Early Black Hole Formation by Accretion of Gas and Dark Matter

Abstract

We propose a model in which intermediate-mass black holes (IMBHs) with mass of ~10000 Msun are formed in early dark matter halos. We carry out detailed stellar evolution calculations for accreting primordial stars including annihilation energy of dark matter particles. We follow the stellar core evolution consistently up to gravitational collapse. We show that very massive stars, as massive as 10000 Msun, can be formed in an early dark matter halo. Such stars are extremely bright with Log L/Lsun > 8.2. They gravitationally collapse to form IMBHs. These black holes could have seeded the formation of early super-massive blackholes.

Published in Journal of Cosmology and Astroparticle Physics. 14 pages, 4 figures

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• The Formation of the First Massive Black Holes
• Supermassive Dark Stars: Detectable in JWST
• Observing Dark Stars with JWST
• Relativistic Bondi-Hoyle-Lyttleton Accretion onto a Rotating Black-Hole: Density Gradients
• Scalar Field Dark Matter: behavior around black holes
• Exploring the effects of pressure on the radial accretion of dark matter by a Schwarzschild supermassive black hole
• Impacts of Dark Stars on Reionization and Signatures in the Cosmic Microwave Background
• Horizon growth of supermassive black hole seeds fed with collisional dark matter
• Black Holes in our Galactic Halo: Compatibility with FGST and PAMELA Data and Constraints on the First Stars
• Evolution of Primordial Stars Powered by Dark Matter Annihilation up to the Main-Sequence Stage
• Dark Matter that can form Dark Stars
• Big Bounce Genesis and Possible Experimental Tests -- A Brief Review
• Thermal Fluctuations of Dark Matter in Bouncing Cosmology