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.

星期一, 九月 10, 2007

Bastieri 2007 MAGIC还没有观测到伽玛暴的高能事件

主要内容:
MAGIC是一个Cherenkov望远镜。不过它只能是在GCN报道了暴的存在之后,所以应该是余辉阶段的高能辐射没有被观测到。

(它为什么不自己观测伽玛暴呢?可能暴本身阶段超高能的辐射也还是很弱。)

精彩摘抄:


文章信息:

arXiv:0709.1380 [ps, pdf, other]
Title: Observation of GRBs by the MAGIC Telescope, Status and Outlook
Comments: Contribution to the 30th ICRC, Merida Mexico, July 2007 on behalf of the MAGIC Collaboration
Subjects: Astrophysics (astro-ph)

Observation of Gamma Ray Bursts (GRBs) in the Very High Energy (VHE) domain will provide important information on the physical conditions in GRB outflows. The MAGIC telescope is the best suited Imaging Atmospheric Cherenkov Telescope (IACT) for these observations. Thanks to its fast repositioning time and low energy threshold, MAGIC is able to start quickly the follow-up observation, triggered by an alert from the GRB Coordinates Network (GCN), and observe the prompt emission and early afterglow phase from GRBs. In the last two years of operation several GRB follow-up observations were performed by MAGIC, however, until now without successful detection of VHE gamma rays above threshold energies >100 GeV. In this paper we revise the expectations for the GRB observations with MAGIC, based on the experience from the last years of operation.

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