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Spectra of AGN Accretion Disks — Preliminary Results

Published online by Cambridge University Press:  07 August 2017

H. A. Scott  and
S. L. O'Dell
H. A. Scott
Affiliation:
Lawrence Livermore National Laboratory, L17, P. O. Box 808, Livermore, California 94550, USA
S. L. O'Dell
Affiliation:
Space Science Laboratory, ES65, NASA Marshall Space Flight Center, Huntsville, Alabama 35812, USA

Extract

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After the suggestion (Shields 1978) that some AGN emission might arise in an opaque accretion disk around a supermassive compact object, several papers (e.g., Malkan and Sargent 1982; Malkan 1983; Bechtold et al. 1987) have interpreted the flat ultraviolet continuum (“big blue bump”) observed in many AGN spectra, in terms of such a model. The early calculations approximated the radiation locally emergent from the accretion disk as blackbody; the more recent calculations (e.g., Czerny and Elvis 1987; Wandel and Petrosian 1988) have treated this emission as (electron-scattering) modified (possibly comptonized) blackbody.

Type
Part 4: Black Holes, Accretion Disks and Gravitational Lenses
Information
Symposium - International Astronomical Union , Volume 134: Active Galactic Nuclei , 1989 , pp. 257 - 258
Copyright
Copyright © Kluwer 1989 

References

Bechtold, J., Czerny, B., Elvis, M., Fabbiano, G., and Green, R. F. 1987, Ap. J., 314, 699.Google Scholar
Czerny, B., and Elvis, M. 1987, Ap. J., 321, 305.CrossRefGoogle Scholar
Kolykhalov, P. I., and Sunyaev, R. A. 1984, Adv. Space Res., 3, 249.CrossRefGoogle Scholar
Lightman, A. P., and Eardley, D. M. 1974, Ap. J. (Letters), 187, L1.CrossRefGoogle Scholar
Lin, D. A. C., and Shields, G. A. 1986, Ap. J., 305, 28.Google Scholar
Malkan, M. A. 1983, Ap. J., 268, 582.CrossRefGoogle Scholar
Malkan, M. A., and Sargent, W. L. W. 1982, Ap. J., 254, 22.Google Scholar
Mihalas, D. 1978, Stellar Atmospheres, Second Edition (San Francisco: W. H. Freeman).Google Scholar
Novikov, I., and Thorne, K. S. 1973, in Black Holes, ed. DeWitt, C. and DeWitt, B. S. (New York: Gordon & Breach).Google Scholar
O'Dell, S. L. 1986, Pub. A. S. P., 98, 140.Google Scholar
O'Dell, S. L., Scott, H. A., and Stein, W. A. 1987, Ap. J., 313, 164.CrossRefGoogle Scholar
Pacharintanakul, P., and Katz, J. I. 1980, Ap. J., 238, 985.CrossRefGoogle Scholar
Pringle, J. E., and Rees, M. J. 1972, Astr. Ap., 21, 1.Google Scholar
Shakura, N. I., and Sunyaev, R. A. 1973, Astr. Ap., 24, 337.Google Scholar
Shakura, N. I., and Sunyaev, R. A. 1976, M.N.R.A.S., 175, 613.Google Scholar
Shields, G. 1978, Nature, 272, 706.CrossRefGoogle Scholar
Wandel, A., and Petrosian, V. 1988, Ap. J. (Letters), 329, L11.CrossRefGoogle Scholar