Black Hole Spectroscopy with Coherent Mode Stacking

Huan Yang, Kent Yagi, Jonathan Blackman, Luis Lehner, Vasileios Paschalidis, Frans Pretorius, Nicolás Yunes

Research output: Contribution to journalArticle

48 Scopus citations

Abstract

The measurement of multiple ringdown modes in gravitational waves from binary black hole mergers will allow for testing the fundamental properties of black holes in general relativity and to constrain modified theories of gravity. To enhance the ability of Advanced LIGO/Virgo to perform such tasks, we propose a coherent mode stacking method to search for a chosen target mode within a collection of multiple merger events. We first rescale each signal so that the target mode in each of them has the same frequency and then sum the waveforms constructively. A crucial element to realize this coherent superposition is to make use of a priori information extracted from the inspiral-merger phase of each event. To illustrate the method, we perform a study with simulated events targeting the m=3 ringdown mode of the remnant black holes. We show that this method can significantly boost the signal-to-noise ratio of the collective target mode compared to that of the single loudest event. Using current estimates of merger rates, we show that it is likely that advanced-era detectors can measure this collective ringdown mode with one year of coincident data gathered at design sensitivity.

Original languageEnglish (US)
Article number161101
JournalPhysical review letters
Volume118
Issue number16
DOIs
StatePublished - Apr 20 2017

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Yang, H., Yagi, K., Blackman, J., Lehner, L., Paschalidis, V., Pretorius, F., & Yunes, N. (2017). Black Hole Spectroscopy with Coherent Mode Stacking. Physical review letters, 118(16), [161101]. https://doi.org/10.1103/PhysRevLett.118.161101