Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011head...12.2209a&link_type=abstract
American Astronomical Society, HEAD meeting #12, #22.09
Astronomy and Astrophysics
Astronomy
Scientific paper
The current paradigm of black hole--galaxy co-evolution is driven in part by theoretical models of hierarchical galaxy formation. The observed correlations between BH mass and bulge properties of host galaxies are naturally explained by these merger-driven models. Recent developments, however, question all aspects of the current paradigm, and here I list some of them in which X-ray observations with Chandra and XMM played an important role. (1) We found significant outliers to the BH--bulge relations. (2) We found supermassive BHs in bulge-less galaxies. (3) The feedback is observed to be several orders of magnitude below what is required, except in most luminous quasars. (4) While the correlation between AGN luminosity and star formation rate at high redshift appears to support the current paradigm, new observations with Herschel show this to be a selection effect; the correlation disappears when lower luminosity AGNs are included; we found a similar lack of correlation in the low-redshift sample of SINGS galaxies. I will discuss these observations and ague for an alternative, secular track of AGN--galaxy evolution.
Araya Claudia
Mathur Savita
No associations
LandOfFree
AGN-galaxy Co-evolution: Making a Case for Paradigm Change does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with AGN-galaxy Co-evolution: Making a Case for Paradigm Change, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and AGN-galaxy Co-evolution: Making a Case for Paradigm Change will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1403095