The CALorimetric Electron Telescope (CALET) on the International Space Station 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 ∼ 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 2015 October. 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 consisting of LaBr 3(Ce) scintillators sensitive to 7 keV-1 MeV gamma rays and a Soft Gamma-ray Monitor BGO scintillator sensitive to 40 keV-20 MeV—and the high-energy CAL consisting of a charge detection module, imaging calorimeter, and the fully active total absorption calorimeter. The analysis procedure is described and upper limits to the time-averaged fluxes are presented.

CALET Search for Electromagnetic Counterparts of Gravitational Waves during the LIGO/Virgo O3 Run / 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.; Nolfo G.A.D.; 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.. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 1538-4357. - ELETTRONICO. - 933:(2022), pp. 85-1-85-16. [10.3847/1538-4357/ac6f53]

CALET Search for Electromagnetic Counterparts of Gravitational Waves during the LIGO/Virgo O3 Run

Adriani O.;Berti E.;Bongi M.;Gonzi S.;Pacini L.;Spillantini P.;
2022

Abstract

The CALorimetric Electron Telescope (CALET) on the International Space Station 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 ∼ 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 2015 October. 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 consisting of LaBr 3(Ce) scintillators sensitive to 7 keV-1 MeV gamma rays and a Soft Gamma-ray Monitor BGO scintillator sensitive to 40 keV-20 MeV—and the high-energy CAL consisting of a charge detection module, imaging calorimeter, and the fully active total absorption calorimeter. The analysis procedure is described and upper limits to the time-averaged fluxes are presented.
933
85-1
85-16
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.; Nolfo G.A.D.; 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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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2158/1279906
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