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CALET Search for electromagnetic counterparts of gravitational waves during the LIGO/Virgo O3 run

The CALorimetric Electron Telescope (CALET) on the International Space Station (ISS) consists of a high-energy cosmic ray CALorimeter (CAL) and a lower-energy CALET Gamma ray Burst Monitor (CGBM). CAL is sensitive to electrons up to 20 TeV, cosmic ray nuclei from Z = 1 through Z \(\sim\) 40, and gam...

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Published in:arXiv.org 2022-07
Main Authors: Adriani, O, Akaike, Y, Asano, K, Asaoka, Y, Berti, E, Bigongiari, G, Binns, W R, Bongi, M, Brogi, P, Bruno, A, Buckley, J H, Cannady, N, Castellini, G, Checchia, C, Cherry, M L, Collazuol, G, Ebisawa, K, Ficklin, A W, Fuke, H, Gonzi, S, Guzik, T G, Hams, T, Hibino, K, Ichimura, M, Ioka, K, Ishizaki, W, Israel, M H, Kasahara, K, Kataoka, J, Kataoka, R, Katayose, Y, Kato, C, Kawanaka, N, Kawakubo, Y, Kobayashi, K, Kohri, K, Krawczynski, H S, Krizmanic, J F, Maestro, P, Marrocchesi, P S, Messineo, A M, Mitchell, J W, Miyake, S, Moiseev, A A, Mori, M, Mori, N, Motz, H M, Munakata, K, Nakahira, S, Nishimura, J, de Nolfo, G A, Okuno, S, Ormes, J F, Ospina, N, Ozawa, S, Pacini, L, Papini, P, Rauch, B F, Ricciarini, S B, Sakai, K, Sakamoto, T, Sasaki, M, Shimizu, Y, Shiomi, A, Spillantini, P, Stolzi, F, Sugita, S, Sulaj, A, Takita, M, Tamura, T, Terasawa, T, Torii, S, Tsunesada, Y, Uchihori, Y, Vannuccini, E, Wefel, J P, Yamaoka, K, Yanagita, S, Yoshida, A, Yoshida, K, Zober, W V
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Language:English
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Summary:The CALorimetric Electron Telescope (CALET) on the International Space Station (ISS) consists of a high-energy cosmic ray CALorimeter (CAL) and a lower-energy CALET Gamma ray Burst Monitor (CGBM). CAL is sensitive to electrons up to 20 TeV, cosmic ray nuclei from Z = 1 through Z \(\sim\) 40, and gamma rays over the range 1 GeV - 10 TeV. CGBM observes gamma rays from 7 keV to 20 MeV. The combined CAL-CGBM instrument has conducted a search for gamma ray bursts (GRBs) since Oct. 2015. We report here on the results of a search for X-ray/gamma ray counterparts to gravitational wave events reported during the LIGO/Virgo observing run O3. No events have been detected that pass all acceptance criteria. We describe the components, performance, and triggering algorithms of the CGBM - the two Hard X-ray Monitors (HXM) consisting of LaBr\(_{3}\)(Ce) scintillators sensitive to 7 keV to 1 MeV gamma rays and a Soft Gamma ray Monitor (SGM) BGO scintillator sensitive to 40 keV to 20 MeV - and the high-energy CAL consisting of a CHarge-Detection module (CHD), IMaging Calorimeter (IMC), and fully active Total Absorption Calorimeter (TASC). The analysis procedure is described and upper limits to the time-averaged fluxes are presented.
ISSN:2331-8422
DOI:10.48550/arxiv.2207.03621