BEGIN:VCALENDAR VERSION:2.0 PRODID:-//linuxsoftware.nz//NONSGML Joyous v1.4//EN BEGIN:VEVENT SUMMARY:A multi-parameter expansion for the evolution of asymmetric binari es in astrophysical environments DTSTART:20260611T143000Z DTEND:20260611T160000Z DTSTAMP:20260803T115009Z UID:e25d9edb-66b4-4ac3-ba72-062e3ab8b3aa SEQUENCE:2 CREATED:20260608T081946Z DESCRIPTION:Compact binaries with large mass asymmetries - such as Extreme and Intermediate Mass Ratio Inspirals - are unique probes of the astrophy sical environments in which they evolve. Their long-lived and intricate dy namics allow for precise inference of source properties\, provided wavefor m models are accurate enough to capture the full complexity of their orbit al evolution. In this talk\, I will discuss a formalism we developed\, ins pired by vacuum perturbation theory\, to model asymmetric binaries embedde d in general matter distributions. In the regime of small deviations from the Schwarzschild metric\, relevant to most astrophysical scenarios\, the system admits a simplified description\, where both metric and fluid pertu rbations can be cast into wave equations closely related to those of the v acuum case. This framework offers a practical approach to modeling the dyn amics and the gravitational wave emission from binaries in realistic matte r distributions\, and can be modularly integrated with existing results fo r vacuum sources. LAST-MODIFIED:20260608T081956Z LOCATION:DF Seminar Room (2-8.3)\, 2nd floor of Physics Building URL:http://df.vps.tecnico.ulisboa.pt/pt/eventos/a-multi-parameter-expansio n-for-the-evolution-of-asymmetric-binaries-in-astrophysical-environments/ X-ALT-DESC;FMTTYPE=text/html:

Compact binaries wi th large mass asymmetries - such as Extreme and Intermediate Mass Ratio In spirals - are unique probes of the astrophysical environments in which the y evolve. Their long-lived and intricate dynamics allow for precise infere nce of source properties\, provided waveform models are accurate enough to capture the full complexity of their orbital evolution.

In this talk\, I will discuss a formalism we developed\, inspired by vacuum pertu rbation theory\, to model asymmetric binaries embedded in general matter d istributions. In the regime of small deviations from the Schwarzschild met ric\, relevant to most astrophysical scenarios\, the system admits a simpl ified description\, where both metric and fluid perturbations can be cast into wave equations closely related to those of the vacuum case.

This framework offers a practical approach to modeling the dynamics and t he gravitational wave emission from binaries in realistic matter distribut ions\, and can be modularly integrated with existing results for vacuum so urces.

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