中等质量黑洞对白矮星的潮汐破坏和点火
Tidal disruption and ignition of white dwarfs by moderately massive black holes
摘要：
本文对中等质量黑洞对白矮星的潮汐破坏进行了数值研究，特别是对矮星系和球状星团的中心。特别关注的是所有质量的白矮星的命运，这些白矮星接近黑洞，足够近，被破坏和严重压缩到可以触发爆炸性核燃烧的程度。气体动力学与核反应的一致建模允许对爆炸能量释放的现实确定。在最有利的情况下，核能的释放可能与典型的Ia型超新星相当。虽然爆炸会增加在双曲线轨道上逃逸的质量分数，但仍有很大一部分碎片被黑洞吞噬，导致明亮的软X射线耀斑持续约一年。如果探测到这样的瞬态信号，将是中等质量黑洞（低于$10^5 M_\odot$）存在的有力证据。
英文摘要：
We present a numerical investigation of the tidal disruption of white dwarfs by moderately massive black holes, with particular reference to the centers of dwarf galaxies and globular clusters. Special attention is given to the fate of white dwarfs of all masses that approach the black hole close enough to be disrupted and severely compressed to such extent that explosive nuclear burning can be triggered. Consistent modeling of the gas dynamics together with the nuclear reactions allows for a realistic determination of the explosive energy release. In the most favorable cases, the nuclear energy release may be comparable to that of typical type Ia supernovae. Although the explosion will increase the mass fraction escaping on hyperbolic orbits, a good fraction of the debris remains to be swallowed by the hole, causing a bright soft X-ray flare lasting for about a year. Such transient signatures, if detected, would be a compelling testimony for the presence of a moderately mass black hole (below $10^5 M_\odot$).
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。
