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首页> 外文期刊>Physical review, D >Gravitational waves from very massive stars collapsing to a black hole
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Gravitational waves from very massive stars collapsing to a black hole

机译：来自非常巨大的恒星的引力波坍塌到黑洞

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摘要

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 are 320 M_⊙ and ≈150 M_⊙, respectively. We find that, for the moderately rapidly rotating cases, the peak strain amplitude and the corresponding frequency of gravitational waves are ~10~(-22) and f ≈ 300-600 Hz for an event at the distance of D = 50 Mpc. Such gravitational waves will be detectable only for D ? 10 Mpc by 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 D ~ 100 Mpc. The detection of the gravitational-wave signal will provide a potential opportunity for verifying the presence of VMSs with mass ?300 M_⊙ and their pair-unstable collapse in the Universe.
机译：我们通过计算旋转的质量非常大的恒星（VMS）的核心，直接导致了轴对称数值相对论模拟黑洞的崩溃发出的引力波。进化的旋转VMS由恒星演化计算得出，其初始质量和最终碳 - 氧核心质量分别为320m_ν和≈150m_ζ。我们发现，对于中等速旋转的情况，对于D = 50MPc的距离，峰值应变幅度和重力波的相应频率是〜10〜（-22）和F≈300-600Hz。这种引力波将仅可检测到D？即使实现了这些探测器的设计灵敏度，通过第二代探测器，先进的Ligo，高级处女座和Kagra也是10 MPC，即使实现了这些探测器的设计灵敏度。然而，第三代探测器能够检测到D〜100 MPC的事件的这种引力波。引力波信号的检测将提供验证VMS的存在的潜在机会，并在宇宙中验证VMSS的存在及其对 - 不稳定的坍塌。

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