HOME    |    BROWSE    |    SEARCH    |    SUBSCRIPTION   |    SUBMISSION    |    REGISTRATION

Quick Search:
Author: Title/Abstract: Vol./No: Page:
PTP Online Top > Volume 64 (1980) > Number 1
| Next Article >

Prog. Theor. Phys. Vol. 64 No. 1 (1980) pp. 81-93

[ Full Text PDF : FREE ACCESS (1090K) ]

On the Observability of Young X-Ray Clusters of Galaxies

Satoru Ikeuchi and Yuzō Hirayama

Department of Physics, Hokkaido University, Sapporo 060

(Received February 16, 1980)

Abstract:

As the origin of hot intracluster gas in X-ray clusters of galaxies, we consider the injected gas from cluster galaxies at their early explosive era. In the first place, the dynamical evolution of this injected gas under the cluster potential is calculated numerically. In this model, the X-ray luminosity attains 1046 ∼1048 ergs s-1 within the time 1.0 ×1.016 s after the formation of intracluster gas, and afterwards it decreases to the present value.
Nextly, we examine the observability of these young luminous X-ray clusters in consideration of the cosmic expansion. These young clusters will be detectable by the Einstein satellite, 104 ∼105 sec exposure in such pictures that the angular size is 0.1 ∼1.0 arc minutes, the photon flux at 3keV is \gtrsim10-5 photons s-1 cm-2 keV-1 and the expected number of objectsis 0.1 ∼1 clusters per one field of view. Some discussions on the diffuse X-ray background will also be given.


URL : http://ptp.ipap.jp/link?PTP/64/81/
DOI : 10.1143/PTP.64.81

[ Full Text PDF : FREE ACCESS (1090K) ] Citation:

References:

  1. R. Giacconi, J. Bechtold, G. Branduardi, W. Forman, J. P. Henry, C. Jones, E. Kellogg, H. van der Laan, W. Liller, H. Marshall, S. S. Murray, J. Pye, E. Schreier, W. L. Sargent, F. Seward and H. Tananbaum, Astrophys. J. 234 (1979), L1[CrossRef].
  2. S. Ikeuchi, Prog. Theor. Phys. 58 (1977), 1742[PTP].
  3. D. S. De Young, Astrophys. J. 223 (1978), 47[CrossRef].
  4. Y. Tanaka and S. Ikeuchi, Prog. Theor. Phys. 62 (1979), 393[PTP].
  5. E. Kellogg, Astrophys. J. 218 (1977), 582[CrossRef].
  6. N. A. Bahcall, Astrophys. J. 187 (1974), 439[CrossRef].
  7. A. A. Leir and S. van den Bergh, Astrophys. J. Suppl. 34 (1977), 381.
  8. C. Jones and W. Forman, Astrophys. J. 224 (1978), 1[CrossRef].
  9. S. Weinberg, Gravitation and Cosmology (Wiley, New York, 1972).
  10. C. Blumenthal and W. Tucker, X-Ray Astronomy, ed. R. Giacconi and H. Gursky, (Dordvecht, Reidel), p. 131.
  11. R. Giacconi et al., Astrophys. J. 230 (1979), 540[CrossRef].
  12. N. A. Bahcall, Astrophys. J. 232 (1979), L83[CrossRef].
  13. J. P. Henry, G. Branduardi, U. Briel, D. Fabricant, E. Feigelson, S. Murray, A. Soltan and H. Tananbaum, Astrophys. J. 234 (1979), L15[CrossRef].
  14. S. C. Perrenod, Astrophys. J. 226 (1978), 566[CrossRef].
  15. J. Silk, Astrophys. J. 208 (1976), 646[CrossRef].
  16. D. A. Schwarz, Proceedings of IAU/COSPAR Symposium on Z-Ray Astronomy.
  17. C. Norman and J. Silk, Astrophys. J. 233 (1979), L1[CrossRef].

Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 65 No. 2 (1981) pp. 463-476 :
    Dynamics of Intracluster Gas in Aspherical Clusters of Galaxies and Their X-Ray Appearances
    Yuzo Hirayama and Satoru Ikeuchi

[PTP HOME] [BROWSE] [SEARCH] [SUBSCRIPTION] [SUBMISSION] [REGISTRATION]

Copyright © Progress of Theoretical Physics 2013 All rights reserved.