Elbereth conference 2022

Study of the long term variability of the Very High Energy gamma-tay source at the centre of our Galaxy

24 mars 2022, 16:45

10m

Amphithéâtre & Salle des séminaires (Observatoire de Meudon)

Oral presentation Astrophysics Talk

Orateur

Samuel Zouari (APC - Université de Paris)

Description

The Galactic centre is a prime observation target for Very High Energy gamma-rays. A point-like source (possibly linked to the Supermassive Black Hole SgrA*) as well as a diffuse emission covering the central 200 pc have been discovered. With now 16 years of survey by HESS and the latest data analysis tools of gammapy, we performed a spectral and morphological study of the GC, and we monitored its flux since 2004, in search of potential variabilty. Although no such variability was found, this study allowed for a better understanding of HESS sensibility to time variations in this region.