arXiv 1909.040722019-09hep-phastro-ph.HEastro-ph.SR

镜星的签名

Signatures of Mirror Stars

David Curtin, Jack Setford

备注：: 41 pages, 8 figures, 2 tables
DOI：: 10.1007/JHEP03(2020)041

摘要：

受中性自然性理论的启发，我们认为\emph{Mirror Stars}是一个通用的可能性，在任何隐藏的部门与类似的标准模型（SM）的电磁学和核物理学。我们发现，如果存在一个微小的动力学混合之间的暗光子和SM光子，镜星捕获SM物质从星际介质，积累在核心的镜星和辐射在可见光谱。这种特征与普通的白矮星相似，但在大多数情况下要比白矮星微弱得多。我们还首次表明，在存在捕获的SM物质的情况下，一部分来自镜像星核心的暗光子直接转换为SM光子，这导致了X射线信号，代表了镜像星核心属性的直接探测。这两个签名一起是一个非常独特的，吸烟枪签名的镜子明星。我们表明，镜像星可以发现在光学和X射线搜索到大约100-1000光年远，动力学混合参数的一系列良好的动机值。

英文摘要：

Motivated by theories of Neutral Naturalness, we argue that \emph{Mirror Stars} are a generic possibility in any hidden sector with analogues of Standard Model (SM) electromagnetism and nuclear physics. We show that if there exists a tiny kinetic mixing between the dark photon and the SM photon, Mirror Stars capture SM matter from the interstellar medium, which accumulates in the core of the Mirror Star and radiates in the visible spectrum. This signature is similar to, but in most cases much fainter than, ordinary white dwarfs. We also show for the first time that in the presence of captured SM matter, a fraction of dark photons from the core of the Mirror Star convert directly to SM photons, which leads to an X-ray signal that represents a direct probe of the properties of the Mirror Star core. These two signatures together are a highly distinctive, smoking gun signature of Mirror Stars. We show that Mirror Stars could be discovered in both optical and X-ray searches up to approximately 100-1000 light years away, for a range of well-motivated values of the kinetic mixing parameter.

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摘要：

英文摘要：

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