Elisa Maggio "Ringdown tests of general relativity with spin-precession"
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Europe/Rome
Sala Lauree (Marconi Building)
Sala Lauree (Marconi Building)
Sala Lauree
Description
The coalescence of black-hole binaries provides a unique arena to test general relativity in the dynamical and strong-field regime. The ringdown is the final stage of a compact binary coalescence when the remnant settles down to a stationary configuration. It is modelled as a superposition of exponentially damped sinusoids whose frequencies and damping times are related to the remnant’s oscillation frequencies, the so-called quasinormal modes. In this talk, I will present a parametrised test of general relativity that constrains deviations in the frequency and damping time of the quasinormal modes for spin-precessing binaries. Finally, I will show that neglecting spin precession can lead to a false identification of general-relativity violations even at current detector sensitivity.
