Physics Input from Multiwavelength Observations of AGN
Abstract
Description
The current status of leptonic jet models for blazars is reviewed. Differences between the quasar and BL-Lac subclasses of blazars may be understood in terms of the dominance of different radiation mechanisms in the gamma-ray regime. Spectral variability patterns of different blazar subclasses appear to be significantly different and require different intrinsic mechanisms causing gamma-ray flares. As examples, recent results of long-term multiwavelength monitoring of PKS 0528+134, 3C 279, and Mrk 501 are interpreted in the framework of leptonic jet models. Short-term variability patterns give important additional clues about the source geometry and the relevant radiation mechanisms in blazars. Challenges for future observational efforts are discussed.
10 pages; plain TeX; including 6 figures using epsf.tex. Invited review at ``Gamma-Ray Astrophysics through Multiwavelength Experiments (GAME) 2001'', Mt. Abu, India, March 8 - 10, 2001 (Bull. of the Astron. Soc. of India, in press)
10 pages; plain TeX; including 6 figures using epsf.tex. Invited review at ``Gamma-Ray Astrophysics through Multiwavelength Experiments (GAME) 2001'', Mt. Abu, India, March 8 - 10, 2001 (Bull. of the Astron. Soc. of India, in press)