期刊
EUROPEAN PHYSICAL JOURNAL C
卷 78, 期 6, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-018-5974-y
关键词
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资金
- NSFC [11575188, 11690021]
- Strategic Priority Research Program of CAS [XDB23010100]
- sixty-second batch of China Postdoctoral Fund
- starting grant of USTC
- 1000 Young Talent Program of China
- National Science and Engineering Research Council
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.
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