伽玛暴(Gamma-Ray Burst)笔记。记录有关伽玛暴的新文章,另外也包括看的老文章、自己的想法、以及跟天文相关的一些东西。 Feel free to leave me a message by comments or by email.

星期五, 十月 22, 2010

Urata 2009 GRB 071010B的余辉观测

主要内容:
这个暴不满足Amati关系和Liang-Zhang关系。

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Title:
Swift GRB GRB071010B: Outlier of the E src peak - E γ and E iso - E src peak - t src jet Correlations
Authors:
Urata, Yuji; Huang, Kuiyun; Im, Myungshin; Lee, Induk; Deng, Jinsong; Huen Ip, Wing; Krimm, Hans; Liping, Xin; Ohno, Masanori; Qiu, Yulei; Sugita, Satoshi; Tashiro, Makoto; Wei, Jianyan; Yamaoka, Kazutaka; Zheng, Weikang
Affiliation:
AA(Institute of Astronomy, National Central University, Chung-Li 32054, Taiwan ; Department of Physics, Saitama University, Shimo-Okubo, Saitama, 338-8570, Japan ; Academia Sinica Institute of Astronomy and Astrophysics, Taipei 106, Taiwan ; urata@astro.ncu.edu.tw), 
Publication:
The Astrophysical Journal Letters, Volume 706, Issue 1, pp. L183-L187 (2009). (ApJL Homepage)
Publication Date:
11/2009
Origin:
IOP
ApJ Keywords:
gamma rays: bursts, gamma rays: observations
DOI:
10.1088/0004-637X/706/1/L183
Bibliographic Code:
2009ApJ...706L.183U

Abstract

We present multi-band results for GRB071010B based on Swift, Suzaku, and ground-based optical observations. This burst is an ideal target to evaluate the robustness of the E src peak - E iso and E src peak - E γ relations, whose studies have been in stagnation due to the lack of the combined estimation of E src peak and long-term optical monitoring. The joint prompt spectral fitting using Swift/Burst Alert Telescope and Suzaku/Wide-band All-sky Monitor data yielded the spectral peak energy as E src peak of 86.5+6.4 -6.3 keV and E iso of 2.25+0.19 -0.16 × 1052 erg with z = 0.947. The optical afterglow light curve is well fitted by a simple power law with temporal index α = -0.60 ± 0.02. The lower limit of temporal break in the optical light curve is 9.8 days. Our multi-wavelength analysis reveals that GRB071010B follows E src peak - E iso but violates the E src peak - E γ and E iso - E src peak - t src jet at more than the 3σ level.
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