期刊
PHYSICAL REVIEW LETTERS
卷 118, 期 18, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.118.181103
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资金
- ARC [FT150100281, CE170100004, DP1410102578, FT160100112]
Gravitational-wave memory manifests as a permanent distortion of an idealized gravitational-wave detector and arises generically from energetic astrophysical events. For example, binary black hole mergers are expected to emit memory bursts a little more than an order of magnitude smaller in strain than the oscillatory parent waves. We introduce the concept of orphan memory: gravitational-wave memory for which there is no detectable parent signal. In particular, high-frequency gravitational-wave bursts (greater than or similar to kHz) produce orphan memory in the LIGO/Virgo band. We show that Advanced LIGO measurements can place stringent limits on the existence of high-frequency gravitational waves, effectively increasing the LIGO bandwidth by orders of magnitude. We investigate the prospects for and implications of future searches for orphan memory.
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