Hostname: page-component-76fb5796d-25wd4 Total loading time: 0 Render date: 2024-04-28T23:16:27.863Z Has data issue: false hasContentIssue false
  • English
  • Français

The Properties of Extragalactic X-Ray Sources from Visible Light Observations

Published online by Cambridge University Press:  14 August 2015

Wallace L. W. Sargent
Wallace L. W. Sargent*
Affiliation:
Hale Observatories, California Institute of Technology, Carnegie Institution of Washington, U.S.A.

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We describe the optical properties of the radio galaxy NGC 5128, the Seyfert galaxy NGC 4151 and the QSO 3C 273 all of which appear to be point sources of X-rays. We emphasize how the X-ray observations, particularly the low energy absorption cutoff, may help us to understand the detailed structure and source of energy in these diverse objects.

The clusters of galaxies in Virgo, Perseus, Coma and Centaurus, all associated with extended X-ray sources are described. They have diverse shapes, central concentrations and galactic populations, but all contain a radio galaxy and, in several cases, a low frequency radio halo around it. It is concluded that the X-ray emission is likely to be non-thermal in origin.

Type
Part III: Extragalactic Sources
Information
Symposium - International Astronomical Union , Volume 55: X- and Gamma-Ray Astronomy , 1973 , pp. 184 - 198
Copyright
Copyright © Reidel 1973 

References

Abell, G. O.: 1958, Astrophys. J. Suppl. 3, 211.CrossRefGoogle Scholar
Anderson, K. S. and Kraft, R. P.: 1969, Astrophys. J. 158, 859.Google Scholar
Arp, H. C.: 1968, Publ. Astron. Soc. Pac. 80, 129.Google Scholar
Bahcall, J. N. and Kozlovsky, B. Z.: 1969, Astrophys. J. 155, 1077.Google Scholar
Bautz, L. P. and Morgan, W. W.: 1970, Astrophys. J. Letters 162, L149.Google Scholar
Becklin, E. E., Frogel, J. A., Kleinman, D. E., Neugebauer, G., Ney, E. P., and Strecker, D. W.: 1971, Astrophys. J. Letters 170, L15.CrossRefGoogle Scholar
Burbidge, E. M. and Burbidge, G. R.: 1959, Astrophys. J. 129, 271.Google Scholar
Burbidge, E. M. and Burbidge, G. R.: 1972, Astrophys. J. 172, 37.Google Scholar
Burbidge, G. R. and Burbidge, E. M.: 1962, Nature 194, 367.Google Scholar
Chincarini, G. and Rood, H. J.: 1971, Astrophys. J. 16., 321.CrossRefGoogle Scholar
Dam, R. and Waddington, B.: 1972, private communication. Google Scholar
Danielson, R., Savage, B. D., and Schwarzschild, M.: 1968, Astrophys. J. Letters 154, L117.Google Scholar
de Vaucouleurs, G.: 1961, Astrophys. J Suppl. 6, 213.CrossRefGoogle Scholar
de Vaucouleurs, G.: 1968, Nearby Groups of Galaxies, preprint.Google Scholar
Fomalont, E. B. and Rogstad, D. H.: 1966, Astrophys. J. 146, 528.CrossRefGoogle Scholar
Gott, J. Richard III and Gunn, James E.: 1971, Astrophys. J. Letters 169, L13.Google Scholar
Gunn, J. E. and Sargent, W. L. W.: 1972, in preparation. Google Scholar
Klemola, A. R.: 1969, Astron. J. 74, 809.CrossRefGoogle Scholar
Kunkel, W. E. and Bradt, H. V.: 1971, Astrophys. J. Letters 170, L7.Google Scholar
Lynds, C. R.: 1970, Astrophys. J. Letters 159, L151.Google Scholar
Mathews, T. A., Morgan, W. W., and Schmidt, M.: 1964, Astrophys. J. 140, 35.Google Scholar
Nüssbaumer, H. and Osterbrock, D. E.: 1970, Astrophys. J. 161, 811.CrossRefGoogle Scholar
Oke, J. B. and Sargent, W. L. W.: 1968, Astrophys. J. 151, 807.Google Scholar
Osterbrock, D. E.: 1971, in O'Connell, D. J. K. (ed.), The Nuclei of Galaxies, North-Holland Publ. Co, Amsterdam, p. 151.Google Scholar
Rees, M. J. and Sargent, W. L. W.: 1972, Comm. Astrophys. Space Sci. 4, 7.Google Scholar
Rood, H. J., Page, T. L., Kintner, E. C., and King, I. R.: 1972, Astrophys. J. 175, 627.Google Scholar
Ryle, M. and Windram, M. D.: 1968, Monthly Notices Roy. Astron. Soc. 138, 1.Google Scholar
Wade, C. M.: 1968, Astron. J. 73, 876.Google Scholar
Wade, C. M., Hjellming, R. M., Kellermann, K. I., and Wardle, J. F. C.: 1971, Astrophys. J. Letters 170, L11.Google Scholar
Weedman, D. W.: 1971, Astrophys. J. Letters 167, L23.Google Scholar
Willson, M. A. G.: 1970, Monthly Notices Roy. Astron. Soc. 151, 1.CrossRefGoogle Scholar