Early Growth and Efficient Accretion of Massive Black Holes at High Redshift
Research output: Contribution to journal › Journal article › Research › peer-review
Documents
- pdf
605 KB, PDF document
Black-hole masses of the highest redshift quasars (4 ~ 4 quasars are very massive (>~ 10^9 solar masses). It is argued that the mass estimates of the high-z quasars are not subject to larger uncertainties than those for nearby quasars. Specifically, the large masses are not overestimates and the lack of similarly large black-hole masses in the nearby Universe does not rule out their existence at high-z. However, AGN host galaxies do not typically appear fully formed or evolved at these early epochs. This supports scenarios in which black holes build up mass very fast in a radiatively inefficient (or obscured) phase relative to the stars in their galaxies. Additionally, upper envelopes of black-hole mass of approximately 10^{10} solar masses and bolometric luminosity of ~ 10^{48} erg/s are observed at all redshifts.
Original language | English |
---|---|
Article number | 676 |
Journal | The Astrophysical Journal |
Volume | 601 |
Issue number | 2 |
ISSN | 0004-637X |
DOIs | |
Publication status | Published - 19 Sep 2003 |
- astro-ph
Research areas
Number of downloads are based on statistics from Google Scholar and www.ku.dk
No data available
ID: 123368895