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SUMMARY:Particle dynamics around a tidally deformed black hole
DTSTART:20260709T143000Z
DTEND:20260709T160000Z
DTSTAMP:20260802T010451Z
UID:f3b8b755-90d9-48bc-be46-4bb0eb4eb8a0
SEQUENCE:2
CREATED:20260706T104958Z
DESCRIPTION:The Kerr geometry provides the standard leading-order descript
 ion of isolated astrophysical black holes\, but realistic black holes are 
 generically subject to environmental perturbations. Such perturbations can
  be particularly relevant for long-lived orbital systems\, including extre
 me-mass-ratio inspirals in the presence of a nearby third body. In this ta
 lk\, I will present recent and ongoing work on particle motion around a ti
 dally deformed black hole\, with the tidal field sourced by an external co
 mpanion. In particular\, I will discuss how the integrable structure of bo
 und Kerr geodesics breaks down as the tidal-field strength increases\, the
  resulting phase-space signatures of resonant orbits\, and the phase-space
  manifestations of transient tidal resonances.
LAST-MODIFIED:20260706T105012Z
LOCATION:DF Seminar Room (2-8.3)\, 2nd floor of Physics Building
URL:http://df.vps.tecnico.ulisboa.pt/pt/eventos/particle-dynamics-around-a
 -tidally-deformed-black-hole/
X-ALT-DESC;FMTTYPE=text/html:<p data-block-key="ogjqy">The Kerr geometry p
 rovides the standard leading-order description of isolated astrophysical b
 lack holes\, but realistic black holes are generically subject to environm
 ental perturbations. Such perturbations can be particularly relevant for l
 ong-lived orbital systems\, including extreme-mass-ratio inspirals in the 
 presence of a nearby third body.<br/><br/> In this talk\, I will present r
 ecent and ongoing work on particle motion around a tidally deformed black 
 hole\, with the tidal field sourced by an external companion. In particula
 r\, I will discuss how the integrable structure of bound Kerr geodesics br
 eaks down as the tidal-field strength increases\, the resulting phase-spac
 e signatures of resonant orbits\, and the phase-space manifestations of tr
 ansient tidal resonances.</p>
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