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arXiv 1902.01402astro-ph.HEgr-qc
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用天基引力波探测器测量双星径向速度

Binary radial velocity measurements with space-based gravitational-wave detectors

Kaze W. K. Wong, Vishal Baibhav, Emanuele Berti

摘要:

与传统的电磁测量不同,引力波观测不受拥挤和消光的影响。由于这个原因,围绕大质量黑洞运行的致密天体双星可以用作传统天文测量无法到达的区域的黑洞内部环境的探测器。双星系统的重心在大质量黑洞周围的轨道将导致引力波的多普勒频移,这在原则上可以通过未来的空间引力波干涉仪测量,例如激光干涉仪空间天线(LISA)。我们调查的条件下,这些多普勒频移是可观察的LISA。我们的研究结果表明,多普勒频移观测可以用来研究银河系中球状星团的中心区域,以及河外大质量黑洞的中心环境。

英文摘要:

Unlike traditional electromagnetic measurements, gravitational-wave observations are not affected by crowding and extinction. For this reason, compact object binaries orbiting around a massive black hole can be used as probes of the inner environment of the black hole in regions inaccessible to traditional astronomical measurements. The orbit of the binary's barycenter around the massive black hole will cause a Doppler shift in the gravitational waveform which is in principle measurable by future space-based gravitational-wave interferometers, such as the Laser Interferometer Space Antenna (LISA). We investigate the conditions under which these Doppler shifts are observable by LISA. Our results imply that Doppler shift observations can be used to study the central region of globular clusters in the Milky Way, as well the central environment of extragalactic massive black holes.

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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