CALET Search for Electromagnetic Counterparts of Gravitational Waves during the LIGO/Virgo O3 Run
- Univ. of Florence (Italy); Istituto Nazionale di Fisica Nucleare (INFN) (Italy)
- Waseda Univ., Shinjuku (Japan); Japan Aerospace Exploration Agency, Tsukuba (Japan)
- Univ. of Tokyo (Japan)
- Univ. of Siena (Italy); National Institute of Nuclear Physics (INFN), Pisa (Italy)
- Washington Univ., St. Louis, MO (United States)
- NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
- Univ. of Maryland, Baltimore, MD (United States); NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
- National Research Council (CNR) (Italy). Institute of Applied Physics "Nello Carrara" (IFAC)
- Louisiana State Univ., Baton Rouge, LA (United States)
- University of Padova (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Padova (Italy)
- Japan Aerospace Exploration Agency (ISAS/JAXA), Sagamihara, Kanagawa (Japan)
- Univ. of Maryland, Baltimore, MD (United States)
- Kanagawa Univ., Yokohama, Kanagawa (Japan)
- Hirosaki Univ. (Japan)
- Kyoto Univ. (Japan)
- Shibaura Institute of Technology (Japan)
- Waseda Univ., Shinjuku (Japan)
- National Institute of Polar Research (Japan)
- Yokohama National University (Japan)
- Shinshu Univ., Matsumoto, Nagano (Japan)
- Institute of Particle and Nuclear Studies (Japan)
- National Institute of Nuclear Physics (INFN), Pisa (Italy); Univ. of Pisa (Italy)
- Ibaraki College (Japan)
- NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Univ. of Maryland, College Park, MD (United States)
- Ritsumeikan University (Japan)
- Istituto Nazionale di Fisica Nucleare (INFN) (Italy)
- Univ. of Denver, CO (United States)
- National Institute of Information and Communications Technology (Japan)
- Univ. of Florence (Italy); Istituto Nazionale di Fisica Nucleare (INFN) (Italy); National Research Council (CNR) (Italy). Institute of Applied Physics "Nello Carrara" (IFAC)
- Istituto Nazionale di Fisica Nucleare (INFN) (Italy); National Research Council (CNR) (Italy). Institute of Applied Physics "Nello Carrara" (IFAC)
- Aoyama Gakuin Univ., Sagamihara, Kanagawa (Japan)
- Nihon Univ. (Japan)
- Univ. of Florence (Italy)
- Osaka Metropolitan University (Japan)
- National Institutes for Quantum and Radiological Science and Technology (QST) (Japan)
- Nagoya Univ. (Japan)
- Ibaraki Univ. (Japan)
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 LaBr3(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.
- Research Organization:
- Louisiana State Univ., Baton Rouge, LA (United States)
- Sponsoring Organization:
- Japan Society for the Promotion of Science (JSPS); Ministry of Education, Culture, Sports, Science and Technology (MEXT); Italian Space Agency (ASI); National Aeronautics and Space Administration (NASA)
- OSTI ID:
- 1877646
- Journal Information:
- The Astrophysical Journal, Journal Name: The Astrophysical Journal Journal Issue: 1 Vol. 933; ISSN 0004-637X
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
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