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Tidal heating of black holes in Kerr spacetime.

机译:克尔时空中黑洞的潮汐加热。

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摘要

For any system of gravitating bodies treated beyond a point particle description, tidal effects may take part in its energetics due to the extended nature of physical bodies involved. Within the domain of Newtonian gravity, tidal forces can perform work on a celestial body which can in turn be converted into heat energy through dissipative processes. In the case of a black hole subjected to time-varying tidal forces, general relativity predicts an increase in its surface area, which in accordance with the first law of black hole thermodynamics, implies changes to its mass and angular momentum parameters. The rates of change of a small black hole's parameters as it orbits a spinning black hole of much greater mass in a circular fashion are calculated for the first time to leading order in the system's mass ratio. Applying these results to idealised astrophysical scenarios, we investigate whether these effects could have any impact on gravitational wave signals detectable by LISA [1].
机译:对于任何超出点粒子描述的引力体系统,由于所涉及物理体的扩展性质,潮汐效应可能会参与其能量。在牛顿引力的范围内,潮汐力可以在天体上执行功,而天体又可以通过耗散过程转化为热能。在黑洞受到时变潮汐力的情况下,广义相对论预测其表面积会增加,这根据黑洞热力学第一定律,意味着其质量和角动量参数会发生变化。当小黑洞以圆形方式绕着质量更大得多的旋转黑洞运行时,其参数的变化率首次被计算为系统质量比中的前导顺序。将这些结果应用到理想的天体物理情景中,我们研究了这些影响是否会对LISA可检测到的重力波信号产生任何影响[1]。

著录项

  • 作者

    Comeau, Simon.;

  • 作者单位

    University of Guelph (Canada).;

  • 授予单位 University of Guelph (Canada).;
  • 学科 Physics Astronomy and Astrophysics.;Physics Theory.
  • 学位 M.Sc.
  • 年度 2009
  • 页码 82 p.
  • 总页数 82
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 天文学;
  • 关键词

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