Collective emission from rapidly variable quasars

Details Collective emission from rapidly variable quasars Collective emission from rapidly variable quasars

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...391l..59b&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 391, no. 2, June 1, 1992, p. L59-L62. Research supported by USAF.

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Astronomical Models, Emission Spectra, Quasars, Compton Effect, Computational Astrophysics, Cosmic Plasma, Relativistic Electron Beams, Synchrotron Radiation

Scientific paper

Recently blazers have shown variability in total flux density, polarization, and polarization position angle in both radio and optical bands. This demands brightness temperatures about 10 to the 6th times the limit set by incoherent synchrotron emission by relativistic electrons. Laboratory experiments displaying just such enhancement when relativistic beam density exceeds 1 percent of background plasma density are reported. These suggest a model for collective emission from jets explaining variability and spectral features. It implies that jets could have lower energy electrons in much lower numbers than conventional theory demands, lessening the requirements on the underlying engines. Rapid decay of the high-frequency end of the varying spectra could check these ideas.

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