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arXiv 2301.03326astro-ph.CO
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用MeerKAT模拟暗物质的射电辐射用于新的高分辨率观测

Simulating the radio emissions of dark matter for new high-resolution observations with MeerKAT

Michael Sarkis, Geoff Beck

摘要:

最近的工作表明,对MeerKAT --以及最终的SKA --的漫射无线电发射的搜索非常适合于提供对暗物质湮灭的一些最强约束。为了充分利用这些设施的观测结果,需要对这些天体中预期的暗物质丰度和扩散机制进行精确模拟。然而,由于所涉及的计算成本,已经开发了各种数学和数值技术来以可行的方式执行计算。在这里,我们提供了文献中常用的方法之间的第一个定量比较,并概述了每一个在各种模拟场景中的适用性。随着对暗物质的搜寻进入精确射电观测的新时代,这些考虑变得越来越重要。

英文摘要:

Recent work has shown that searches for diffuse radio emission by MeerKAT - and eventually the SKA - are well suited to provide some of the strongest constraints yet on dark matter annihilations. To make full use of the observations by these facilities, accurate simulations of the expected dark matter abundance and diffusion mechanisms in these astrophysical objects are required. However, because of the computational costs involved, various mathematical and numerical techniques have been developed to perform the calculations in a feasible manner. Here we provide the first quantitative comparison between methods that are commonly used in the literature, and outline the applicability of each one in various simulation scenarios. These considerations are becoming ever more important as the hunt for dark matter continues into a new era of precision radio observations.

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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