Gravitational waves from very massive stars collapsing to a black hole

Gravitational waves from very massive stars collapsing to a black hole
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来自大质量恒星塌缩成黑洞的引力波

DOI:
10.1103/physrevd.99.041302
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发表时间:
2019
期刊:
影响因子:
5
通讯作者:
Takashi Yoshida
Takashi Yoshida
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Haruki Uchida;Masaru Shibata;Koh Takahashi;Takashi Yoshida

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我们计算引力波的崩溃的旋转非常大质量的星星(VMS)的核心直接导致一个黑洞的轴对称数值相对论模拟。通过恒星演化计算得到了演化的旋转VMS,其初始质量和最终碳氧核质量分别为和。我们发现,对于中等快速旋转的情况,峰值应变振幅和相应的引力波频率是,对于一个事件在距离。这样的引力波将只能被第二代探测器,先进的LIGO,先进的VIRGO和KAGRA探测到,即使这些探测器达到了设计的灵敏度。然而,第三代探测器将能够探测到这样的引力波事件高达。引力波信号的探测将为验证宇宙中存在质量VMS及其对不稳定坍缩提供一个潜在的机会。
We compute gravitational waves emitted by the collapse of a rotating very massive star (VMS) core leading directly to a black hole in axisymmetric numerical-relativity simulations. The evolved rotating VMS is derived by a stellar evolution calculation, and its initial mass and the final carbon-oxygen core mass areand, respectively. We find that, for the moderately rapidly rotating cases, the peak strain amplitude and the corresponding frequency of gravitational waves areandfor an event at the distance of. Such gravitational waves will be detectable only forby second-generation detectors, advanced LIGO, advanced VIRGO, and KAGRA, even if the designed sensitivity for these detectors is achieved. However, third-generation detectors will be able to detect such gravitational waves for an event up to. The detection of the gravitational-wave signal will provide a potential opportunity for verifying the presence of VMSs with massand their pair-unstable collapse in the Universe.
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