Mirabal 2007 GRB 050826的观测

主要内容:
文章还有一个10小时时的X射线光度和红移之间的统计关系，貌似还比较致密。

精彩摘抄:


文章信息:
GRB 050826: A Subluminous Event at z = 0.296 Finds its Place in the Luminosity Distribution of Gamma-Ray Burst Afterglows

Authors: N. Mirabal, J. P. Halpern, P. T. O'Brien

(Submitted on 23 Apr 2007)

Abstract: We present the optical identification and spectroscopy of the host galaxy of GRB 050826 at a redshift z = 0.296 +/- 0.001. Image subtraction among observations obtained on three consecutive nights, reveals a fading object 5 hours after the burst, confirming its identification as the optical afterglow of this event. Deep imaging shows that the optical afterglow is offset by 0.4 arcseconds (~1.76 kpc) from the center of its irregular host galaxy, which is typical for long-duration gamma-ray bursts. Combining these results with X-ray measurements acquired by the Swift XRT instrument, we find that GRB 050826 falls entirely within the subluminous, subenergetic group of long gamma-ray bursts at low redshift (z <>

Comments:

Accepted for publication in ApJ

Subjects:

Astrophysics (astro-ph)

Cite as:

arXiv:0704.3069v1 [astro-ph]