Seventeenth Marcel Grossmann Meeting

Quasi Periodic Eruptions as EMRIs counterparts

9 Jul 2024, 16:00

20m

Aula 38 (Palazzo Micara of the ‘Gabriele d’Annunzio’ University)

Invited talk in a parallel session Repeating transients in galactic nuclei: confronting observations with theory Repeating transients in galactic nuclei: confronting observations with theory

Speaker

Dr Alessia Franchini (University of Zurich)

Description

Quasi Periodic Eruptions (QPEs) are a puzzling X-ray phenomena
recently discovered in a number of sources with similar properties.
In this talk, I am going to present a theoretical model that is able
to reproduce their phenomenology in at least 4 sources. The QPEs
arise from impacts between an Extreme Mass Ratio Inspiral (EMRI)
object and a rigidly precessing TDE-like accretion disc.
Since there seems to be a hint of correlation between some of the
sources properties and TDEs host galaxy properties, modelling QPEs
might eventually improve our understanding of the TDE demographics.