Hostname: page-component-7479d7b7d-q6k6v Total loading time: 0 Render date: 2024-07-12T17:31:57.037Z Has data issue: false hasContentIssue false
  • English
  • Français

X-Ray Properties of Galactic Nuclei

Published online by Cambridge University Press:  30 March 2016

Daniel W. Weedman
Daniel W. Weedman*
Affiliation:
Astronomy Department, The Pennsylvania State University, University Park, PA 16802, USA.

Extract

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.

Preparing this review was my just punishment for stating only two years ago - in another review (Weedman 1977) - that Seyfert galaxies are not strong X-ray sources. I said that because, as recently as three years ago, NGC 4151 was the only Seyfert galaxy known as an X-ray source. Now we have 36 Seyfert 1 galaxies, along with 12 other galaxies with strong emission-line nuclei, that are X-ray sources. And this is all without even having HEAO-2 data at our disposal yet. The study of active galactic nuclei with X-ray astronomy is progressing so rapidly that a reviewer feels almost hopeless. The best I can do is summarize what is known as of the summer of 1979 and give a simple overview of how X-ray and other properties relate.

Some excellent reviews of the X-ray properties of Seyfert and other emission-line galaxies already exist. I especially recommend that by Andrew Wilson (1979). He provides very complete references as of a year ago, but X-ray astronomy is progressing so rapidly that he then had only somewhat more than half the active nuclei now in Tables 1 and 2. It was the group working with the Ariel V SSI that made the initial comprehensive X-ray studies of Seyfert galaxies (Ward et al. 1977, Elvis et al. 1978). The UHURU results for Seyfert galaxies followed soon after and are summarized by Tananbaum et al. (1978); the HEAO-A-2 survey results are now in press (Marshall et al. 1979) I have tried to incorporate these and other recent results in Tables 1 and 2.

Type
Joint Discussion
Information
Highlights of Astronomy , Volume 5: Highlights of Astronomy. As presented at the XVIIth General Assembly of the IAU, 1979 , 1980 , pp. 623 - 630
Copyright
Copyright © Cambridge University Press 1980

References

Bradt, H.V., Burke, B.F., Canizares, C.R., Greenfield, P.E., Kelly, R.L., McClintock, J.E., van Paradijs, J. and Koski, A.T.: 1978, Ap. J. Lett. 226, L111.Google Scholar
Canizares, C.R., McClintock, J.E. and Ricker, G.R.: 1978, Ap. J. Lett. 226, LI.CrossRefGoogle Scholar
de Bruyn, A.G. and Sargent, W.L.W.: 1978, A.J. 83, 1257.CrossRefGoogle Scholar
de Bruyn, A.G. and Wilson, A.S.: 1978, Astron. Astrophys. 64, 433.Google Scholar
Delvaille, J.P., Geller, M.J. and Schnopper, H.W.: 1978, Ap. J. Lett. 226, L69.CrossRefGoogle Scholar
Dower, R., Griffiths, R., Johnston, M., Bradt, H., Doxsey, R. and Schwartz, D.: 1979, B.A.A.S. 11, 442.Google Scholar
Elvis, M., Maccacaro, T., Wilson, A.S., Ward, M.J., Penston, M.V., Fosbury, R.A.E. and Perola, G.C.: 1978, M.N.R.A.S. 183, 5.CrossRefGoogle Scholar
Griffiths, R.E., Doxsey, R.E., Johnston, M.D., Schwartz, D.A., Schwartz, J. and Blades, J.C.: 1979a, Ap. J. Lett. 230, L21.CrossRefGoogle Scholar
Griffiths, R.E., Feigelson, E. and Van Speybroeck, L.: 1979b), B.A.A.S. 11, 466.Google Scholar
Ku, W.H.M., Chanan, G.A., Helfand, D.J. and Long, K.S.: 1979, B.A.A.S. 11, 466.Google Scholar
Marshall, F.E., Boldt, E.A., Mushotzky, R.F., Pravdo, S.H., Rothschild, R.E. and Serlemitsos, P.J.: 1979, Ap. J. Suppl., in press.Google Scholar
Marshall, F.E., Mushotzky, R.F., Boldt, E.A., Holt, S.S., Rothschild, R.E. and Serlemitsos, P.J.: 1978, Nature 275, 624.CrossRefGoogle Scholar
Mushotzky, R.F., Marshall, F.E., Boldt, E.A., Holt, S.S. and Serlemitsos, P.J.: 1979 Ap. J., in press.Google Scholar
Osterbrock, D.E.: 1978, Proc. Nat. Acad. Sci. USA 75, 540.Google Scholar
Osterbrock, D.E.: 1979, A.J. 84, 901.Google Scholar
Pineda, F., Delvaille, J., Grindlay, J., Huchra, J. and Schnopper, H.: 1979, B.A.A.S. 11, 427.Google Scholar
Rieke, G.: 1978, Ap. J. 226, 550.Google Scholar
Schnopper, H.W., Delvaille, J.P., Epstein, A., Cash, W., Charles, P., Bowyer, S., Hjellming, R.M., Owen, F.N. and Cotton, W.D.: 1978a, Ap. J. Lett. 222, L91.CrossRefGoogle Scholar
Schnopper, H.W., Davis, M., Delvaille, J.P., Geller, M.J. and Huchra, J.P.: 1978b, Nature 275, 719.CrossRefGoogle Scholar
Sramek, R.S. and Weedman, D.W.: 1978, Ap. J. 221, 468.Google Scholar
Tananbaum, H., Peters, G., Forman, W., Giacconi, R., Jones, C. and Avni, Y.: 1978, Ap. J. 223, 74.Google Scholar
Ward, M.J., Wilson, A.S., Penston, M.V., Elvis, M., Maccacaro, T. and Tritton, K.: 1978, Ap. J. 223, 788.Google Scholar
Ward, M.J. and Wilson, A.S.: 1978, Astron. Astrophys. 70, L79.Google Scholar
Ward, M.J., Wilson, A.S., Griffiths, R.E. and Blades, J.C.: 1979, B.A.A.S. 11, 442.Google Scholar
Weedman, D.W.: 1977, Ann.Rev. A. and Ap. 15, 69.Google Scholar
Wilson, A.S.: 1979, Proc.Roy.Soc.Lond., in press.Google Scholar
Wilson, A.S. and Penston, M.V.: 1979, Ap. J., in press.Google Scholar
Worrall, D.M., Mushotzky, R.F., Boldt, E.A., Holt, S.S. and Serlemitsos, P.J.: 1979, Ap. J., in press.Google Scholar