Accretion onto the first stellar mass black holes

Content Provider	Semantic Scholar
Author	Alvarez, Marcelo Wise, John H. Abel, Tom
Copyright Year	2008
Abstract	The first stars in the universe, forming at redshifts z > 15 in minihalos with masses of order 10 M⊙, may leave behind black holes as their remnants. These objects co uld nceivably serve as "seeds" for much larger black holes observed at redshifts z . 7. We study the growth of the remnant black holes through accr etion including for the first time the emitted accretion radiation wi th adaptive mesh refinement cosmological radiationhydrodynamical simulations. The effects of photo-ionizat ion and heating dramatically affect the accretion flow from large scales, resulting in negligible mass growth of th e black hole. We compare cases with the accretion luminosity included and neglected to show that the accretio n radiation drastically changes the environment within 100 pc of the black hole, where gas temperatures are in c ased by an order of magnitude. The gas densities are reduced and further star formation in the same min i-halo prevented for the two hundred million years of evolution we followed. These calculations show that even without the radiative feedback included most seed black holes do not gain mass as efficiently as has been hop d for in previous theories, implying that black hole remnants of Pop III stars that formed in minihalos are no t likely to be the origin of miniquasars. Most importantly, however, these calculations demonstrate tha t if e rly stellar mass black holes are indeed accreting close to the Bondi-Hoyle rate with ten percent efficiency the y ave a dramatic local effect in regulating star formation in the first galaxies. Subject headings: cosmology: theory — galaxies: formation — black holes: form ation
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://arxiv.org/pdf/0811.0820v1.pdf
Alternate Webpage(s)	http://arxiv.org/pdf/0811.0820v2.pdf
Alternate Webpage(s)	http://www.slac.stanford.edu/pubs/slacpubs/13750/slac-pub-13750.pdf
Language	English
Access Restriction	Open
Subject Keyword	Adaptive mesh refinement BONDI Black Hole GUCY2C protein, human Heating Ions Large Maxima and minima Medical Subject Headings Physical object Plant seeds Refinement (computing) Remnant Simulation Stars, Celestial Stellar (payment network) Theory density
Content Type	Text
Resource Type	Article