Low significance of evidence for black hole echoes in gravitational wave data

Westerweck, Julian; Nielsen, Alex; Birnholtz, Ofek; Cabero, Miriam; Capano, Collin; Dent, Thomas; Krishnan, Badri; Meadors, Grant David; Nitz, Alexander H.

doi:10.1103/PhysRevD.97.124037

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Low significance of evidence for black hole echoes in gravitational wave data

MPG-Autoren

/persons/resource/persons216224

Westerweck, Julian
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons26313

Nielsen, Alex
Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons206560

Birnholtz, Ofek
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons206564

Cabero, Miriam
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons192149

Capano, Collin
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons104895

Dent, Thomas
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons20661

Krishnan, Badri
Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons192107

Meadors, Grant David
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

/persons/resource/persons214778

Nitz, Alexander H.
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Zitation

Westerweck, J., Nielsen, A., Birnholtz, O., Cabero, M., Capano, C., Dent, T., et al. (2018). Low significance of evidence for black hole echoes in gravitational wave data. Physical Review D, 97(12): 124037. doi:10.1103/PhysRevD.97.124037.

Zitierlink: https://hdl.handle.net/21.11116/0000-0000-3D1D-D

Zusammenfassung

Recent detections of merging black holes allow observational tests of the nature of these objects. In some proposed models, non-trivial structure at or near the black hole horizon could lead to echo signals in gravitational wave data. Recently, Abedi, Dykaar and Afshordi claimed tentative evidence for repeating damped echo signals following the gravitational-wave signals of the binary black hole merger events recorded in the first observational period of the Advanced LIGO interferometers. We reanalyse the same data, addressing some of the shortcomings of their method using more background data and a modified procedure. We find a reduced statistical significance for the claims of evidence for echoes, and calculate increased p-values for the null hypothesis of signal-free noise. We conclude that their analysis does not provide significant observational evidence for the existence of Planck-scale structure at black hole horizons.