Seminars are organized jointly by the Trieste Astronomical Observatory (INAF/OATS) and the Astronomy Unit of the Physics Dept. of the Trieste University (UNI/TS). They usually take place on Wednesdays at 11:30, in the seminar room (Sala Ovale) of Villa Bazzoni in via Bazzoni 2, TS.
Wed, APR 26 , 2017
SPEAKER : Fabrizio Fiore (INAF-OAR, Roma, IT)
TITLE: AGN wind scaling relations
ABSTRACT: Why black holes in galactic nuclei have masses proportional to bulge masses and luminosities? Why did galaxies at a certain point of their cosmological evolution, stop to form stars? What is the path(s) and the mechanism(s) leading the transition from gas rich, star-forming galaxies, to red passive galaxies, deprived of all their gas? Theory and few observations suggest that AGN driven super winds (=feedback) play a major role in all these transformations. The two main building blocks of this scenario are: 1) AGN winds, which inject energy in their environment; 2) the interaction of these flows with the galaxy interstellar matter, and its physical/chemical/geometrical modification. I will first review AGN winds seen in different gas phases and at different scales and derive AGN wind scaling relations. I will then plug these studies in the broader framework of AGN evolution and discuss the perspectives of extending these studies up to z=1-3, the golden epoch of AGN and galaxy activity.
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