Localization and Broadband Follow-Up of the Gravitational-Wave Transient GW150914

B. P. Abbott, R. Abbott, T. D. Abbott, M. R. Abernathy, F. Acernese, K. Ackley, C. Adams, T. Adams, P. Addesso, R. X. Adhikari, Søren Brandt, D. Perley, J. Hjorth, J. P. U. Fynbo, D. Malesani, B. Milvang-Jensen, D. Watson, Antonio de Ugarte Postigo

    Research output: Contribution to journalJournal articleResearchpeer-review

    463 Downloads (Pure)


    A gravitational-wave (GW) transient was identified in data recorded by the Advanced Laser InterferometerGravitational-wave Observatory (LIGO) detectors on 2015 September 14. The event, initially designated G184098and later given the name GW150914, is described in detail elsewhere. By prior arrangement, preliminary estimatesof 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 wedescribe the low-latency analysis of the GW data and present the sky localization of the first observed compactbinary merger. We summarize the follow-up observations reported by 25 teams via private Gamma-rayCoordinates Network circulars, giving an overview of the participating facilities, the GW sky localizationcoverage, 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 broadbandcampaign to search for a counterpart of an Advanced LIGO source represents a milestone and highlights the broadcapabilities of the transient astronomy community and the observing strategies that have been developed to pursueneutron star binary merger events. Detailed investigations of the EM data and results of the EM follow-upcampaign are being disseminated in papers by the individual teams.
    Original languageEnglish
    Article numberL13
    JournalThe Astrophysical Journal Letters
    Issue number1
    Number of pages8
    Publication statusPublished - 2016

    Bibliographical note

    Free article;
    See the Supplement, Abbott et al. 2016b, for the full list of authors


    • Gravitational waves
    • Methods: observational


    Dive into the research topics of 'Localization and Broadband Follow-Up of the Gravitational-Wave Transient GW150914'. Together they form a unique fingerprint.

    Cite this