The H II Region of 3C 345: Radio Variability and Recombination Lines

Details The H II Region of 3C 345: Radio Variability and Recombination Lines The H II Region of 3C 345: Radio Variability and Recombination Lines

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..360..157m&link_type=abstract

AGN Variability from X-Rays to Radio Waves ASP Conference Series, Vol. 360, Proceedings of the conference held 14-16 June, 2004

Astronomy and Astrophysics

Astrophysics

Scientific paper

Studies of the fine structure of QSS 3C 345 show that the brightness of compact components at low frequencies is T_{b}≤ 10^{12} K. The core, i.e., the nozzle and jet, consists of a stream of relativistic plasma surrounded by a thermal plasma like a cocoon wall. The wall absorbs synchrotron radio emission in continuum and recombination lines. The absorption in lines H(78-79)α is measured. The ratio of the line to continuum emission is 0.3%, the line width is Δ ν = 5.3 MHz, and the frequency difference corresponds to Δ z=0.0013.

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