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Prog. Theor. Phys. Vol. 77 No. 5 (1987) pp. 1152-1162

[ Full Text PDF : FREE ACCESS (602K) ]

Formation of the First Systems in the Wakes of Moving Cosmic Strings

Tetsuya Hara and Shigeru Miyoshi

Department of Physics, Kyoto Sangyo University, Kyoto 603

(Received October 6, 1986)

Abstract:

Since particles receive the velocity behind moving cosmic strings, wakes are formed from dark matter and baryonic matter. These wakes will fragment into the first systems of mass M ≃107(Gµ/10-6)3 (βst γst)3 (1+zi)1.5 /(1+zf)3 M⊙, where zi, zf, µ, βmboxst and γst are the epoch the cosmic string traverse, the epoch the fragmentation occurs, the line density, the velosity of the strings and γst=(1-β2st)-1/2 in units of c=1. The shock waves in the baryonic matter appear in the wakes after the epoch z≃790(Gµβstγst/10-6). The baryon gas clouds may contract due to H2 cooling after z≃102 and Population III stars with masses of 10-1∼102M⊙ may be fragmented within such first sysetms. The effects of such Population III stars on the surrounding space are briefly discussed.


URL : http://ptp.ipap.jp/link?PTP/77/1152/
DOI : 10.1143/PTP.77.1152

[ Full Text PDF : FREE ACCESS (602K) ] Citation:

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Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 78 No. 5 (1987) pp. 1081-1098 :
    Flare-Up of the Universe after z ≃102 for Cosmic String Model
    Tetsuya Hara and Shigeru Miyoshi
  2. Progress of Theoretical Physics Vol. 81 No. 6 (1989) pp. 1187-1197 :
    Large-Scale Structures and Streaming Velocities Due to Open Cosmic Strings
    Tetsuya Hara and Shigeru Miyoshi
  3. Progress of Theoretical Physics Vol. 83 No. 4 (1990) pp. 660-665 :
    Decrease of Velocity Differences between Baryonic Objects and Cold Dark Matter
    Tetsuya Hara and Shigeru Miyoshi
  4. Progress of Theoretical Physics Vol. 84 No. 5 (1990) pp. 867-874 :
    Large-Scale Structures Due to Wakes of Open Cosmic Strings
    Tetsuya Hara, Shorji Morioka and Shigeru Miyoshi
  5. Progress of Theoretical Physics Vol. 102 No. 1 (1999) pp. 51-70 :
    Hierarchical Structure of Astronomical Objects in the Cosmic String Scheme
    Tetsuya Hara, Petri Mähönen, Toru Hirayama and Shigeru J. Miyoshi

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