Abstract
Since the discovery of quasars and other types of active galactic nuclei (AGN) various theoretical models have been proposed to explain the characteristics of these exceptional astronomical objects. Among their extreme properties are maximum luminosities exceeding 1047 erg/s, generated on very small spatial scales (less than 1 pc), the non-thermal continuum emission, polarization, the variability on short time scales and the occurrence of relativistic jets (for an overview compare e.g. Netzer 1989). As primary energy source was suggested (Lynden-Bell 1969, Hills 1975) the liberation of gravitational binding energy by accretion and dissipative processes in the vicinity of a supermassive black hole. Such a model is at least for the most luminous sources now widely accepted as a standard model (Rees 1984, Netzer 1990). One should note, however, that this standard model still poses some outstanding and serious questions; these are for example its wrong predictions for the Lyman-α to Hβ line ratios and for the FeII line intensities (see Netzer 1989 and references therein).
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Aarseth, S.J.: In “Multiple Time Scales” Academic Press Inc. (1985), p. 377
Begelman, M.C., Rees, M.J.: Monthly Notices Roy. Astron. Soc. 185, 847 (1978)
Bettwieser, E.: Monthly Notices Roy. Astron. Soc. 203, 811 (1983)
Bettwieser, E.: Monthly Notices Roy. Astron. Soc. 215, 499 (1985)
Bettwieser, E., Inagaki, S.: Monthly Notices Roy. Astron. Soc. 213, 473 (1985)
Bettwieser, E., Spurzem, R.: Astron. Astrophys. 161, 102 (1986)
Bettwieser, E., Sugimoto, D.: Monthly Notices Roy. Astron. Soc. 208, 439 (1984)
Binney, J., Tremaine, S.: “Galactic Dynamics” Academic Press Inc. (1987)
Bisnovat’i-Kogan, G.S., S’un’aev, R.A.: Soviet Astron. 16, 201 (1972)
Cohn, H.: Astrophys. J. 242, 765 (1980)
Cohn, H., Hut, P., Wise, M.: Astrophys. J. 342, 814 (1989)
Cohn, H., Kulsrud, R.M.: Astrophys, J. 226, 1087 (1978)
Dressler, E.: Astrophys. J. 240, L11 (1980)
Dressier, E.: In “Active Galactic Nuclei” IAU Symp. No. 134, eds. D.E. Osterbrock, J.S. Miller, (Kluwer, Dordrecht, 1989) p. 217
Duncan, M.J., Wheeler, J.C.: Astrophys. J. 237, L27 (1980)
Fuller, G.M., Woosley, S.E., Weaver, T.A.: Astrophys. J. 307, 675 (1986)
Genzel, R., Townes, C.H.: Ann. Rev. Astron. Astrophys. 25, 377 (1987)
Hara, T.: Prog, theor. Phys. 60, 711 (1978)
Hagio, F.: Publ. astr. Soc. Jap. 38, 111 (1986)
Hagio, F.: Publ. astr. Soc. Jap. 39, 887 (1987)
Heggie, D.C.: in “Dynamics of dense stellar systems” ed. D. Merritt, Cambridge University Press, U.K. (1988) p. 195
Heggie, D.C., Stephenson, D.: Monthly Notices Roy. Astron. Soc. 230, 223 (1988)
Heggie, D.C., Ramamani, N.: Monthly Notices Roy. Astron. Soc. 237, 757 (1989)
Hensler, G., Burkert, A.: Astrophys. Space Sci. 170, 231 (1990a)
Hensler, G., Burkert, A.: Astrophys. Space Sci. 171, 149 (1990b)
Hills, J.G.: Nature 254, 295 (1975)
Inagaki, S.: Publ. astr. Soc. Jap. 38, 853 (1986)
