William Forman
Harvard-Smithsonian Center Astroph. (CfA) (Cambridge, Massachusetts, Etats-Unis d'Amérique)
Amphithéâtre Henri Mineur, Institut d'Astrophysique de Paris
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| « Supermassive Black Holes (SMBH) at Work: The Effects of SMBH Outbursts on the Evolution of Gas Rich Galaxies, Groups, and Galaxy Clusters » |
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William Forman |
| Supermassive black holes (SMBHs) play key roles in galaxy and cluster evolution. This is most clearly seen in the "fossil record" that is imprinted in the gas rich atmospheres of early type galaxies, groups, and clusters by powerful SMBH outbursts. I will discuss the outburst history of M87 as chronicled in its radio and X-ray images and the implications of these outbursts for heating gas rich environments. In addition to discussing the outburst around M87, I will review the high spectral energy resolution results on Perseus from Hitomi, and the results of a galaxy survey that shows the effects of SMBH feedback on early type galaxies and which suggests that, at very early epochs, SMBH outbursts may have truncated star formation and altered the "normal" evolution of the stellar component of galaxy bulges. I conclude by describing future X-ray missions, including Lynx, whose sub-arcsecond angular resolution, would allow us to study the evolution of SMBHs and hot, X-ray emitting atmospheres from high redshifts to the present. |
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vendredi 6 avril 2018 - 11:00 Amphithéâtre Henri Mineur, Institut d'Astrophysique de Paris |
| Page web du séminaire / Seminar's webpage |