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arXiv 1307.6572astro-ph.HE
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第一个费米LAT SNR星表:星际辐射模型的影响

The 1st Fermi LAT SNR Catalog: the Impact of Interstellar Emission Modeling

T. J. Brandt, J. Ballet, F. de Palma, G. Johannesson, L. Tibaldo

摘要:

银河系星际辐射对银河平面上的费米LAT观测有很大的贡献,银河平面是大多数超新星遗迹(SNRs)的位置。为了探索星际发射模型对SNR特性的系统影响,我们开发了一种方法,将官方LAT星际发射模型结果与八种替代模型进行比较。我们通过改变GALPROP的一些输入参数,即宇宙射线传播晕的高度,宇宙射线源在银河系中的分布,以及原子氢的自旋温度,创建了八个备选的银河系星际模型。我们已经分析了八个代表性的SNR选择,包括一系列的银河系的位置,扩展,和光谱特性使用八个不同的星际发射模型。我们将详细介绍结果和方法,并讨论研究的影响,如第一费米LAT SNR目录。

英文摘要:

Galactic interstellar emission contributes substantially to Fermi LAT observations in the Galactic plane, the location of the majority of supernova remnants (SNRs). To explore some systematic effects on SNRs' properties caused by interstellar emission modeling, we have developed a method comparing the official LAT interstellar emission model results to eight alternative models. We created the eight alternative Galactic interstellar models by varying a few input parameters to GALPROP, namely the height of the cosmic ray propagation halo, cosmic ray source distribution in the Galaxy, and atomic hydrogen spin temperature. We have analyzed eight representative SNRs chosen to encompass a range of Galactic locations, extensions, and spectral properties using the eight different interstellar emission models. We will present the results and method in detail and discuss the implications for studies such as the 1st Fermi LAT SNR Catalog.

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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