Gravitational-wave versus X-ray tests of strong-field gravity

Alejandro Cárdenas-Avendaño(University of Illinois at Urbana-Champaign)

Dec 15, 2020

Electromagnetic observations of the radiation emitted by an accretion disk around a black hole, as well as gravitational-wave observations of coalescing binaries, can be used to probe strong-field gravity. In this talk, I will discuss the complementarity of these two techniques, and show how these types of analyses provide confidence towards our ability to use general relativity to predict the results of strong-field gravitational experiments. I will compare their constraining capability on theory-agnostic, parametric deviations from the Schwarzschild metric, and show how current gravitational-wave observations place more stringent constraints than electromagnetic ones.

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