ON THE FERMI-GBM EVENT 0.4 s AFTER GW150914

被引：70

作者：

Greiner, J. ^{[1
,2
]}

Burgess, J. M. ^{[3
,4
]}

Savchenko, V. ^{[5
]}

Yu, H. -F. ^{[1
,2
]}

机构：

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

[2] Tech Univ Munich, Excellence Cluster Univ, Boltzmannstr 2, D-85748 Garching, Germany

[3] Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden

[4] AlbaNova, KTH Royal Inst Technol, Dept Phys, SE-10691 Stockholm, Sweden

[5] Univ Paris Diderot, Francois Arago Ctr, Observ Paris, APC,CNRS IN2P3,CEA Irfu,Sorbonne Paris Cite, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2016年 / 827卷 / 02期

关键词：

gamma-ray burst: general; gravitational waves; methods: statistical;

D O I：

10.3847/2041-8205/827/2/L38

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In view of the recent report by Connaughton et al., we analyze continuous time-tagged event (TTE) data of Fermi-gamma-ray burst monitor (GBM) around the time of the gravitational-wave event GW150914. We find that after proper accounting for low-count statistics, the GBM transient event at 0.4 s after GW150914 is likely not due to an astrophysical source, but consistent with a background fluctuation, removing the tension between the INTEGRAL/ACS non-detection and GBM. Additionally, reanalysis of other short GRBs shows that without proper statistical modeling the fluence of faint events is over-predicted, as verified for some joint GBM-ACS detections of short GRBs. We detail the statistical procedure to correct these biases. As a result, faint short GRBs, verified by ACS detections, with significances in the broadband light curve even smaller than that of the GBM-GW150914 event are recovered as proper non-zero source, while the GBM-GW150914 event is consistent with zero fluence.

引用

页数：9

共 27 条

[1] Observation of Gravitational Waves from a Binary Black Hole Merger
Abbott, B. P.
Abbott, R.
Abbott, T. D.
Abernathy, M. R.
Acernese, F.
Ackley, K.
Adams, C.
Adams, T.
Addesso, P.
Adhikari, R. X.
Adya, V. B.
Affeldt, C.
Agathos, M.
Agatsuma, K.
Aggarwal, N.
Aguiar, O. D.
Aiello, L.
Ain, A.
Ajith, P.
Allen, B.
Allocca, A.
Altin, P. A.
Anderson, S. B.
Anderson, W. G.
Arai, K.
Arain, M. A.
Araya, M. C.
Arceneaux, C. C.
Areeda, J. S.
Arnaud, N.
Arun, K. G.
Ascenzi, S.
Ashton, G.
Ast, M.
Aston, S. M.
Astone, P.
Aufmuth, P.
Aulbert, C.
Babak, S.
Bacon, P.
Bader, M. K. M.
Baker, P. T.
Baldaccini, F.
Ballardin, G.
Ballmer, S. W.
Barayoga, J. C.
Barclay, S. E.
Barish, B. C.
Barker, D.
Barone, F.
[J]. PHYSICAL REVIEW LETTERS, 2016, 116 (06)
[2] LOCALIZATION AND BROADBAND FOLLOW-UP OF THE GRAVITATIONAL-WAVE TRANSIENT GW 150914
Abbott, B. P.
Abbott, R.
Abbott, T. D.
Abernathy, M. R.
Acernese, F.
Ackley, K.
Adams, C.
Adams, T.
Addesso, P.
Adhikari, R. X.
Adya, V. B.
Affeldt, C.
Agathos, M.
Agatsuma, K.
Aggarwal, N.
Aguiar, O. D.
Aiello, L.
Ain, A.
Ajith, P.
Allen, B.
Allocca, A.
Altin, P. A.
Anderson, S. B.
Anderson, W. G.
Arai, K.
Araya, M. C.
Arceneaux, C. C.
Areeda, J. S.
Arnaud, N.
Arun, K. G.
Ascenzi, S.
Ashton, G.
Ast, M.
Aston, S. M.
Astone, P.
Aufmuth, P.
Aulbert, C.
Babak, S.
Bacon, P.
Bader, M. K. M.
Baker, P. T.
Baldaccini, F.
Ballardin, G.
Ballmer, S. W.
Barayoga, J. C.
Barclay, S. E.
Barish, B. C.
Barker, D.
Barone, F.
Barr, B.
[J]. ASTROPHYSICAL JOURNAL LETTERS, 2016, 826 (01)
[3] Abramowitz M., 2002, Handbook of Mathematical Functions
[4] COSMIC X-RAY BACKGROUND AND EARTH ALBEDO SPECTRA WITH SWIFT BAT
Ajello, M.
Greiner, J.
Sato, G.
Willis, D. R.
Kanbach, G.
Strong, A. W.
Diehl, R.
Hasinger, G.
Gehrels, N.
Markwardt, C. B.
Tueller, J.
[J]. ASTROPHYSICAL JOURNAL, 2008, 689 (02) : 666 - 677
[5] Andrae R., 2010, arXiv
[6] [Anonymous], 2016, ARXIV160207352
[7] [Anonymous], 2016, SEABORN V070, DOI [10.5281/zenodo.45133, DOI 10.5281/ZENODO.45133]
[8] [Anonymous], XSPEC USERS GUIDE V1
[9] [Anonymous], APJS
[10] Arnaud K., 2011, Handbook of X-ray Astronomy

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