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arXiv 1103.2149gr-qcastro-ph.IM
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Laser干涉仪空间天线极质量比激励的时域模拟

Time-domain modelling of Extreme-Mass-Ratio Inspirals for the Laser Interferometer Space Antenna

Priscilla Canizares, Carlos F. Sopuerta

摘要:

当一个恒星质量的致密物体被位于银河系中心的超大质量黑洞捕获时,系统会通过发射引力波损失能量和角动量。随后,恒星状致密物体螺旋式地演化,直到坠入大质量黑洞。这些EMRI系统有望成为未来天基激光干涉仪空间天线(LISA)的主要引力波源之一。然而,EMRI信号的检测将需要非常精确的理论模板,同时考虑到引力自作用力,这是恒星致密物体螺旋的原因。由于它在EMRI上的潜在应用,获得一个有效的方法来计算作用在围绕大质量黑洞轨道运行的点状粒子上的标量自作用力越来越受到人们的关注。我们在这里提出了一个审查我们的时域数值技术来计算作用在一个点状粒子的自作用力,我们表明它适合处理圆形和偏心轨道。

英文摘要:

When a stellar-mass compact object is captured by a supermassive black hole located in a galactic centre, the system losses energy and angular momentum by the emission of gravitational waves. Subsequently, the stellar compact object evolves inspiraling until plunging onto the massive black hole. These EMRI systems are expected to be one of the main sources of gravitational waves for the future space-based Laser Interferometer Space Antenna (LISA). However, the detection of EMRI signals will require of very accurate theoretical templates taking into account the gravitational self-force, which is the responsible of the stellar-compact object inspiral. Due to its potential applicability on EMRIs, the obtention of an efficient method to compute the scalar self-force acting on a point-like particle orbiting around a massive black hole is being object of increasing interest. We present here a review of our time-domain numerical technique to compute the self-force acting on a point-like particle and we show its suitability to deal with both circular and eccentric orbits.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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