Physics
Scientific paper
Apr 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aps..ossb11001b&link_type=abstract
American Physical Society, Ohio Section Spring 2004, April 16-17, 2004, Ohio University, Athens, Ohio, MEETING ID: OSS04, abstra
Physics
Scientific paper
Blazars are a peculiar, extreme class of active galactic nuclei. They can generally be observed across the electromagnetic spectrum, from radio waves to gamma-rays and are strongly variable in all wavelength bands. In many cases, the overall energy output is dominated by the gamma-ray emission. There is overwhelming evidence that those objects have highly relativistic collimated bipolar outflows (jets) which are oriented at a small angle with respect to our line of sight. In this talk, I will review our current understanding of the physical mechanisms responsible for the peculiar spectral and variability patterns seen in blazars. A meaningful physical interpretation of observed spectra and variability patterns requires large-scale, co-ordinated observing campaigns to obtain simultaneous measurements in all wavelength bands. I will present several examples of results from recent multiwavelength observations of blazars and their theoretical interpretation.
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