Numerical-relativity simulation for tidal disruption of white dwarfs by a supermassive black hole

被引：2
|
作者：
Lam, Alan Tsz-Lok [1 ]
Shibata, Masaru [1 ,2 ]
Kiuchi, Kenta [1 ,2 ]
机构：
[1] Albert Einstein Inst, Max Planck Inst Gravitat Phys, Muhlenberg 1, D-14476 Potsdam, Germany
[2] Kyoto Univ, Yukawa Inst Theoret Phys, Ctr Gravitat & Quantum Informat Phys, Kyoto 6068502, Japan
来源：
PHYSICAL REVIEW D | 2023年 / 107卷 / 04期
关键词：
GRAVITATIONAL-WAVES; STARS; STELLAR; ACCRETION; ENERGY; ENCOUNTERS; EXTRACTION; DEPENDENCE; EVOLUTION; TRANSPORT;
D O I：
10.1103/PhysRevD.107.043033
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study tidal disruption of white dwarfs in elliptic orbits with the eccentricity of-1/3-2/3 by a nonspinning supermassive black hole of mass MBH = 105M0 in fully general relativistic simulations targeting the extreme mass-ratio inspiral leading eventually to tidal disruption. Numerical-relativity simulations are performed by employing a suitable formulation in which the weak self-gravity of white dwarfs is accurately solved. We reconfirm that tidal disruption occurs for white dwarfs of the typical mass of-0.6M0 and radius c.-.,1.2 x 104 km near the marginally bound orbit around a nonspinning black hole with MBH less than or similar to 4 x 105M0.
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页数：12
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