INTEGRAL Upper Limits on Gamma-Ray Emission Associated with the Gravitational Wave Event GW150914

Research output: Contribution to journalJournal article – Annual report year: 2016Researchpeer-review

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  • Author: Savchenko, V.

    University Paris Diderot - Paris 7, France

  • Author: Ferrigno, C.

    University of Geneva, Switzerland

  • Author: Mereghetti, S.

    National Institute for Astrophysics, Italy

  • Author: Natalucci, L.

    National Institute for Astrophysics, Italy

  • Author: Bazzano, A.

    University of Geneva, Switzerland

  • Author: Bozzo, E.

    University of Geneva, Switzerland

  • Author: Brandt, Søren

    Astrophysics, National Space Institute, Technical University of Denmark, Elektrovej, 2800, Kgs. Lyngby, Denmark

  • Author: Courvoisier, T. J. L.

    University of Geneva, Switzerland

  • Author: Diehl, R.

    Max Planck Institute for Extraterrestrial Physics, Germany

  • Author: Hanlon, L.

    University College Dublin, Ireland

  • Author: von Kienlin, A.

    Max Planck Institute for Extraterrestrial Physics, Germany

  • Author: Kuulkers, E.

    European Space Astronomy Centre, Spain

  • Author: Laurent, P

    University Paris Diderot - Paris 7, France

  • Author: Lebrun, F.

    University Paris Diderot - Paris 7, France

  • Author: Roques, J. P.

    Universite de Toulouse, France

  • Author: Ubertini, P.

    National Institute for Astrophysics, Italy

  • Author: Weidenspointner, G.

    Max Planck Institute for Extraterrestrial Physics, Germany

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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 Fγ = 2 x 10-8 erg cm-2 to Fγ = 10-6 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 Eγ/EGW <10-6. 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.
Original languageEnglish
Article numberL36
JournalThe Astrophysical Journal Letters
Volume820
Issue number2
Number of pages5
ISSN2041-8205
DOIs
Publication statusPublished - 2016
CitationsWeb of Science® Times Cited: No match on DOI

    Research areas

  • Gamma-ray burst: general, Gravitational waves

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