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Prog. Theor. Phys. Vol. 66 No. 2 (1981) pp. 508-525

Formation of Galaxies and Clusters of Galaxies in the Neutrino Dominated Universe

Humitaka Sato and Fumio Takahara

Research Institute for Fundamental Physics, Kyoto University, Kyoto 606

(Received March 23, 1981)

Abstract:

We present a detailed picture on the formation of galaxies and clusters of galaxies in the neutrino dominated universe. The primordial density fluctuations in neutrino matter give rise to the formation of rich clusters of galaxies and not yet collapsed superclusters. For smaller scale, the isothermal density fluctuations in nucleon matter start to grow when the mass of neutrinos involed in the fluctuation exceeds the neutrino Jeans mass. These objects are identified with small groups of galaxies. In a cluster or a small group, whose motion deviates considerably from the cosmic expansion, the growth of density fluctuations is accelerated and leads to the formation of galaxies. The characteristic mass of galaxies is given as 10¹⁰ ∼10¹¹M_⊙ for nucleons and 10 ∼40 times larger for neutrinos.

URL : http://ptp.ipap.jp/link?PTP/66/508/
DOI : 10.1143/PTP.66.508

[ Full Text PDF : FREE ACCESS (752K) ] Citation: Plain Text BiBTeX EndNote(RIS) RSS

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Citing Article(s) :

1. Progress of Theoretical Physics Vol. 67 No. 4 (1982) pp. 1093-1106 :

   Galaxy Formation in the Neutrino Dominated Universe

   Kenji Tomita

2. Progress of Theoretical Physics Vol. 68 No. 1 (1982) pp. 236-245 :

   Enlargement of a Void in the Expanding Universe

   Humitaka Sato

3. Progress of Theoretical Physics Vol. 70 No. 2 (1983) pp. 603-605 :

   Formation of Massive Galactic Halos with Neutrinos

   Takao Fujiwara

4. Progress of Theoretical Physics Supplement No.78 (1984) pp. 1-166 :

   Cosmological Perturbation Theory

   Hideo Kodama and Misao Sasaki

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