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H.E.S.S. follow-up observations of binary black hole coalescence events during the second and third gravitational-wave observing runs of advanced LIGO and advanced Virgo
AHARONIAN, F.
Dublin Institute of Technology [DIT]
Max-Planck-Institut für Kernphysik [MPIK]
Russian-Armenian University [RAU]
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Dublin Institute of Technology [DIT]
Max-Planck-Institut für Kernphysik [MPIK]
Russian-Armenian University [RAU]
AHARONIAN, F.
Dublin Institute of Technology [DIT]
Max-Planck-Institut für Kernphysik [MPIK]
Russian-Armenian University [RAU]
Dublin Institute of Technology [DIT]
Max-Planck-Institut für Kernphysik [MPIK]
Russian-Armenian University [RAU]
ANGÜNER, E.O.
Centre de Physique des Particules de Marseille [CPPM]
Institut National de Physique Nucléaire et de Physique des Particules du CNRS [IN2P3]
Centre de Physique des Particules de Marseille [CPPM]
Institut National de Physique Nucléaire et de Physique des Particules du CNRS [IN2P3]
GIUNTI, L.
Institut de Recherches sur les lois Fondamentales de l'Univers [IRFU]
AstroParticule et Cosmologie [APC (UMR_7164)]
Institut de Recherches sur les lois Fondamentales de l'Univers [IRFU]
AstroParticule et Cosmologie [APC (UMR_7164)]
JAMROZY, M.
Uniwersytet Jagielloński w Krakowie = Jagiellonian University = Université Jagellon de Cracovie [UJ]
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Uniwersytet Jagielloński w Krakowie = Jagiellonian University = Université Jagellon de Cracovie [UJ]
Langue
en
Article de revue
Ce document a été publié dans
Astrophys.J. 2021, vol. 923, n° 1, p. 109
Résumé en anglais
We report on the observations of four well-localized binary black hole (BBH) mergers by the High Energy Stereoscopic System (H.E.S.S.) during the second and third observing runs of Advanced LIGO and Advanced Virgo, O2 and ...Lire la suite >
We report on the observations of four well-localized binary black hole (BBH) mergers by the High Energy Stereoscopic System (H.E.S.S.) during the second and third observing runs of Advanced LIGO and Advanced Virgo, O2 and O3. H.E.S.S. can observe 20 deg$^{2}$ of the sky at a time and follows up gravitational-wave (GW) events by “tiling” localization regions to maximize the covered localization probability. During O2 and O3, H.E.S.S. observed large portions of the localization regions, between 35% and 75%, for four BBH mergers (GW170814, GW190512_180714, GW190728_064510, and S200224ca). For these four GW events, we find no significant signal from a pointlike source in any of the observations, and we set upper limits on the very high energy (>100 GeV) γ-ray emission. The 1–10 TeV isotropic luminosity of these GW events is below 10$^{45}$ erg s$^{−1}$ at the times of the H.E.S.S. observations, around the level of the low-luminosity GRB 190829A. Assuming no changes are made to how follow-up observations are conducted, H.E.S.S. can expect to observe over 60 GW events per year in the fourth GW observing run, O4, of which eight would be observable with minimal latency.< Réduire
Mots clés en anglais
localization
gravitational radiation
LIGO
VIRGO
GeV
gamma ray: VHE
TeV
energy: high
black hole: binary: coalescence
gamma ray: burst
black hole: binary
HESS
Origine
Importé de halUnités de recherche