FERMI GBM OBSERVATIONS OF LIGO GRAVITATIONAL-WAVE EVENT GW150914

被引：248

作者：

Connaughton, V. ^{[1
]}

Burns, E. ^{[2
]}

Goldstein, A. ^{[3
]}

Blackburn, L. ^{[4
,5
]}

Briggs, M. S. ^{[6
,7
]}

Zhang, B. -B. ^{[7
,8
]}

Camp, J. ^{[9
]}

Christensen, N. ^{[10
]}

Hui, C. M. ^{[3
]}

Jenke, P. ^{[7
]}

Littenberg, T. ^{[1
]}

McEnery, J. E. ^{[9
]}

Racusin, J. ^{[9
]}

Shawhan, P. ^{[11
]}

Singer, L. ^{[9
]}

Veitch, J. ^{[12
]}

Wilson-Hodge, C. A. ^{[3
]}

Bhat, P. N. ^{[7
]}

Bissaldi, E. ^{[13
,14
]}

Cleveland, W. ^{[1
]}

Fitzpatrick, G. ^{[7
]}

Giles, M. M. ^{[15
]}

Gibby, M. H. ^{[15
]}

von Kienlin, A. ^{[16
]}

Kippen, R. M. ^{[17
]}

McBreen, S. ^{[18
]}

Mailyan, B. ^{[7
]}

Meegan, C. A. ^{[7
]}

Paciesas, W. S. ^{[1
]}

Preece, R. D. ^{[6
]}

Roberts, O. J. ^{[18
]}

Sparke, L. ^{[19
]}

Stanbro, M. ^{[6
]}

Toelge, K. ^{[14
]}

Veres, P. ^{[7
]}

机构：

[1] Univ Space Res Assoc, 320 Sparkman Dr, Huntsville, AL 35806 USA

[2] Univ Alabama, Dept Phys, 320 Sparkman Dr, Huntsville, AL 35805 USA

[3] NASA, Marshall Space Flight Ctr, Astrophys Off, ZP12, Huntsville, AL 35812 USA

[4] Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA

[5] MIT, LIGO, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[6] Univ Alabama, Dept Space Sci, 320 Sparkman Dr, Huntsville, AL 35805 USA

[7] Univ Alabama, CSPAR, 320 Sparkman Dr, Huntsville, AL 35805 USA

[8] IAA CSIC, POB 03004, E-18080 Granada, Spain

[9] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[10] Carleton Coll, Phys & Astron, Northfield, MN 55057 USA

[11] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[12] Univ Birmingham, Birmingham B15 2TT, W Midlands, England

[13] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy

[14] Politecn Bari, Dipartimento Fis, I-70125 Bari, Italy

[15] Jacobs Technol Inc, Huntsville, AL USA

[16] Max Planck Inst Extraterr Phys, Giessenbachstr 1, D-85748 Garching, Germany

[17] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[18] Univ Coll Dublin, Sch Phys, Stillorgan Rd, Dublin 4, Ireland

[19] NASA Headquarters, Washington, DC USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2016年 / 826卷 / 01期

基金：

美国国家科学基金会;

关键词：

gamma-ray burst: general; gravitational waves; GAMMA-RAY BURSTS; ELECTROMAGNETIC COUNTERPARTS; MERGERS; ERA;

D O I：

10.3847/2041-8205/826/1/L6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

With an instantaneous view of 70% of the sky, the Fermi Gamma-ray Burst Monitor (GBM) is an excellent partner in the search for electromagnetic counterparts to gravitational-wave (GW) events. GBM observations at the time of the Laser Interferometer Gravitational-wave Observatory (LIGO) event GW150914 reveal the presence of a weak transient above 50 keV, 0.4 s after the GW event, with a false-alarm probability of 0.0022 (2.9 sigma). This weak transient lasting 1 s was not detected by any other instrument and does not appear to be connected with other previously known astrophysical, solar, terrestrial, or magnetospheric activity. Its localization is ill-constrained but consistent with the direction of GW150914. The duration and spectrum of the transient event are consistent with a weak short gamma-ray burst (GRB) arriving at a large angle to the direction in which Fermi was pointing where the GBM detector response is not optimal. If the GBM transient is associated with GW150914, then this electromagnetic signal from a stellar mass black hole binary merger is unexpected. We calculate a luminosity in hard X-ray emission between 1 keV and 10 MeV of 1.8(-1.0)(+1.5) x 10(49) erg s(-1). Future joint observations of GW events by LIGO/Virgo and Fermi GBM could reveal whether the weak transient reported here is a plausible counterpart to GW150914 or a chance coincidence, and will further probe the connection between compact binary mergers and short GRBs.

引用

页数：19

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