首页|The Precursor of GRB211211A:A Tide-induced Giant Quake?

The Precursor of GRB211211A:A Tide-induced Giant Quake?

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The equilibrium configuration of a solid strange star in the final inspiral phase with another compact object is generally discussed,and the starquake-related issue is revisited,for a special purpose to understand the precursor emission of binary compact star merger events(e.g.,that of GRB211211A).As the binary system inspirals inward due to gravitational wave radiation,the ellipticity of the solid strangeon star increases due to the growing tidal field of its compact companion.Elastic energy is hence accumulated during the inspiral stage which might trigger a starquake before the merger when the energy exceeds a critical value.The energy released during such starquakes is calculated and compared to the precursor observation of GRB211211A.The result shows that the energy might be insufficient for binary strangeon-star case unless the entire solid strangeon star shatters,and hence favors a black hole-strangeon star scenario for GRB211211A.The timescale of the precursor as well as the frequency of the observed quasi-periodic-oscillation have also been discussed in the starquake model.

stars:neutron(stars:)gamma-ray burst:generalblack hole physics

Enping Zhou、Yong Gao、Yurui Zhou、Xiaoyu Lai、Lijing Shao、Weiyang Wang、Shaolin Xiong、Renxin Xu、Shuxu Yi、Garvin Yim、Han Yue、Zhen Zhang

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School of Physics,Huazhong University of Science and Technology,Wuhan 430074,China

Kavli Institute for Astronomy and Astrophysics,Peking University,Beijing 100871,China

School of Physics,Peking University,Beijing 100871,China

Research Center for Astronomy,Hubei University of Education,Wuhan 430205,China

University of Chinese Academy of Sciences,Beijing 100049,China

Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

School of Earth and Space Sciences,Peking University,Beijing 100871,China

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National SKA Program of ChinaNational SKA Program of China国家自然科学基金国家自然科学基金国家自然科学基金Max Planck Partner Group Program funded by the Max Planck Society国家重点研发计划国家自然科学基金Young Topnotch Talent Cultivation Program of Hubei Province国家自然科学基金国家自然科学基金中国科学院项目

2020SKA012010002020SKA01203001220301711975027119910532021YFA0718500122730424217405912247180E329A3M1

2024

10.1088/1674-4527/ad0825

天文和天体物理学研究
中国科学院国家天文台

天文和天体物理学研究

CSTPCD
影响因子：0.406
ISSN：1674-4527
年,卷(期)：2024.24(2)
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