Are gravitational wave ringdown echoes always equal-interval?

被引:34
作者
Wang, Yu-Tong [1 ]
Li, Zhi-Peng [1 ]
Zhang, Jun [2 ]
Zhou, Shuang-Yong [3 ]
Piao, Yun-Song [1 ,4 ]
机构
[1] Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China
[2] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada
[3] Univ Sci & Technol China, Interdisciplinary Ctr Theoret Study, Hefei 230026, Anhui, Peoples R China
[4] Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China
来源
EUROPEAN PHYSICAL JOURNAL C | 2018年 / 78卷 / 06期
关键词
BLACK-HOLES; WORMHOLES;
D O I
10.1140/epjc/s10052-018-5974-y
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
Gravitational wave (GW) ringdown waveforms may contain "echoes" that encode new physics in the strong gravity regime. It is commonly assumed that the new physics gives rise to the GW echoes whose intervals are constant. We point out that this assumption is not always applicable. In particular, if the post-merger object is initially a wormhole, which slowly pinches off and eventually collapses into a black hole, the late-time ringdown waveform exhibit a series of echoes whose intervals are increasing with time. We also assess how this affects the ability of Advanced LIGO/Virgo to detect these new signals.
引用
收藏
页数:5
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