Aloisio 2008 用荧光探测器来探测伽玛暴

主要内容:
伽玛暴的0.1到100MeV的光子都可以和大气湮灭产生紫外波段的荧光，而且可探测角度比高能Cherenkov原理的要大。文章探讨用现有荧光探测器探测伽玛暴的可能性。

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文章信息:

· arXiv e-print (arXiv:0802.1650)

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Title:		Detection of GRB signals with Fluorescence Detectors
Authors:		Aloisio, R.; Boncioli, D.; Grillo, A. F.; Macolino, C.; Petrera, S.; Privitera, P.; Rizi, V.; Salamida, F.
Publication:		eprint arXiv:0802.1650
Publication Date:		02/2008
Origin:		ARXIV
Keywords:		Astrophysics
Comment:		16 pages 9 eps figures
Bibliographic Code:		2008arXiv0802.1650A

Abstract

Gamma Ray Bursts are being searched in many ground based experiments detecting the high energy component (GeV $\div$ TeV energy range) of the photon bursts. In this paper, Fluorescence Detectors are considered as possible candidate devices for these searches. It is shown that the GRB photons induce fluorescence emission of UV photons on a wide range of their spectrum. The induced fluorescence flux is dominated by GRB photons from 0.1 to about 100 MeV and, once the extinction through the atmosphere is taken into account, it is distributed over a wide angular region. This flux can be detected through a monitor of the diffuse photon flux, provided that its maximum value exceeds a threshold value, that is primarily determined by the sky brightness above the detector. The feasibility of this search and the expected rates are discussed on the basis of the current GRB observations and the existing fluorescence detectors.

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