Augusto 2009 和伽玛暴成协的一些GeV muon辐射

主要内容:
此文介绍了两个事例. 说在4 sigma的置信度上是存在的

奇怪的是此人有好多篇关于与伽玛暴成协的muon文章, 但是要么只在astroph上出现, 要么只在prd上出现. 没有ApJ等的文章.
如在ads上搜索的结果: results of Augusto


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Title:		Search for the GeV counterparts of two gamma ray bursts: Swift 317662 and Fermi bn081017474
Authors:		Augusto, C. R. A.; Navia, C. E.; Robba, M. B.; Tsui, K. H.
Affiliation:		AA(Instituto de Física, Universidade Federal Fluminense, 24210-346, Niterói, RJ, Brazil), AB(Instituto de Física, Universidade Federal Fluminense, 24210-346, Niterói, RJ, Brazil), AC(Instituto de Física, Universidade Federal Fluminense, 24210-346, Niterói, RJ, Brazil), AD(Instituto de Física, Universidade Federal Fluminense, 24210-346, Niterói, RJ, Brazil)
Publication:		Physical Review D, vol. 78, Issue 12, id. 122001 (PhRvD Homepage)
Publication Date:		12/2008
Origin:		APS
Abstract Copyright:		(c) 2008: The American Physical Society
DOI:		10.1103/PhysRevD.78.122001
Bibliographic Code:		2008PhRvD..78l2001A

Abstract

We examine the possibility of the ground observation of the GeV counterparts of two gamma ray bursts, the Swift GRB-080723 (Trigger=317662) and the Fermi GRB081017474 (trigger=bn081017474). The data come from two small directional muon telescopes at sea level inside the South Atlantic Anomaly region. This characteristic offers the muon telescopes a low rigidity of response to primary and secondary charged particles (≥0.4GV). In both cases, the GRB trigger coordinates are within the effective field of view of the vertical Tupi muon telescopes. There is a ground level enhancement (GLE) on the muon counting rate background, with a statistical significance above 4σ, 38.22 minutes after the Swift trigger occurrence, and there are at least two GLEs, with a significance above 4σ, at 7.2 minutes and 19.2 minutes after the Fermi trigger, respectively. We argue that the GeV counterpart of a keV GRB could be similar to the highest GRBs, observed by EGRET within BATSE’s field of view, where the high-energy emission arrives at the detector in fragments, and they are delayed and/or anticipated with respect to the keV-MeV burst. This behavior is observed in both cases. In short, the analysis suggests that they may be physically associated. Details and some implications of this possible association are reported in this work.

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