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Echoes from the Abyss: A Status Update

Abedi, J., & Afshordi, N. (in preparation). Echoes from the Abyss: A Status Update.

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Genre: Paper

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2001.00821.pdf (Preprint), 815KB
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### Creators

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Creators:
Abedi, Jahed1, Author
Afshordi , Niayesh, Author
Affiliations:
1Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011

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Free keywords: General Relativity and Quantum Cosmology, gr-qc,Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO, Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE
Abstract: Gravitational wave echoes provide our most direct and surprising observational window into quantum nature of black holes. Three years ago, the first search for echoes from Planck-scale modifications of general relativity near black hole event horizons led to tentative evidence at false detection probability of 1\% arXiv:1612.00266 . The study introduced a naive phenomenological model and used the public data release by the Advanced LIGO gravitational wave observatory for the first observing run O1 (GW150914, GW151226, and LVT151012, now GW151012). Here, we provide a status update on various observational searches for echoes by independent groups, and argue that they can all be consistent if echoes are most prominent at lower frequencies and/or in binary mergers of more extreme mass ratio. We also point out that the only reported "detection" of echoes (with $>4\sigma$ confidence) at 1.0 second after the binary neutron star merger GW170817 arXiv:1803.10454 is coincident with the formation time of the black hole inferred from electromagnetic observations.

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Dates: 2020-01-03
Publication Status: Not specified
Pages: 8 pages, 6 figures, comments are welcome!
Publishing info: -
Rev. Method: -
Identifiers: arXiv: 2001.00821
URI: http://arxiv.org/abs/2001.00821
Degree: -

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