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Prog. Theor. Phys. Vol. 46 No. 2 (1971) pp. 416-432

[ Full Text PDF : FREE ACCESS (992K) ]

Dissipation of Primordial Turbulence and Thermal History of the Universe

Takuya Matsuda, Humitaka Sato* and Hidenori Takeda*

Department of Aeronautical Engineering, Kyoto University, Kyoto
*Department of Physics, Kyoto University, Kyoto

(Received March 8, 1971)

Abstract:

The assumption that in the early stage of the universe there existed turbulence of photons and plasma dragged by them can explain the formation of galaxies plausibly. Using simple expressions to represent the decay law of the primordial turbulence, the thermal history of gas at the pre-galactic stage is followed and the residual ionization degree of hydrogen is computed. It is found that maximum temperatures attainable are about 104 °K for a wide range of heating parameters. This is because a kind of thermostat that keeps gas temperature below 104 °K operates: the increase of temperature above 104 °K prevented by the increase of the ionization degree and the resultant increase of cooling rate. Therefore, it can be concluded that galaxies cannot be formed through the thermal instability due to the heating by the primordial turbulence.


URL : http://ptp.ipap.jp/link?PTP/46/416/
DOI : 10.1143/PTP.46.416

[ Full Text PDF : FREE ACCESS (992K) ] Citation:

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Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 50 No. 2 (1973) pp. 472-487 :
    On the Generatin of Sound from the Primordial Turbulence in an Expanding Universe
    Hidekazu Nariai
  2. Progress of Theoretical Physics Vol. 54 No. 3 (1975) pp. 719-729 :
    On the Acoustic Decay of Primordial Cosmic Turbulence
    Kenji Tanabe, Hidekazu Nariai, Takuya Matsuda and Hidenori Takeda
  3. Progress of Theoretical Physics Vol. 71 No. 5 (1984) pp. 946-959 :
    Generation and Evolution of the Density Fluctuation in the Evolving Universe. I
    Hideo Kodama

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