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arXiv 1802.03326astro-ph.HE
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银河系中心gamma-ray过剩与费米泡

Galactic center gamma-ray excess and the Fermi bubbles

Dmitry Malyshev

摘要:

银河系中心(GC)被认为是可能的暗物质(DM)湮灭信号的最亮源。有几个小组已经探测到了过量的伽马射线发射。DM和更传统的天体物理学解释的过剩已经提出。在这份报告中,我们讨论了可能的影响,在低纬度的费米泡上的GC过剩建模。我们认为在低纬度的费米泡的模板,通过假设在低纬度的1 GeV和10 GeV之间的频谱是相同的,在高纬度。我们认为,费米泡附近的GC的存在可能有显着的影响,特别是在10 GeV以上的能量的GC过剩的光谱。

英文摘要:

Galactic center (GC) is expected to be the brightest source of possible dark matter (DM) annihilation signal. Excess gamma-ray emission has been detected by several groups. Both DM and more conventional astrophysical explanations of the excess have been proposed. In this report, we discuss possible effects of modeling the Fermi bubbles at low latitudes on the GC excess. We consider a template of the Fermi bubbles at low latitudes derived by assuming that the spectrum between 1 GeV and 10 GeV at low latitudes is the same as at high latitudes. We argue that the presence of the Fermi bubbles near the GC may have a significant influence on the spectrum of the GC excess, especially at energies above 10 GeV.

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