论文标题
评论“多人捕获暗物质”
Comment on "Multiscatter stellar capture of dark matter"
论文作者
论文摘要
Bramante，Delgado和Martin [Phys。 Rev. D96，063002（2017）。，以下简称BDM17]以非常重要的方式扩展了暗物质（DM）的分析形式，它原则上允许使用紧凑型天体物体（例如中子星（NS）），如暗物质检测器。在此评论中，我们指出了暗物质中子散射中一个区域的存在，$（σ_{nx}）$ vs.暗物质质量$（m_ {x}）$，其中该方法的约束功率丢失了。这对应于最大温度（$ t_ {crit} $），NS必须具有作为暗物质检测器。此外，我们指出了BDM17中的几个错别字和错误，不会严重影响其结论。此外，我们为各种限制方案的任意质量的暗物质粒子的总捕获率提供了半分析近似。这些分析近似用于验证我们的数值结果。
Bramante, Delgado, and Martin [Phys. Rev. D96, 063002(2017)., hereafter BDM17] extended the analytical formalism of dark matter (DM) capture in a very important way, which allows, in principle, the use of compact astrophysical objects, such as neutron stars (NS), as dark matter detectors. In this comment, we point out the existence of a region in the dark matter neutron scattering cross section $(σ_{nX})$ vs. dark matter mass $(m_{X})$ where the constraining power of this method is lost. This corresponds to a maximal temperature ($T_{crit}$) the NS has to have, in order to serve as a dark matter detector. In addition, we point out several typos and errors in BDM17 that do not affect drastically their conclusions. Moreover, we provide semi-analytical approximations for the total capture rates of dark matter particle of arbitrary mass for various limiting regimes. Those analytical approximations are used to validate our numerical results.
