A Fermi Gamma-Ray Burst Monitor search for electromagnetic signals coincident with gravitational-wave candidates in Advanced LIGO's first observing run

Fermi Gamma-Ray Burst Monitor, The LIGO Scientific Collaboration, The Virgo Collaboration, E. Burns, S. V. Angelova, R. Birney, N. A. Lockerbie, Sean Macfoy, S. Reid, K. V. Tokmakov

Research output: Contribution to journalArticle

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Abstract

We present a search for prompt gamma-ray counterparts to compact binary coalescence gravitational wave (GW) candidates from Advanced LIGO's first observing run (O1). As demonstrated by the multimessenger observations of GW170817/GRB 170817A, electromagnetic and GW observations provide complementary information about the astrophysical source, and in the case of weaker candidates, may strengthen the case for an astrophysical origin. Here we investigate low-significance GW candidates from the O1 compact binary coalescence searches using the Fermi Gamma-Ray Burst Monitor (GBM), leveraging its all sky and broad energy coverage. Candidates are ranked and compared to background to measure the significance. Those with false alarm rates (FARs) of less than 10−5 Hz (about one per day, yielding a total of 81 candidates) are used as the search sample for gamma-ray follow-up. No GW candidates were found to be coincident with gamma-ray transients independently identified by blind searches of the GBM data. In addition, GW candidate event times were followed up by a separate targeted search of GBM data. Among the resulting GBM events, the two with the lowest FARs were the gamma-ray transient GW150914-GBM presented in Connaughton et al. and a solar flare in chance coincidence with a GW candidate.
LanguageEnglish
Article number90
Number of pages12
JournalAstrophysical Journal
Volume871
Issue number1
DOIs
Publication statusPublished - 24 Jan 2019

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LIGO (observatory)
gamma ray bursts
gravitational waves
monitors
electromagnetism
gamma rays
false alarms
coalescence
coalescing
astrophysics
solar flares
sky
electromagnetic radiation
energy

Keywords

  • Fermi Gamma-Ray Burst Monitor
  • electromagnetic signals
  • gravitational waves
  • LIGO
  • gravitational waveforms

Cite this

Fermi Gamma-Ray Burst Monitor, The LIGO Scientific Collaboration, The Virgo Collaboration, Burns, E., Angelova, S. V., Birney, R., ... Tokmakov, K. V. (2019). A Fermi Gamma-Ray Burst Monitor search for electromagnetic signals coincident with gravitational-wave candidates in Advanced LIGO's first observing run. Astrophysical Journal, 871(1), [90]. https://doi.org/10.3847/1538-4357/aaf726
Fermi Gamma-Ray Burst Monitor ; The LIGO Scientific Collaboration ; The Virgo Collaboration ; Burns, E. ; Angelova, S. V. ; Birney, R. ; Lockerbie, N. A. ; Macfoy, Sean ; Reid, S. ; Tokmakov, K. V. / A Fermi Gamma-Ray Burst Monitor search for electromagnetic signals coincident with gravitational-wave candidates in Advanced LIGO's first observing run. In: Astrophysical Journal. 2019 ; Vol. 871, No. 1.
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Fermi Gamma-Ray Burst Monitor, The LIGO Scientific Collaboration, The Virgo Collaboration, Burns, E, Angelova, SV, Birney, R, Lockerbie, NA, Macfoy, S, Reid, S & Tokmakov, KV 2019, 'A Fermi Gamma-Ray Burst Monitor search for electromagnetic signals coincident with gravitational-wave candidates in Advanced LIGO's first observing run' Astrophysical Journal, vol. 871, no. 1, 90. https://doi.org/10.3847/1538-4357/aaf726

A Fermi Gamma-Ray Burst Monitor search for electromagnetic signals coincident with gravitational-wave candidates in Advanced LIGO's first observing run. / Fermi Gamma-Ray Burst Monitor; The LIGO Scientific Collaboration; The Virgo Collaboration; Burns, E.; Angelova, S. V.; Birney, R.; Lockerbie, N. A.; Macfoy, Sean; Reid, S.; Tokmakov, K. V.

In: Astrophysical Journal, Vol. 871, No. 1, 90, 24.01.2019.

Research output: Contribution to journalArticle

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T1 - A Fermi Gamma-Ray Burst Monitor search for electromagnetic signals coincident with gravitational-wave candidates in Advanced LIGO's first observing run

AU - Fermi Gamma-Ray Burst Monitor

AU - The LIGO Scientific Collaboration

AU - The Virgo Collaboration

AU - Burns, E.

AU - Angelova, S. V.

AU - Birney, R.

AU - Lockerbie, N. A.

AU - Macfoy, Sean

AU - Reid, S.

AU - Tokmakov, K. V.

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N2 - We present a search for prompt gamma-ray counterparts to compact binary coalescence gravitational wave (GW) candidates from Advanced LIGO's first observing run (O1). As demonstrated by the multimessenger observations of GW170817/GRB 170817A, electromagnetic and GW observations provide complementary information about the astrophysical source, and in the case of weaker candidates, may strengthen the case for an astrophysical origin. Here we investigate low-significance GW candidates from the O1 compact binary coalescence searches using the Fermi Gamma-Ray Burst Monitor (GBM), leveraging its all sky and broad energy coverage. Candidates are ranked and compared to background to measure the significance. Those with false alarm rates (FARs) of less than 10−5 Hz (about one per day, yielding a total of 81 candidates) are used as the search sample for gamma-ray follow-up. No GW candidates were found to be coincident with gamma-ray transients independently identified by blind searches of the GBM data. In addition, GW candidate event times were followed up by a separate targeted search of GBM data. Among the resulting GBM events, the two with the lowest FARs were the gamma-ray transient GW150914-GBM presented in Connaughton et al. and a solar flare in chance coincidence with a GW candidate.

AB - We present a search for prompt gamma-ray counterparts to compact binary coalescence gravitational wave (GW) candidates from Advanced LIGO's first observing run (O1). As demonstrated by the multimessenger observations of GW170817/GRB 170817A, electromagnetic and GW observations provide complementary information about the astrophysical source, and in the case of weaker candidates, may strengthen the case for an astrophysical origin. Here we investigate low-significance GW candidates from the O1 compact binary coalescence searches using the Fermi Gamma-Ray Burst Monitor (GBM), leveraging its all sky and broad energy coverage. Candidates are ranked and compared to background to measure the significance. Those with false alarm rates (FARs) of less than 10−5 Hz (about one per day, yielding a total of 81 candidates) are used as the search sample for gamma-ray follow-up. No GW candidates were found to be coincident with gamma-ray transients independently identified by blind searches of the GBM data. In addition, GW candidate event times were followed up by a separate targeted search of GBM data. Among the resulting GBM events, the two with the lowest FARs were the gamma-ray transient GW150914-GBM presented in Connaughton et al. and a solar flare in chance coincidence with a GW candidate.

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KW - gravitational waves

KW - LIGO

KW - gravitational waveforms

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