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Fermi-LAT Observations of LIGO/Virgo Event GW170817
Clemson Univ, Dept Phys & Astron, Kinard Lab Phys, Clemson, SC 29634 USA..
Stanford Univ, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA.;Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA.;Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy.;Univ Torino, Dipartimento Fis, I-10125 Turin, Italy.;Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA..
KTH, School of Engineering Sciences (SCI), Physics. Tokyo Metropolitan Univ, Dept Phys, Minami Osawa 1-1, Hachioji, Tokyo 1920397, Japan..ORCID iD: 0000-0003-4378-8785
Univ Pisa, I-56127 Pisa, Italy.;Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy..
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2018 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 861, no 2, article id 88Article in journal (Refereed) Published
Abstract [en]

We present the Fermi Large Area Telescope (LAT) observations of the binary neutron star merger event GW170817 and the associated short gamma-ray burst (SGRB) GRB 170817A detected by the Fermi Gamma-ray Burst Monitor. The LAT was entering the South Atlantic Anomaly at the time of the LIGO/Virgo trigger (t(GW)) and therefore cannot place constraints on the existence of high-energy (E > 100 MeV) emission associated with the moment of binary coalescence. We focus instead on constraining high-energy emission on longer timescales. No candidate electromagnetic counterpart was detected by the LAT on timescales of minutes, hours, or days after the LIGO/Virgo detection. The resulting flux upper bound (at 95% C. L.) from the LAT is 4.5. x. 10(-10) erg cm(-2) s(-1) in the 0.1-1 GeV range covering a period from tGW. +. 1153 s to t(GW). +. 2027 s. At the distance of GRB 170817A, this flux upper bound corresponds to a luminosity upper bound of 9.7. x. 10(43) erg s(-1), which is five orders of magnitude less luminous than the only other LAT SGRB with known redshift, GRB 090510. We also discuss the prospects for LAT detection of electromagnetic counterparts to future gravitational-wave events from Advanced LIGO/Virgo in the context of GW170817/GRB 170817A.

Place, publisher, year, edition, pages
Institute of Physics (IOP), 2018. Vol. 861, no 2, article id 88
Keywords [en]
gamma-ray burst: general, gamma rays: general, gravitational waves
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-232611DOI: 10.3847/1538-4357/aac515ISI: 000437822700010Scopus ID: 2-s2.0-85050685077OAI: oai:DiVA.org:kth-232611DiVA, id: diva2:1236290
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QC 20180801

Available from: 2018-08-01 Created: 2018-08-01 Last updated: 2018-10-16Bibliographically approved

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Axelsson, MagnusRyde, Felix

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