Δρ. Τάσσος Φράγκος
Harvard-Smithsonian Center for Astrophysics,
Institute of Theory and Computation,
Harvard University
Harvard-Smithsonian Center for Astrophysics,
Institute of Theory and Computation,
Harvard University
Ώρα 13:00 , Εργαστήριο Αστρονομίας.
Περίληψη:
High redshift galaxies permit the study of the formation and evolution of X-ray
binary populations on cosmological timescales, probing a wide range of
metallicities and star-formation rates. Here, I will present results from a large scale
population synthesis study that models the X-ray binary populations from the first
galaxies of the Universe until today. We use as input to our modeling the
Millennium II Cosmological Simulation and the updated semi-analytic galaxy
catalog by Guo et al. (2011) to self-consistently account for the star formation
history and metallicity evolution of the universe. Our modeling, which is
constrained by the observed X-ray properties of local galaxies, gives predictions
about the global scaling of emission from X-ray binary populations with properties
such as star-formation rate and stellar mass, and the evolution of these relations
with redshift, as well as the evolution of the galaxy X-ray luminosity function with
redshift. Finally, I will discuss the possible energy feedback of XRBs in the reionization
and thermal evolution of the Universe at early times.
ΥΛΙΚΟ
ΕΚΔΗΛΩΣΕΙΣ - ΔΙΑΛΕΞΕΙΣ
- Σωτήριος Βες,
Ομότιμος Καθηγητής, Τμήμα Φ...Το σεμινάριο θα μεταδοθεί σε live-streaming μέσω ΖΟΟΜ και περιλαμβάνει 2 ενότητες και θα διεξαχθε...ΔΙΑΒΑΣΤΕ - Dr Ondřej Zelenka,
Astronomical Institute, Cze...Περίληψη:Searching the data of gravitational-wave detectors for signals from compact binary merg...ΔΙΑΒΑΣΤΕ - Σωτήριος Βες,
Ομότιμος Καθηγητής, Τμήμα Φ...Το σεμινάριο θα μεταδοθεί σε live-streaming μέσω ΖΟΟΜ και περιλαμβάνει 2 ενότητες και θα διεξαχθε...ΔΙΑΒΑΣΤΕ
