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arXiv 2005.09728gr-qcastro-ph.HE
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大质量标量张量引力中的核坍缩

Core collapse in massive scalar-tensor gravity

Roxana Rosca-Mead, Ulrich Sperhake, Christopher J. Moore, Michalis Agathos, Davide Gerosa, Christian D. Ott

摘要:

本文对[Phys. Rev. Lett.]中关于质量标量张量引力中恒星坍缩的逆啁啾引力波信号进行了扩展研究。{ \bf 119},201103]。我们系统地探讨了表征祖星的参数空间、状态方程和核塌缩事件的标量张量理论。我们确定了一个非常简单和直接的分类方案所产生的崩溃事件。对于任何给定的一组参数,坍缩导致三种最终状态之一,弱标量化的中子星,强标量化的中子星或黑洞,可能在多个阶段形成。后两种终态可能导致强引力波信号,在目前的地面探测器连续波搜索中可能可以探测到。我们在参数空间中确定了一个非常尖锐的边界,它将具有强引力波发射的事件与具有可忽略辐射的事件分开。

英文摘要:

This paper provides an extended exploration of the inverse-chirp gravitational-wave signals from stellar collapse in massive scalar-tensor gravity reported in [Phys. Rev. Lett. {\bf 119}, 201103]. We systematically explore the parameter space that characterizes the progenitor stars, the equation of state and the scalar-tensor theory of the core collapse events. We identify a remarkably simple and straightforward classification scheme of the resulting collapse events. For any given set of parameters, the collapse leads to one of three end states, a weakly scalarized neutron star, a strongly scalarized neutron star or a black hole, possibly formed in multiple stages. The latter two end states can lead to strong gravitational-wave signals that may be detectable in present continuous-wave searches with ground-based detectors. We identify a very sharp boundary in the parameter space that separates events with strong gravitational-wave emission from those with negligible radiation.

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。

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