arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2109.02414gr-qcastro-ph.HE
收藏

裸奇点周围的悬浮大气

Levitating atmospheres around naked singularities

Ronaldo S. S. Vieira, Włodek Kluźniak

摘要:

对于广泛的一类球对称裸奇点,存在一个球,在这个球内引力是有效排斥的。在这样的时空中,吸积物质无法到达奇点,而是会形成一个悬浮的大气层,仅由引力保持悬浮。大气的密度在一定半径处有一个极大值.在其性质上,大气层类似于最近讨论的由发光中子星上方的辐射压力支持的大气层,然而对于裸奇点周围的悬浮大气层来说,不需要存在辐射。

英文摘要:

For a wide class of spherically symmetric naked singularities there is a sphere within which gravity is effectively repulsive. In such spacetimes accreting matter cannot reach the singularity and will instead form a levitating atmosphere, which is kept suspended by gravity alone. The density of the atmosphere has a maximum at a definite radius. In its qualitative properties the atmosphere is analogous to the recently discussed atmospheres that are supported by radiation pressure above luminous neutron stars, however for the levitating atmospheres around a naked singularity no radiation need be present.

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。

↑