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Formation of the First Stars and Blackholes

Published online by Cambridge University Press:  08 May 2018

Naoki Yoshida Open the ORCID record for Naoki Yoshida [Opens in a new window]
Naoki Yoshida*
Affiliation:
Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, 113-0033 Tokyo, the Japan email: [email protected]
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Abstract

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Cosmic reionization is thought to be initiated by the first generation of stars and blackholes. We review recent progress in theoretical studies of early structure formation. Cosmic structure formation is driven by gravitational instability of primeval density fluctuations left over from Big Bang. At early epochs, there are baryonic streaming motions with significant relative velocity with respect to dark matter. The formation of primordial gas clouds is typically delayed by the streaming motions, but then physical conditions for the so-called direct collapse blackhole formation are realized in proto-galactic halos. We present a promising model in which intermediate mass blackholes are formed as early as z = 30.

Keywords

Population III starssuper-massive blackholesgalaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S333: Peering towards Cosmic Dawn , October 2017 , pp. 209 - 215
Copyright
Copyright © International Astronomical Union 2018 

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