Theory-agnostic searches of non-gravitational modes in the ringdown
Francesco Crescimbeni
TL;DR
This paper introduces a theory-agnostic framework for detecting non-gravitational modes in black hole merger ringdowns, aiming to identify deviations from General Relativity without relying on specific alternative theories.
Contribution
It develops a novel, model-independent method to search for extra modes in gravitational wave data, applicable to current and future observations.
Findings
No significant evidence for extra modes in analyzed events
Framework successfully applied to multiple GW events
Provides a new tool for testing gravity theories
Abstract
We present a theory-agnostic framework to search for extra-fundamental modes in the ringdown phase of black hole mergers. These modes, distinct from standard General Relativity (GR) deviations, originate from modifications of the theory of gravity. Applying our method to the events GW150914, GW190521, and GW200129, we find no significant evidence for extra modes beyond those expected in GR.
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