Lindsey Clark, M Longhitano, F Maderer, L Majumdar, J Manczak, J Margiotta, A Marinelli, A Markou, C Martin, L Martínez-Mora, J.A Martini, A Marzaioli, F Mastrodicasa, M Mastroianni, S Melis, K.W Miccichè, S Miele, G Migliozzi, P Migneco, E Mijakowski, P Mollo, C.M Morales-Gallegos, L Morley-Wong, C Moussa, A Muller, R Musone, M.R Musumeci, M Nauta, L Navas, S Nicolau, C.A Nkosi, B Ó Fearraigh, B Orlando, A Oukacha, E Palacios González, J Papalashvili, G Papaleo, R Gomez, E.J. 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Laboratoire Univers et Particules de Montpellier (LUPM) Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM) KM3NeT ANR-18-IDEX-0001,Université de Paris,Université de Paris(2018) ANR-10-LABX-0023,UnivEarthS,Earth - Planets - Universe: observation, modeling, transfer(2010) 2023 https://hal.science/hal-04087888 https://doi.org/10.1140/epjc/s10052-023-11401-5 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/arxiv/2211.08977 info:eu-repo/semantics/altIdentifier/doi/10.1140/epjc/s10052-023-11401-5 ARXIV: 2211.08977 INSPIRE: 2182910 Eur.Phys.J.C https://hal.science/hal-04087888 Eur.Phys.J.C, 2023, 83 (4), pp.344. ⟨10.1140/epjc/s10052-023-11401-5⟩ detector: calibration lunar cosmic radiation KM3NeT muon angular resolution shadowing optical statistical performance ANTARES photomultiplier Cherenkov counter statistical analysis numerical calculations Monte Carlo solar flux background [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] info:eu-repo/semantics/article Journal articles 2023 ftanrparis https://doi.org/10.1140/epjc/s10052-023-11401-5 2024-10-24T00:01:34Z International audience This article reports the first observation of the Moon and the Sun shadows in the sky distribution of cosmic-ray induced muons measured by the KM3NeT/ORCA detector. The analysed data-taking period spans from February 2020 to November 2021, when the detector had 6 Detection Units deployed at the bottom of the Mediterranean Sea, each composed of 18 Digital Optical Modules. The shadows induced by the Moon and the Sun were detected at their nominal position with a statistical significance of 4.2$\sigma $ and 6.2$\sigma $, and an angular resolution of $\sigma _{res}=0.49^\circ $ and $\sigma _{res}=0.66^\circ $, respectively, consistent with the prediction of $0.53^\circ $ from simulations. This early result confirms the effectiveness of the detector calibration, in time, position and orientation and the accuracy of the event direction reconstruction. This also demonstrates the performance and the competitiveness of the detector in terms of pointing accuracy and angular resolution. Article in Journal/Newspaper Orca Portail HAL-ANR (Agence Nationale de la Recherche) The European Physical Journal C 83 4 |