arXiv 0903.07962009-03-04astro-ph.COhep-ph

太阳周围WIMP晕的精确计算和gamma ray探测的前景

Accurate calculations of the WIMP halo around the Sun and prospects for gamma ray detection

Sofia Sivertsson, Joakim Edsjö

备注：: 5 pages, 1 figure. To appear in the proceedings of the Identification of Dark Matter conference (IDM 2008), Stockholm, Sweden, 18-22 August, 2008
发表信息：: PoS idm2008:112,2008

摘要：

弱相互作用大质量粒子（WIMP）可以被天体捕获，比如太阳。在被太阳捕获的过程中，它们将在太阳周围建立一个WIMP群体，最终将沉入太阳的核心。以前曾有人用简单的估计认为，太阳周围的这种WIMP晕可能是一个足够强的伽马射线源，可以作为WIMP暗物质的可探测特征。在这里，我们重新审视这个问题，使用详细的蒙特卡罗模拟和详细的组成和结构信息的太阳，以估计的伽马射线通量的大小。与早期的估计相比，我们发现，从弱相互作用湮没在太阳晕的伽马射线通量将是可以忽略不计的，没有当前或计划中的探测器，甚至能够检测到这个通量。

英文摘要：

Weakly interacting massive particles (WIMPs) can be captured by heavenly objects, like the Sun. Under the process of being captured by the Sun, they will build up a population of WIMPs around it, that will eventually sink to the core of the Sun. It has been argued with simpler estimates before that this halo of WIMPs around the Sun could be a strong enough gamma ray source to be a detectable signature for WIMP dark matter. We here revisit the problem using detailed Monte Carlo simulations and detailed composition and structure information about the Sun to estimate the size of the gamma ray flux. Compared to earlier estimates, we find that the gamma ray flux from WIMP annihilations in the Sun halo would be negligible and no current or planned detectors would even be able to detect this flux.

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。

摘要：

英文摘要：

相关论文