Localization and broadband follow-up of the gravitational-wave transient GW150914

B. P. Abbott, S. Jawahar, N.A. Lockerbie, K.V. Tokmakov, LIGO Scientific Collaboration and Virgo Collaboration

Research output: Contribution to journalArticle

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Abstract

A gravitational-wave (GW) transient was identified in data recorded by the Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) detectors on 2015 September 14. The event, initially designated G184098 and later given the name GW150914, is described in detail elsewhere. By prior arrangement, preliminary estimates of the time, significance, and sky location of the event were shared with 63 teams of observers covering radio, optical, near-infrared, X-ray, and gamma-ray wavelengths with ground- and space-based facilities. In this Letter we describe the low-latency analysis of the GW data and present the sky localization of the first observed compact binary merger. We summarize the follow-up observations reported by 25 teams via private Gamma-ray Coordinates Network circulars, giving an overview of the participating facilities, the GW sky localization coverage, the timeline, and depth of the observations. As this event turned out to be a binary black hole merger, there is little expectation of a detectable electromagnetic (EM) signature. Nevertheless, this first broadband campaign to search for a counterpart of an Advanced LIGO source represents a milestone and highlights the broad capabilities of the transient astronomy community and the observing strategies that have been developed to pursue neutron star binary merger events. Detailed investigations of the EM data and results of the EM follow-up campaign are being disseminated in papers by the individual teams.
LanguageEnglish
Number of pages8
JournalAstrophysical Journal Letters
Volume826
Issue number1
DOIs
StatePublished - 20 Jul 2016

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gravitational waves
broadband
sky
LIGO (observatory)
merger
electromagnetism
interferometer
gamma rays
observatory
laser
astronomy
neutron stars
coverings
signatures
near infrared
detectors
radio
wavelength
estimates
wavelengths

Keywords

  • gravitational wave transient
  • Advanced Laser Interferometer Gravitational-wave Observatory
  • low-latency analysis
  • binary merger
  • binary black hole merger
  • electromagnetic signature

Cite this

Abbott, B. P., Jawahar, S., Lockerbie, N. A., Tokmakov, K. V., & LIGO Scientific Collaboration and Virgo Collaboration (2016). Localization and broadband follow-up of the gravitational-wave transient GW150914. Astrophysical Journal Letters, 826(1). DOI: 10.3847/2041-8205/826/1/L13
Abbott, B. P. ; Jawahar, S. ; Lockerbie, N.A. ; Tokmakov, K.V. ; LIGO Scientific Collaboration and Virgo Collaboration. / Localization and broadband follow-up of the gravitational-wave transient GW150914. In: Astrophysical Journal Letters. 2016 ; Vol. 826, No. 1.
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Abbott, BP, Jawahar, S, Lockerbie, NA, Tokmakov, KV & LIGO Scientific Collaboration and Virgo Collaboration 2016, 'Localization and broadband follow-up of the gravitational-wave transient GW150914' Astrophysical Journal Letters, vol. 826, no. 1. DOI: 10.3847/2041-8205/826/1/L13

Localization and broadband follow-up of the gravitational-wave transient GW150914. / Abbott, B. P.; Jawahar, S.; Lockerbie, N.A.; Tokmakov, K.V.; LIGO Scientific Collaboration and Virgo Collaboration.

In: Astrophysical Journal Letters, Vol. 826, No. 1, 20.07.2016.

Research output: Contribution to journalArticle

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AB - A gravitational-wave (GW) transient was identified in data recorded by the Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) detectors on 2015 September 14. The event, initially designated G184098 and later given the name GW150914, is described in detail elsewhere. By prior arrangement, preliminary estimates of the time, significance, and sky location of the event were shared with 63 teams of observers covering radio, optical, near-infrared, X-ray, and gamma-ray wavelengths with ground- and space-based facilities. In this Letter we describe the low-latency analysis of the GW data and present the sky localization of the first observed compact binary merger. We summarize the follow-up observations reported by 25 teams via private Gamma-ray Coordinates Network circulars, giving an overview of the participating facilities, the GW sky localization coverage, the timeline, and depth of the observations. As this event turned out to be a binary black hole merger, there is little expectation of a detectable electromagnetic (EM) signature. Nevertheless, this first broadband campaign to search for a counterpart of an Advanced LIGO source represents a milestone and highlights the broad capabilities of the transient astronomy community and the observing strategies that have been developed to pursue neutron star binary merger events. Detailed investigations of the EM data and results of the EM follow-up campaign are being disseminated in papers by the individual teams.

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SN - 2041-8205

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Abbott BP, Jawahar S, Lockerbie NA, Tokmakov KV, LIGO Scientific Collaboration and Virgo Collaboration. Localization and broadband follow-up of the gravitational-wave transient GW150914. Astrophysical Journal Letters. 2016 Jul 20;826(1). Available from, DOI: 10.3847/2041-8205/826/1/L13