The discovery of an evolving dust-scattered X-ray halo around GRB 031203

被引：74

作者：

Vaughan, S

Willingale, R

O'Brien, PT

Osborne, JP

Reeves, JN

Levan, AJ

Watson, MG

Tedds, JA

Watson, D

Santos-Lleó, M

Rodríguez-Pascual, PM

Schartel, N

机构：

[1] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England

[2] NASA, Goddard Space Flight Ctr, High Energy Astrophys Lab, Greenbelt, MD 20771 USA

[3] Univ Space Res Assoc, Columbia, MD 21044 USA

[4] Univ Copenhagen, Niels Bohr Inst Astron Phys & Geophys, DK-2100 Copenhagen O, Denmark

[5] XMM Newton SOC, E-28080 Madrid, Spain

来源：

ASTROPHYSICAL JOURNAL | 2004年 / 603卷 / 01期

基金：

美国国家航空航天局;

关键词：

dust; extinction; Galaxy : structure; gamma rays : bursts; X-rays : general;

D O I：

10.1086/382785

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the first detection of a time-dependent dust-scattered X-ray halo around a gamma-ray burst (GRB). GRB 031203 was observed by XMM-Newton starting 6 hr after the burst. The halo appeared as concentric ringlike structures centered on the GRB location. The radii of these structures increased with time as, consistent with t(1/2) small-angle X-ray scattering caused by a large column of dust along the line of sight to a cosmologically distant GRB. The rings are due to dust concentrated in two distinct slabs in the Galaxy located at distances of 880 and 1390 pc, consistent with known Galactic features. The halo brightness implies an initial soft X-ray pulse consistent with the observed GRB.

引用

页码：L5 / L8

页数：4

共 28 条

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