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arXiv 0706.0220astro-ph
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EGRET仪器中不可约本底的Monte Carlo研究

A Monte Carlo Study of the Irreducible Background in the EGRET Instrument

T. A. Porter, W. B. Atwood, B. Baughman, R. P. Johnson

摘要:

扩散的河外伽马射线背景(EGRB)是由不同的研究小组从康普顿伽马射线天文台(CGRO)的高能伽马射线实验望远镜(EGRET)仪器的观测中得出的。衍生的EGRB由伽马射线组成,这些伽马射线可能来自天体物理成分,例如来自未解决的河外点源(耀变体,正常星系等),真正的河外扩散发射,来自银河系和其他天体源的错误扩散信号,以及由于EGRET仪器中宇宙射线(CR)相互作用产生的伽马射线而产生的不可约的仪器背景。利用GLAST(Gamma Ray Large Area Space Telescope)模拟和重建软件,研究了GLAST大天区望远镜中不可约仪器背景的星等。我们重新调整我们的研究结果的EGRET和目前的初步结果,我们的研究及其对目前估计的EGRB的影响。

英文摘要:

The diffuse extragalactic gamma-ray background (EGRB) has been derived by various groups from observations by the Energetic Gamma Ray Experiment Telescope (EGRET) instrument on the Compton Gamma Ray Observatory (CGRO). The derived EGRB consists of gamma rays that may come from astrophysical components, such as from unresolved extragalactic point sources (blazars, normal galaxies, etc.), true extragalactic diffuse emission, misattributed diffuse signals from the Galaxy and other celestial sources, and an irreducible instrumental background due to gamma rays produced by cosmic-ray (CR) interactions in the EGRET instrument. Using the Gamma Ray Large Area Space Telescope (GLAST) simulation and reconstruction software, we have investigated the magnitude of the irreducible instrumental background in the GLAST Large Area Telescope. We re-scale our results to the EGRET and present preliminary results of our study and its effect on current estimates of the EGRB.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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