Conferències al DAA. Xarrada a càrrec de la investigadora Verónica Biffi, de l'Osservatorio Astronómico di Trieste (Itàlia). Lloc: Seminari del Departament d'Astronomia i Astrofísica, 4a planta de l'Edifici d'Investigació, a Burjassot. Dia: dimarts 1 de desembre de 2015. Hora: 12:00.
RESUM:
"Galaxy clusters: thermodynamics of the hot gas"
Galaxy clusters can be a very powerful source of information for both cosmology and astrophysics, especially if results from both numerical simulations and observations are combined.
To study clusters, the intra-cluster medium (ICM) filling their potential well is an optimal target, since it represents about 80 per cent of their visible baryonic matter and makes clusters very bright, extended X-ray sources in the Universe.
Here, I will present results from numerical simulations and from synthetic X-ray data therefrom derived, which allows for faithful comparisons between simulated and observed clusters. With this kind of studies we can in fact address a number of interesting issues, such as the reconstruction of the ICM temperature distribution via spectral analysis, the investigation of scaling relations among global properties or the characterization of the gas non-thermal velocity field.
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