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SUMMARY:Chiara Anselmo: "Probing black hole spin precession from the ringd
 own"
DTSTART:20260318T120000Z
DTEND:20260318T130000Z
DTSTAMP:20260506T021800Z
UID:indico-event-51410@agenda.infn.it
CONTACT:c.anselmo@campus.unimib.it
DESCRIPTION:At the final stage of a binary black hole coalescence\, known 
 as the ringdown\, the merged remnant emits gravitational waves as it relax
 es toward a stationary Kerr black hole. Far from the merger\, the signal c
 an be described as a superposition of quasi-normal modes\, whose frequenci
 es depend only on the remnant’s mass and spin\, while their amplitudes e
 ncode information about the progenitor binary.In this talk\, I will presen
 t recent work on the first implementation of a ringdown amplitude model th
 at incorporates spin-induced precession\, and its application to a re-anal
 ysis of GW190521— a short\, merger-dominated event with competing interp
 retations— using a simulation-based inference framework tailored to ring
 down signals.Comparing non-precessing and precessing analyses\, we find mo
 dest but systematic shifts in the inferred remnant properties and in the a
 mplitudes of subdominant modes. For this event\, however\, the ringdown al
 one does not provide compelling evidence for spin precession.Our results d
 emonstrate the feasibility of precessing\, physics-informed ringdown model
 ing and highlight the potential of the ringdown as a clean probe of black 
 hole spin dynamics.\n\nhttps://agenda.infn.it/event/51410/
LOCATION:Marconi Sala Lauree
URL:https://agenda.infn.it/event/51410/
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