LOCALIZATION OF GAMMA-RAY BURSTS USING THE FERMI GAMMA-RAY BURST MONITOR

被引：82

作者：

Connaughton, V. ^{[1
,2
]}

Briggs, M. S. ^{[1
,2
]}

Goldstein, A. ^{[3
]}

Meegan, C. A. ^{[1
]}

Paciesas, W. S. ^{[4
]}

Preece, R. D. ^{[5
]}

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

Gibby, M. H. ^{[6
]}

Greiner, J. ^{[7
]}

Gruber, D. ^{[8
]}

Jenke, P. ^{[1
]}

Kippen, R. M. ^{[9
]}

Pelassa, V. ^{[1
]}

Xiong, S. ^{[1
]}

Yu, H. -F. ^{[7
,10
]}

Bhat, P. N. ^{[1
]}

Burgess, J. M. ^{[1
]}

Byrne, D. ^{[11
]}

Fitzpatrick, G. ^{[11
]}

Foley, S. ^{[11
]}

Giles, M. M. ^{[6
]}

Guiriec, S. ^{[12
]}

Van der Horst, A. J. ^{[13
]}

Von Kienlin, A. ^{[7
]}

McBreen, S. ^{[11
]}

McGlynn, S. ^{[11
]}

Tierney, D. ^{[11
]}

Zhang, B. -B. ^{[1
]}

机构：

[1] Univ Alabama, CSPAR, Huntsville, AL 35899 USA

[2] Univ Alabama, Dept Phys, Huntsville, AL 35899 USA

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

[4] NASA, George C Marshall Space Flight Ctr, Univ Space Res Assoc, Huntsville, AL 35812 USA

[5] Univ Alabama, Dept Space Sci, Huntsville, AL 35899 USA

[6] Jacobs Technol Inc, Huntsville, AL USA

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

[8] Planetarium Sudtirol, I-39053 Karneid, Italy

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

[10] Tech Univ Munich, Excellence Cluster Universe, D-85748 Garching, Germany

[11] Univ Coll Dublin, Sch Phys, Dublin 4, Ireland

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

[13] Univ Amsterdam, Astron Inst, NL-1098 XH Amsterdam, Netherlands

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2015年 / 216卷 / 02期

基金：

爱尔兰科学基金会;

关键词：

gamma-ray burst: general; techniques: miscellaneous; SPECTRAL CATALOG; GRB; 090902B;

D O I：

10.1088/0067-0049/216/2/32

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Fermi Gamma-ray Burst Monitor (GBM) has detected over 1400 gamma-ray bursts (GRBs) since it began science operations in 2008 July. We use a subset of over 300 GRBs localized by instruments such as Swift, the Fermi Large Area Telescope, INTEGRAL, and MAXI, or through triangulations from the InterPlanetary Network, to analyze the accuracy of GBM GRB localizations. We find that the reported statistical uncertainties on GBM localizations, which can be as small as 1 degrees, underestimate the distance of the GBM positions to the true GRB locations and we attribute this to systematic uncertainties. The distribution of systematic uncertainties is well represented (68% confidence level) by a 3.degrees 7 Gaussian with a non-Gaussian tail that contains about 10% of GBM-detected GRBs and extends to approximately 14 degrees. A more complex model suggests that there is a dependence of the systematic uncertainty on the position of the GRB in spacecraft coordinates, with GRBs in the quadrants on the Y axis better localized than those on the X axis.

引用

页数：27

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