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arXiv 0903.2040astro-ph.COastro-ph.HE
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X射线中暗物质衰变的探测

Detection of Dark Matter Decay in the X-ray

Kevork N. Abazajian

摘要:

人们对暗物质候选者有着相当大的兴趣,这些候选者可以通过抑制原始扰动的功率谱来减少亚星系尺度的宇宙结构,并且具有原始速度分布以在最小尺度的矮晕中产生核心。轻keV质量尺度的无菌中微子可以是这样一种“温暖”的暗物质候选者,并且在其参数空间的广泛区域中仍然是可行的候选者。我们回顾了这一候选人的地位和当前的限制,从它的辐射衰减的X射线和结构形成。我们还提供了一个预测的灵敏度的国际X射线天文台这种衰变,我们表明可能有能力检测或排除不育中微子在其完整的参数空间内的利益作为一个暗物质的候选人。

英文摘要:

There exists considerable interest in dark matter candidates that can reduce cosmological structure at sub-galactic scales through a suppression of the power spectrum of primordial perturbations as well as have a primordial velocity distribution to produce cores in the smallest-scale dwarf halos. Light keV-mass-scale sterile neutrinos can be such a "warm" dark matter candidate and are still viable candidates in broad regions of their parameter space. We review the status of this candidate and the current constraints from its radiative decay in the X-ray and from structure formation. We also provide a forecast for the sensitivity of the International X-ray Observatory to this decay, which we show may have the ability to detect or exclude sterile neutrinos within its full parameter space of interest as a dark matter candidate.

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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