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The Structure of the Broad Emission Line Region as Shown by Variability Monitoring

Published online by Cambridge University Press:  19 July 2016

Julian H. Krolik*
Affiliation:
Johns Hopkins University

Abstract

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The various methods used to infer the physical conditions and location of the material responsible for broad line emission in AGN are reviewed. Recent efforts have focussed on reverberation mapping, whose basic concepts and experimental constraints are discussed. A new method for analyzing the results of monitoring experiments, regularized linear inversion, is presented. This method is then applied to published data from the 1989 IUE campaign on NGC 5548, and the results found contrasted with those obtained by the previous standard method, maximum entropy.

Type
Variability
Copyright
Copyright © Kluwer 1994 

References

Bahcall, J.N. and Kozlovsky, B.-Z. 1969, Astrophysical Journal 155, 1077.Google Scholar
Bahcall, J.N., Kozlovsky, B.-Z., and Salpeter, E.E., 1972, Astrophysical Journal 171, 467.Google Scholar
Blandford, R.D. and McKee, C.F., 1982, Astrophysical Journal 255, 419.Google Scholar
Clavel, J. et al. 1991, Astrophysical Journal 366, 64 Google Scholar
Davidson, K. 1972, Astrophysical Journal 171, 213.CrossRefGoogle Scholar
Davidson, K. 1975, Astrophysical Journal 195, 285 Google Scholar
Done, C. and Krolik, J.H. 1993 in preparation Google Scholar
Dumont, A.M. and Collin-Souffrin, S. 1990, Astronomy and Astrophysics 229, 313 Google Scholar
Gaskell, C.M. and Sparke, L.S. 1986, Astrophysical Journal Google Scholar
Hamann, F. and Ferland, G. 1992, Astrophysical Journal 391, L53 CrossRefGoogle Scholar
Kallman, T.R., Wilkes, B., Krolik, J.H., and Green, R.F. 1993, Astrophysical Journal 40 3, 45 Google Scholar
Kazanas, D., 1989, Astrophysical Journal 347, 74 Google Scholar
Korista, K. et al. 1994 in preparation Google Scholar
Krolik, J.H., 1988, Astrophysical Journal 325, 148 CrossRefGoogle Scholar
Krolik, J.H. and Kallman, T.R. 1988, Astrophysical Journal 324, 714 CrossRefGoogle Scholar
Krolik, J.H., Horne, K., Kallman, T.R., Malkan, M.A., Edelson, R.A., and Kriss, G.A. 1991, Astrophysical Journal 371, 541 CrossRefGoogle Scholar
Kwan, J.Y. 1984, Astrophysical Journal 283, 70 Google Scholar
Kwan, J.Y. and Krolik, J.H. 1981, Astrophysical Journal 250, 478.Google Scholar
MacAlpine, G.M. 1972, Astrophysical Journal 175, 11.Google Scholar
Maoz, D. et al. 1991, Astrophysical Journal 367, 493.Google Scholar
Netzer, H. and Maoz, D. 1990, Astrophysical Journal, Letters to the Editor 365, L5.CrossRefGoogle Scholar
Press, W.H., Teukolsky, S.A., Vetterling, W.T., and Flannery, B.P. 1992, it Numerical Recipes, 2d ed., (Cambridge University Press: Cambridge)Google Scholar
Peterson, B.M. et al. 1991, Astrophysical Journal 368, 119 Google Scholar
Rees, M.J., Netzer, H., and Ferland, G.A. 1989, Astrophysical Journal 347, 640.Google Scholar
Reichert, G. et al. 1993, Astrophysical Journal in press Google Scholar
Scoville, N.Z. and Norman, C.A. 1988, Astrophysical Journal 332, 163 Google Scholar
Sparke, L. 1993, Astrophysical Journal 404, 570 Google Scholar
Stirpe, G. et al. 1993 in preparation Google Scholar