Probing chromatic onsets of gravitational wave overtones

Abstract

The ringdown data of both GW150914 and GW190521\_074359 (GW190521r) show evidence supporting the presence of overtone. Previous studies all adopt a fundamental assumption, which were motivated more by convenience than by first principles, that the first overtone and the fundamental mode share a same onset. In this work, for the first time we relax such assumption, and we aim to probe the possible chromatic onsets of these two components within the GW150914 and GW190521r ringdown data. For both events, we bound the onset lags to be $\Delta t_0\ge 5M_f$ at probabilities of $\ge 94.7\%$, where $M_f$ is the mass of the remnant black hole formed in the merger. This result moderately favours the non-simultaneous excitation between the fundamental mode and the first overtone in the ringdown.

arXiv comment6 pages, 3 figures, 1 table, accepted by PRD

References in corpus (24)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs
• MultiNest: an efficient and robust Bayesian inference tool for cosmology and particle physics
• GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run
• X-ray spectral modelling of the AGN obscuring region in the CDFS: Bayesian model selection and catalogue
• Bilby: A user-friendly Bayesian inference library for gravitational-wave astronomy
• Importance Nested Sampling and the MultiNest Algorithm
• Tests of General Relativity with Binary Black Holes from the second LIGO-Virgo Gravitational-Wave Transient Catalog
• The SXS Collaboration catalog of binary black hole simulations
• Black Hole Spectroscopy: Testing General Relativity through Gravitational Wave Observations
• Testing the no-hair theorem with GW150914
• Black hole ringdown: the importance of overtones
• Inspiral-merger-ringdown multipolar waveforms of nonspinning black-hole binaries using the effective-one-body formalism
• Modeling Ringdown: Beyond the Fundamental Quasi-Normal Modes
• Observational Black Hole Spectroscopy: A time-domain multimode analysis of GW150914
• Black-hole hair loss: learning about binary progenitors from ringdown signals
• Anatomy of the binary black hole recoil: A multipolar analysis
• Black-hole Spectroscopy by Making Full Use of Gravitational-Wave Modeling
• Black Hole Spectroscopy: Systematic Errors and Ringdown Energy Estimates
• Testing the black-hole area law with GW150914
• Ringdown overtones, black hole spectroscopy, and no-hair theorem tests
• On choosing the start time of binary black hole ringdown
• Modelling the Ringdown from Precessing Black Hole Binaries
• Challenges testing the no-hair theorem with gravitational waves