论文标题
对白矮星倒塌的不对称暗物质的重新审查约束
Revisiting constraints on asymmetric dark matter from collapse in white dwarf stars
论文作者
论文摘要
白色矮人恒星内的一个小暗物质簇的失控倒塌阶段涵盖了可逆阶段，在核和暗物质之间可以来回转移热量。诱导的核燃烧阶段是稳定的，早期的碳耗竭会破坏IA型超新星点火的先前主张。取而代之的是，在恒星的中心形成迷你黑洞，该孔蒸发或增生恒星材料，直到形成宏观的亚chandrasekhar-Mass黑洞。在后一种情况下，在射出白矮人的电势磁场后，可以检测到0.1至1秒的持久电磁瞬态信号。将传输到黑洞并随后合并发射引力波的二元系统。先进的Ligo/处女座应每年检测到这样的亚chandrasekhar二进制黑洞Inspiral，而未来的爱因斯坦望远镜式设施每年将检测到数千个。有效的自旋参数分布在0.2处达到峰值，并允许将来的研究与原始亚chandrasekhar黑洞脱离。此类签名与当前直接检测约束以及在玻感暗物质的情况下与中子星的约束兼容，即使它们与一部分参数空间的费米子情况保持冲突。
The runaway collapse phase of a small dark matter cluster inside a white dwarf star encompasses a reversible stage, where heat can be transferred back and forth between nuclear and dark matter. Induced nuclear burning phases are stable and early carbon depletion undermines previous claims of type Ia supernova ignition. Instead, mini black holes are formed at the center of the star that either evaporate or accrete stellar material until a macroscopic sub-Chandrasekhar-mass black hole is formed. In the latter case, a 0.1 to 1 second lasting electromagnetic transient signal can be detected upon ejection of the white dwarf's potential magnetic field. Binary systems that transmute to black holes and subsequently merge emit gravitational waves. Advanced LIGO/Virgo should detect one such sub-Chandrasekhar binary black hole inspiral per year, while future Einstein telescope-like facilities will detect thousands per year. The effective spin parameter distribution is peaked at 0.2 and permits future studies to disentangle from primordial sub-Chandrasekhar black holes. Such signatures are compatible with current direct detection constraints, as well as with neutron star constraints in the case of bosonic dark matter, even though they remain in conflict with the fermionic case for part of the parameter space.
