通過引力波數據分析來搜索緻密星
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Date
2020
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The detection of the gravitational-wave is a novel way to explore the universe. Along with increasing sensitivity of the detectors, it is possible that LIGO/VIRGO/KAGRA will observe more compact stars in the future. The compact stars include black holes, neutron stars, exotic stars etc. More and more gravitational-wave events can help people to figure out the properties of compact stars. In this thesis, we try to search the dark stars from the O1/O2 events, and performed the parameter estimation with tidal signature. When the properties of the one source is similar with the black hole, but it has the tidal deformability and match the dark matter EoSs. We can suppose this source that could be a dark star. However, we compare the tidal/non-tidal Bayes factor for the gravitational-wave events, only GW170817 has the tidal deformability. In addition, we propose three scenarios of the compact hybrid stars, and explore their M-R and M-Λ relations. We try to explain this GW190425 event through three scenarios of the hybrid stars. We find the free parameter region of the hybrid stars through the inference results of GW190425.
The detection of the gravitational-wave is a novel way to explore the universe. Along with increasing sensitivity of the detectors, it is possible that LIGO/VIRGO/KAGRA will observe more compact stars in the future. The compact stars include black holes, neutron stars, exotic stars etc. More and more gravitational-wave events can help people to figure out the properties of compact stars. In this thesis, we try to search the dark stars from the O1/O2 events, and performed the parameter estimation with tidal signature. When the properties of the one source is similar with the black hole, but it has the tidal deformability and match the dark matter EoSs. We can suppose this source that could be a dark star. However, we compare the tidal/non-tidal Bayes factor for the gravitational-wave events, only GW170817 has the tidal deformability. In addition, we propose three scenarios of the compact hybrid stars, and explore their M-R and M-Λ relations. We try to explain this GW190425 event through three scenarios of the hybrid stars. We find the free parameter region of the hybrid stars through the inference results of GW190425.
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重力波, 引力波, 參數估計, 緻密星, 中子星, 暗星, 潮汐變形性, compact stars, PyCBC inference, Tidal deformability, Equation of State