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Title:FERMI-LAT OBSERVATIONS OF THE LIGO EVENT GW150914
Authors:ID Zaharijas, Gabrijela (Author)
ID Fermi LAT, Collaboration (Author)
ID LIGO, Collaboration (Author), et al.
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Language:English
Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:The Fermi Large Area Telescope (LAT) has an instantaneous field of view (FoV) covering ~1 5 of the sky and it completes a survey of the entire sky in high-energy gamma-rays every 3 hr. It enables searches for transient phenomena over timescales from milliseconds to years. Among these phenomena could be electromagnetic counterparts to gravitational wave (GW) sources. In this paper, we present a detailed study of the LAT observations relevant to Laser Interferometer Gravitational-wave Observatory (LIGO) event GW150914, which is the first direct detection of gravitational waves and has been interpreted as being due to the coalescence of two stellar-mass black holes. The localization region for GW150914 was outside the LAT FoV at the time of the GW signal. However, as part of routine survey observations, the LAT observed the entire LIGO localization region within ∼70 minutes of the trigger and thus enabled a comprehensive search for a γ-ray counterpart to GW150914. The study of the LAT data presented here did not find any potential counterparts to GW150914, but it did provide limits on the presence of a transient counterpart above 100 MeV on timescales of hours to days over the entire GW150914 localization region.
Keywords:gravitational waves, gamma rays
Publication version:Version of Record
Year of publishing:2016
Number of pages:13
Numbering:823:L2
PID:20.500.12556/RUNG-2450 New window
COBISS.SI-ID:4400635 New window
DOI:doi:10.3847/2041-8205/823/1/L2 New window
NUK URN:URN:SI:UNG:REP:XMMXFP2W
Publication date in RUNG:20.06.2016
Views:5901
Downloads:0
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ZAHARIJAS, Gabrijela, FERMI LAT, Collaboration and LIGO, Collaboration, 2016, FERMI-LAT OBSERVATIONS OF THE LIGO EVENT GW150914. The Astrophysical Journal Letters [online]. 2016. Vol. 823:L2. [Accessed 7 April 2025]. DOI doi:10.3847/2041-8205/823/1/L2. Retrieved from: https://repozitorij.ung.si/IzpisGradiva.php?lang=eng&id=2450
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Record is a part of a journal

Title:The Astrophysical Journal Letters
Shortened title:Astrophys.J.L.
Publisher:American Astronomical Society
Year of publishing:2016
ISSN:0004-637X

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