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arXiv 0903.1852astro-ph.GAastro-ph.HE
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来自Pamela/ATIC过剩的次级辐射和费米的相关性

Secondary radiation from the Pamela/ATIC excess and relevance for Fermi

E. Borriello, A. Cuoco, G. Miele

摘要:

当e^+e^-与银河系磁场和星际辐射场(ISRF)相互作用时,帕梅拉和ATIC实验观测到的过量电子/正电子会产生大量的同步辐射和逆康普顿散射(ICS)辐射。特别是,ICS信号内产生的帕梅拉/ATIC过剩的WIMP湮灭解释已经显示出一些紧张与EGRET数据。另一方面,1年的费米数据采集将足以以高置信度排除或确认这种情况。ICS辐射产生了一种独特而干净的“ICS霾”特征,也可以用来区分天体物理和暗物质场景。这个ICS特征即使在距离银河系中心几度的地方也非常突出,因此它是一个非常可靠的预测,可以用来选择DM轮廓和ISRF中的不确定性。

英文摘要:

The excess of electrons/positrons observed by the Pamela and ATIC experiments gives rise to a noticeable amount of synchrotron and Inverse Compton Scattering (ICS) radiation when the e^+e^- interact with the Galactic Magnetic Field, and the InterStellar Radiation Field (ISRF). In particular, the ICS signal produced within the WIMP annihilation interpretation of the Pamela/ATIC excess shows already some tension with the EGRET data. On the other hand, 1 yr of Fermi data taking will be enough to rule out or confirm this scenario with a high confidence level. The ICS radiation produces a peculiar and clean "ICS Haze" feature, as well, which can be used to discriminate between the astrophysical and Dark Matter scenarios. This ICS signature is very prominent even several degrees away from the galactic center, and it is thus a very robust prediction with respect to the choice of the DM profile and the uncertainties in the ISRF.

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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