We present upper limits in the hard X-ray and gamma-ray bands at the time of the Laser Interferometer Gravitational-wave Observatory (LIGO) gravitational-wave event GW151226 derived from the CALorimetric Electron Telescope (CALET) observation. The main instrument of CALET, CALorimeter (CAL), observes gamma-rays from ~1 GeV up to 10 TeV with a field of view of ~2 sr. The CALET gamma-ray burst monitor (CGBM) views ~3 sr and ~2π sr of the sky in the 7 keV–1 MeV and the 40 keV–20 MeV bands, respectively, by using two different scintillator-based instruments. The CGBM covered 32.5% and 49.1% of the GW151226 sky localization probability in the 7 keV–1 MeV and 40 keV–20 MeV bands respectively. We place a 90% upper limit of 2 × 10−7 erg cm−2 s−1 in the 1–100 GeV band where CAL reaches 15% of the integrated LIGO probability (~1.1 sr). The CGBM 7σ upper limits are 1.0 × 10−6 erg cm−2 s−1 (7–500 keV) and 1.8 × 10−6 erg cm−2 s−1 (50–1000 keV) for a 1 s exposure. Those upper limits correspond to the luminosity of 3–5 × 1049 erg s−1, which is significantly lower than typical short GRBs.

Adriani, O., Akaike, Y., Asano, K., Asaoka, Y., Bagliesi, M.g., Bigongiari, G., et al. (2016). CALET UPPER LIMITS on X-RAY and GAMMA-RAY COUNTERPARTS of GW151226. THE ASTROPHYSICAL JOURNAL LETTERS, 829(1) [10.3847/2041-8205/829/1/L20].

CALET UPPER LIMITS on X-RAY and GAMMA-RAY COUNTERPARTS of GW151226

Palma F.;SPARVOLI R.;
2016

Abstract

We present upper limits in the hard X-ray and gamma-ray bands at the time of the Laser Interferometer Gravitational-wave Observatory (LIGO) gravitational-wave event GW151226 derived from the CALorimetric Electron Telescope (CALET) observation. The main instrument of CALET, CALorimeter (CAL), observes gamma-rays from ~1 GeV up to 10 TeV with a field of view of ~2 sr. The CALET gamma-ray burst monitor (CGBM) views ~3 sr and ~2π sr of the sky in the 7 keV–1 MeV and the 40 keV–20 MeV bands, respectively, by using two different scintillator-based instruments. The CGBM covered 32.5% and 49.1% of the GW151226 sky localization probability in the 7 keV–1 MeV and 40 keV–20 MeV bands respectively. We place a 90% upper limit of 2 × 10−7 erg cm−2 s−1 in the 1–100 GeV band where CAL reaches 15% of the integrated LIGO probability (~1.1 sr). The CGBM 7σ upper limits are 1.0 × 10−6 erg cm−2 s−1 (7–500 keV) and 1.8 × 10−6 erg cm−2 s−1 (50–1000 keV) for a 1 s exposure. Those upper limits correspond to the luminosity of 3–5 × 1049 erg s−1, which is significantly lower than typical short GRBs.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - Fisica Nucleare e Subnucleare
Settore FIS/01 - Fisica Sperimentale
English
Adriani, O., Akaike, Y., Asano, K., Asaoka, Y., Bagliesi, M.g., Bigongiari, G., et al. (2016). CALET UPPER LIMITS on X-RAY and GAMMA-RAY COUNTERPARTS of GW151226. THE ASTROPHYSICAL JOURNAL LETTERS, 829(1) [10.3847/2041-8205/829/1/L20].
Adriani, O; Akaike, Y; Asano, K; Asaoka, Y; Bagliesi, Mg; Bigongiari, G; Binns, Wr; Bonechi, S; Bongi, M; Brogi, P; Buckley, Jh; Cannady, N; Castellini, G; Checchia C., L; Cherry, Ml; Collazuol, G; Di Felice, Vd; Ebisawa, K; Fuke, H; Guzik, Tg; Hams and, Teahampahanhahakqaiamraiaksaiawfaiamhjajaakakakhakajhakartakayuakacvakanwakayxakahyakahsjakajfdakasralatzamapbamapsbamaamzamajwaamasaamakaamaaaeamakhamamaamanaamahmaamakvamahhanayenanasganajnaoasqaoajfaaoashapal; Palma, F; Papini and, Paapaaviarabfjarasaasakeasatxasameasayqasaa; Sparvoli, R; Spillantini and, Paasafbataiaatamnatamfatatqatanqatataatahnatasgatayaauayyauasnavaeaawajpkayakaayasaayaaxayakaayat
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/210750
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