Zoltan Haiman
Columbia University (New York, Etats-Unis d'Amérique)
Salle des séminaires Évry Schatzman, Institut d'Astrophysique de Paris
|
| « The Origin and Detection of High-Redshift Supermassive Black Holes » |
|
Zoltan Haiman |
| Supermassive black holes (SMBHs) are common in local galactic nuclei, and SMBHs as massive as several billion solar masses already exist at redshift z=6. The earliest SMBHs may arise by the combination of Eddington-limited growth and mergers of stellar-mass seed BHs, left behind by the first generation of metal-free stars, or by the rapid direct collapse of gas in rare special environments where the gas can shed angular momentum and avoid fragmenting into stars. I will review these two competing scenarios, and discuss how they might be distinguishable in future observations. |
|
vendredi 24 juin 2011 - 11:00 Salle des séminaires Évry Schatzman, Institut d'Astrophysique de Paris |
| Page web du séminaire / Seminar's webpage |