The mini-QSO's contribution to cosmic reionization

Details The mini-QSO's contribution to cosmic reionization The mini-QSO's contribution to cosmic reionization

Mar 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010raa....10..199w&link_type=abstract

Research in Astronomy and Astrophysics, Volume 10, Issue 3, pp. 199-210 (2010).

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

By employing an improved simulation of the evolution of black holes (BHs) based on the merger tree of dark matter halos, we explore the relationship between the central BH mass Mbh and velocity dispersion σ* at high redshift z >= 6 and quantify the mini-QSO's (with BH mass M = 200 - 105Modot) contribution to cosmic reionization. The simulation demonstrates how seed BHs migrate onto the MBH-σ* relation by merging with each other and accreting gas at z >= 6: 1. The correlation between BHs and their host halos increases as the BHs grow; 2. The slope, i.e. phi = d log (Mbh)/d log(σ*) in the relationship, is insensitive to the redshift at z > 6. In agreement with previous work, we find that mini-QSOs' ionizing capability to the Universe lies in the range ~ 25% - 50% if early miniquasars have extremely high duty cycles, i.e. P(z > 6) ~ 0.9 - 1.

Affiliated with

Also associated with

No associations

Rating

The mini-QSO's contribution to cosmic reionization 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 The mini-QSO's contribution to cosmic reionization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The mini-QSO's contribution to cosmic reionization will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1679839