2016/02/29 by V. Savchenko, C. Ferrigno, S. Mereghetti +16 · 5 citations
Physics and Astronomy · #Aerospace engineering #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Event (particle physics) #Gamma ray #Gamma-ray burst #Gamma-ray bursts and supernovae #Gravitational wave #LIGO #Physics #Pulsars and Gravitational Waves Research #Range (aeronautics) #Sky #astro-ph.HE
paper · pdf · doi:10.3847/2041-8205/820/2/l36
accepted for publication in ApJL
arxiv created 2016/03/07 · openalex publication_date 2016/03/30 · arxiv updated 2016/04/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
ABSTRACT Using observations of the INTErnational Gamma-Ray Astrophysics Laboratory ( INTEGRAL ), we place upper limits on the gamma-ray and hard X-ray prompt emission associated with the gravitational wave event GW150914, which was discovered by the LIGO/Virgo Collaboration. The omnidirectional view of the INTEGRAL /SPI-ACS has allowed us to constrain the fraction of energy emitted in the hard X-ray electromagnetic component for the full high-probability sky region of LIGO triggers. Our upper limits on the hard X-ray fluence at the time of the event range from erg cm −2 to erg cm −2 in the 75 keV–2 MeV energy range for typical spectral models. Our results constrain the ratio of the energy promptly released in gamma-rays in the direction of the observer to the gravitational wave energy E E . We discuss the implication of gamma-ray limits for the characteristics of the gravitational wave source, based on the available predictions for prompt electromagnetic emission.