Photoionization of a Clumpy Universe

Nakamoto, T.; Susa, H.; Umemura, M.

doi:10.1007/978-94-010-0864-8_33

T. Nakamoto³,
H. Susa³ &
M. Umemura³

Part of the book series: Astrophysics and Space Science Library ((ASSL,volume 263))

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Abstract

The ionization structure in a CDM-dominated universe is calculated self-consistently by solving 3D radiative transfer equation for UV photons. It is found that the reionization of a clumpy universe is quite sensitively dependent upon the intensity of the UV background which is thought to be attributed to quasars. If the universe is photoionized overall at early epochs by quasar light, the formation of subgalactic objects like dwarf galaxies could be strongly suppressed. Hence, in the light of the present luminosity function of galaxies, the formation of quasars should not be much earlier than the formation of galaxies.

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Authors and Affiliations

Center for Computational Physics, University of Tsukuba, Japan
T. Nakamoto, H. Susa & M. Umemura

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T. Nakamoto
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H. Susa
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M. Umemura
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Editors and Affiliations

Institute of Physical and Chemical Research, Wako, Saitama-ken, Japan
T. Ebisuzaki
The University of Tokyo, Tokyo, Japan
J. Makino

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Nakamoto, T., Susa, H., Umemura, M. (2001). Photoionization of a Clumpy Universe. In: Ebisuzaki, T., Makino, J. (eds) New Horizons of Computational Science. Astrophysics and Space Science Library, vol 263. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0864-8_33

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DOI: https://doi.org/10.1007/978-94-010-0864-8_33
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-3848-5
Online ISBN: 978-94-010-0864-8
eBook Packages: Springer Book Archive

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