Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-23T18:48:24.511Z Has data issue: false hasContentIssue false
  • English
  • Français

Correlation of X-Ray and Infrared Emission of Radio-Quiet QSOs

Published online by Cambridge University Press:  19 July 2016

D. M. Worrall
D. M. Worrall*
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, 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.

A correlation of the form , with γ = 0.83, is found between 2 keV monochromatic X-ray luminosity and 1.65 μm monochromatic infrared luminosity for a sample of optically selected radio-quiet QSOs. This is equivalent to an average 1.65 μm to 2 keV spectral index of αir/x = 1.28+0.05 log(lir/1031 ergs s−1 Hz−1). The ratio of X-ray to infrared luminosity decreases with increasing infrared luminosity in a manner similar to the relationship between X-ray and optical luminosity. The standard deviations of the distributions of data about the best-fit functions are comparable for the X-ray versus infrared and X-ray versus optical fits. Thus, contrary to a previous claim, the infrared luminosity is not better than the optical luminosity at predicting the X-ray emission from QSOs.

Type
Chapter X: The Distribution of X-Ray Sources and the X-Ray Background
Information
Symposium - International Astronomical Union , Volume 124: Observational Cosmology , 1987 , pp. 607 - 609
Copyright
Copyright © Reidel 1987 

References

Avni, Y., Soltan, A., Tananbaum, H., and Zamorani, G. 1980, Ap. J., 238, 800.Google Scholar
Avni, Y., and Tananbaum, H. 1982, Ap. J. (Letters), 262, L17.CrossRefGoogle Scholar
Avni, Y., and Tananbaum, H. 1986, Ap. J., 305, 83.Google Scholar
Elvis, M., Green, R.F., Bechtold, J., Schmidt, M., Neugebauer, G., Soifer, B.T., Matthews, K., and Fabbiano, G. 1986, Ap. J., 310, in press.CrossRefGoogle Scholar
Kriss, G.A., and Canizares, C.R. 1985, Ap. J., 297, 177.Google Scholar
Ku, W. H-M., Helfand, D.J., and Lucy, L.B. 1980, Nature, 288, 323.Google Scholar
Malkan, M.A. 1984, X-ray and UV Emission from Active Galactic Nuclei, ed. Trümper, J. and Brinkmann, W. (Garching: Max-Planck-Institut), p121.Google Scholar
Malkan, M.A., and Sargent, W.L.W. 1982, Ap. J., 254, 22.CrossRefGoogle Scholar
Neugebauer, G., Green, R.F., Matthews, K., Schmidt, M., Soifer, B.T., and Bennett, J. 1986, Ap. J. Suppl., in press.Google Scholar
Shields, G. 1978, Nature, 272, 706.Google Scholar
Tananbaum, H., Avni, Y., Green, R.F., Schmidt, M., and Zamorani, G. 1986, Ap. J., 305, 57.Google Scholar
Wilkes, B.J., and Elvis, M. 1986, Ap. J., submitted.Google Scholar
Worrall, D.M. 1986, Ap. J., submitted.Google Scholar
Worrall, D.M., Giommi, P., Tananbaum, H., and Zamorani, G. 1986, Ap. J., in press.Google Scholar
Zamorani, G. 1986, Quasars, eds. Swarup, G. and Kapahi, V.K. (Reidel), p223.Google Scholar