PDF (7.1 MB) - Chandra X-ray Observatory
PDF (7.1 MB) - Chandra X-ray Observatory
PDF (7.1 MB) - Chandra X-ray Observatory
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CHANDRA<br />
HANDRA (and XMM-Newton)<br />
XMM XMM-Newton) ewton) View iew of AGNs AGN AGNs<br />
• S<strong>MB</strong>H grow in "anti-hierarchical" way<br />
Most massive (10 7 .5 - 10 9 M o ) form early and feed often<br />
- More frequent mergers and more gas available at high z<br />
- High luminosity, BLAGN, & numbers peak at z ~2.5<br />
More moderate (10 6 -10 7 .5 M o ) form later and grow more slowly<br />
- Less luminous (~100x) & numbers peak at z ~1<br />
• Relevant factors<br />
History of host galaxy, growth of S<strong>MB</strong>H, & gas supply<br />
(In)efficiency of radiation processes – impact on M BH from L x<br />
Roles of jets as well as accretion disk<br />
Presence of obscuring torus and viewing geometry<br />
CHANDRA
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