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Multiparameter multipolar test of general relativity with gravitational waves
Parthapratim Mahapatra, Shilpa Kastha, Anuradha Gupta +2
Amplitude and phase of the gravitational waveform from compact binary systems can be decomposed in terms of their mass- and current-type multipole moments. In a modified theory of…
Parametrized multipolar gravitational waveforms for testing general relativity: Amplitude corrections up to 2PN order
Parthapratim Mahapatra, Shilpa Kastha
A parametrized multipolar gravitational wave phasing within multipolar post-Minkowskian and post-Newtonian formalism was developed in earlier works [S. Kastha et al., PRD 98, 12403…
Spectroscopy for asymmetric binary black hole mergers
Jahed Abedi, Collin D. Capano, Shilpa Kastha +5
We study Bayesian inference of black hole ringdown modes for simulated binary black hole signals. We consider to what extent different fundamental ringdown modes can be identified…
A gating-and-inpainting perspective on GW150914 ringdown overtone: understanding the data analysis systematics
Yi-Fan Wang, Collin D. Capano, Jahed Abedi +5
We revisit the recent debate on the evidence for an overtone in the black hole ringdown of GW150914 using an independent data-analysis pipeline. By gating and inpainting the data,…