Jernigan, J.G., Porter, D.H.: Astrophys. J. Suppl. 71, 871 (1989)
Langbein, T., Spurzem, R., Fricke, K.J., Yorke, H.W.: Astron. Astrophys. 227, 333 (1990)
Larson, R.B.: Monthly Notices Roy. Astron. Soc. 150, 93 (1970)
Lee, H.M.: Astrophys. J. 319, 772 (1987)
Loose, H.H., Fricke, K.J.: In “The most massive stars”, Proc. of ESO workshop, eds. S.D. Odorico, D. Baade, K. Kjär, (1981), p. 269
Louis, P.D.: Monthly Notices Roy. Astron. Soc. 244, 478 (1990)
Louis, P.D., Spurzem, R.: Monthly Notices Roy. Astron. Soc. 244, 478 (1991)
Lynden-Bell, D.: Nature 223, 690 (1969)
Lynden-Bell, D., Eggleton, P.P.: Monthly Notices Roy. Astron. Soc. 191, 483 (1980)
Murphy, B.W., Cohn, H.N., Hut, P.: Monthly Notices Roy. Astron. Soc. 245, 335 (1990)
Murphy, B.W., Cohn, H.N.: Monthly Notices Roy. Astron. Soc. 232, 835 (1988)
Netzer, H.: In “Active Galactic Nuclei” IAU Symp. No. 134, eds. D.E. Osterbrock, J.S. Miller, (Kluwer, Dordrecht, 1989) p. 69
Netzer, H.: In “Active galactic nuclei” 20th Saas-Fee lecture, (Genf 1990)
Newton, A., Binney, J.: Monthly Notices Roy. Astron. Soc. 210, 711 (1984)
Quinlan, G.D., Shapiro, S.L.: Astrophys. J. 321, 199 (1987)
Quinlan, G.D., Shapiro, S.L.: Astrophys. J. 343, 725 (1989)
Quinlan, G.D., Shapiro, S.L.: Astrophys. J. 356, 483 (1990)
Rees, M.J.: Ann. Rev. Astron. Astrophys. 22, 471 (1984)
Richstone, D.O., Tremaine, S.: Astrophys. J. 286, 27 (1984)
Richstone, D.O., Tremaine, S.: Astrophys. J. 296, 370 (1985)
Sargent, W.L.W., Young, P.J., Boksenberg, A., Shortridge, K., Lynds, C.R., Hardwick, F.D.A.: Astrophys. J. 221, 731 (1978)
Sanders, R.H.: Astrophys. J. 162, 789 (1970)
Sellgren, K.: In “The Center of the Galaxy” IAU Symp. No. 136, ed. M. Morris, (Kluwer, Dordrecht, 1989) p. 477
Shapiro, S.L., Teukolsky, S.A.: Astrophys. J. 292, L41 (1985)
Spitzer, L.: Astrophys. J. 158, L139 (1969)
Spitzer, L.: “Dynamical Evolution of Globular Cluster” Princeton University Press, Princeton (1987)
Spitzer, L., Saslaw, W.C.: Astrophys. J. 143, 400 (1966)
Spitzer, L., Stone, M.E.: Astrophys. J. 147, 519 (1967)
Spurzem, R.: Monthly Notices Roy. Astron. Soc. 252, 177 (1991)
Statler, T.S., Ostriker, J.P., Cohn, H.N.: Astrophys. J. 316, 626 (1987)
Sugimoto, D.S., Chikada, Y., Makino, J., Ito, T., Ebisuaki, T., Umemura, M.: Nature 345, 33 (1990)
Unno, W.: Publ. astr. Soc. Jap. 23, 123 (1971)
Young, P.J., Westphal, J.A., Kristian, J., Wilson, C.P., Landauer, F.P.: Astrophys. J. 221, 721 (1978)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1992 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Spurzem, R. (1992). Evolution of Stars and Gas in Galactic Nuclei. In: Klare, G. (eds) Reviews in Modern Astronomy. Reviews in Modern Astronomy, vol 5. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-77543-7_11
Download citation
DOI: https://doi.org/10.1007/978-3-642-77543-7_11
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-77545-1
Online ISBN: 978-3-642-77543-7
eBook Packages: Springer Book Archive