Gravitational-wave bursts from the nuclei of distant galaxies and quasars: proposal for detection using Doppler tracking of interplanetary spacecraft
Gravitational-wave bursts from the nuclei of distant galaxies and quasars: proposal for detection using Doppler tracking of interplanetary spacecraft
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DOI：
10.1086/182042
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发表时间：
1976-02
期刊：
影响因子：
--
通讯作者：
K. Thorne;V. Braginskii
中科院分区：
文献类型：
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作者：
K. Thorne;V. Braginskii
有人认为，形成可能存在于许多类星体和星系核中的超大质量黑洞的坍塌，以及这些黑洞之间的碰撞，应该会产生强烈的宽带引力波爆发。根据目前的哈勃膨胀率、宇宙的当前减速参数、红移z=2.5(假设大多数爆发是在该红移处产生的)、爆发所在的中心的当前数密度、每个中心在其活跃生命期间产生的平均爆发数以及光速来分析地球上这种引力波爆发之间的平均时间。分析表明，对于爆发之间的时间来说，从一周到300年的范围是合理的，尽管人们承认几乎没有任何爆发也是合理的。推导了这些爆发的预期特征，结果表明，对这些爆发最好的探测器可能是对一个或多个行星际航天器的多普勒跟踪。
It is argued that the collapse which forms the supermassive black holes that are likely to exist in the nuclei of many quasars and galaxies, and collisions between those holes, should produce strong broadband bursts of gravitational waves. The mean time between such gravitational-wave bursts at earth is analyzed in terms of the present Hubble expansion rate, the present deceleration parameter of the universe, the redshift z = 2.5 (at which most of the bursts are assumed to have been generated), the present number density of 'centers' where the bursts originated, the mean number of bursts generated in each center during its active life, and the speed of light. The analysis shows that the range from one week to 300 years is reasonable for the time between bursts, although it is admitted that hardly any bursts at all is also reasonable. Expected characteristics of the bursts are deduced, and it is shown that the best detector for these bursts will probably be Doppler tracking of one or more interplanetary spacecraft.