Core collapse in massive scalar-tensor gravity
Core collapse in massive scalar-tensor gravity
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DOI：
10.1103/physrevd.102.044010
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发表时间：
2020-05
影响因子：
5
通讯作者：
Roxana Rosca-Mead;U. Sperhake;C. Moore;M. Agathos;D. Gerosa;C. Ott
中科院分区：
文献类型：
--
作者：
Roxana Rosca-Mead;U. Sperhake;C. Moore;M. Agathos;D. Gerosa;C. Ott
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。119，201103]。我们系统地探讨了参数空间的祖星，状态方程和标量张量理论的核心崩溃事件的特点。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：弱标度化的中子星星，强标度化的中子星星，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，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。
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. 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.