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:20260810T234931Z UID:e25d9edb-66b4-4ac3-ba72-062e3ab8b3aa SEQUENCE:1 CREATED:20260608T081936Z DESCRIPTION: Compact binaries with large mass asymmetries - such as Extrem e and Intermediate Mass Ratio Inspirals - are unique probes of the astroph ysical environments in which they evolve. Their long-lived and intricate d ynamics allow for precise inference of source properties\, provided wavefo rm models are accurate enough to capture the full complexity of their orbi tal evolution. In this talk\, I will discuss a formalism we developed\, in spired by vacuum perturbation theory\, to model asymmetric binaries embedd ed 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 pert urbations can be cast into wave equations closely related to those of the vacuum case. This framework offers a practical approach to modeling the dy namics and the gravitational wave emission from binaries in realistic matt er distributions\, and can be modularly integrated with existing results f or vacuum sources. LAST-MODIFIED:20260608T081936Z LOCATION:DF Seminar Room (2-8.3)\, 2nd floor of Physics Building URL:http://df.vps.tecnico.ulisboa.pt/en/events/a-multi-parameter-expansion -for-the-evolution-of-asymmetric-binaries-in-astrophysical-environments/ X-ALT-DESC;FMTTYPE=text/html:

Compact binaries w ith large mass asymmetries - such as Extreme and Intermediate Mass Ratio I nspirals - are unique probes of the astrophysical environments in which th ey evolve. Their long-lived and intricate dynamics allow for precise infer ence of source properties\, provided waveform models are accurate enough t o capture the full complexity of their orbital evolution.

In thi s talk\, I will discuss a formalism we developed\, inspired by vacuum pert urbation theory\, to model asymmetric binaries embedded in general matter distributions. In the regime of small deviations from the Schwarzschild me tric\, relevant to most astrophysical scenarios\, the system admits a simp lified 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 the gravitational wave emission from binaries in realistic matter distribu tions\, and can be modularly integrated with existing results for vacuum s ources.

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