Jun 23 – 25, 2025
CIEMAT (Madrid, Spain)
Europe/Madrid timezone

Upgrading ROXAS: a spectral code for rotating neutron star oscillations

Jun 25, 2025, 2:20 PM
20m
Auditorium (CIEMAT (Madrid, Spain))

Auditorium

CIEMAT (Madrid, Spain)

Av. Complutense 40, 28040 Madrid, Spain
Theory and phenomenology Session XI

Speaker

Santiago Jaraba Gómez (Observatoire astronomique de Strasbourg - CNRS)

Description

The accurate modelling of neutron star oscillations is essential as we prepare for the next generation of gravitational-wave detectors, which will be able to probe the rich astrophysical content of post-merger signals. In this talk, I will present recent updates to ROXAS, a spectral code to numerically simulate the dynamical evolution of perturbed rotating neutron stars. ROXAS uses a well-balanced formulation of the hydrodynamical equations within the conformal flatness approximation, and extracts the emitted gravitational waves. Current work focuses on extending the code to support differentially rotating stars, a key step towards a more realistic modelling of post-merger remnants.

Primary author

Santiago Jaraba Gómez (Observatoire astronomique de Strasbourg - CNRS)

Presentation materials