Black hole formation is an inevitable consequence of relativistic core collapse following the gravothermal catastrophe in self-interacting dark matter (SIDM) halos. Very massive SIDM halos form supermassive black holes (SMBHs) >~106Msolar directly. Smaller halos believed to form by redshift z = 5 produce seed black holes of (102-103)Msolar which can merge and/or accrete to reach the observational SMBH range. This scenario for SMBH formation requires no baryons, no prior star formation, and no other black hole seed mechanism.
Physical Review Letters
- Pub Date:
- March 2002
- General Relativity and Quantum Cosmology
- 4 pages, RevTeX. Very minor changes, shortened to comply with PRL requirements. Figures 2 and 3 corrected from v2