Multi-frequency studies of the non-stationary radiation of the blazar 3C 454.3

Details Multi-frequency studies of the non-stationary radiation of the blazar 3C 454.3 Multi-frequency studies of the non-stationary radiation of the blazar 3C 454.3

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011arep...55..608v&link_type=abstract

Astronomy Reports, Volume 55, Issue 7, pp.608-615

Astronomy and Astrophysics

Astronomy

Scientific paper

Long-term monitoring data at five radio frequencies from 4.8 to 37 GHz obtained at the Crimean Astrophysical Observatory, Metsahovi Radio Observatory of Aalto University, and the University of Michigan Radio Astronomy Observatory are used to analyze variations of the flux of the Active Galactic Nucleus (AGN) 3C 454.3. The dynamical characteristics of the three latest powerful flares from 2004 to 2010 are analyzed in detail. Observations in the gamma-ray (0.1-300 GeV), X-ray (2-10 kev, 15-50 keV), and optical are also used. Delays in the development of flares at different frequencies are derived. An empirical frequency dependence for the delays of flares from the gamma-ray to the radio is determined, which can be fit using a logarithmic low and remains the same from flare to flare. The physical characteristics of the central region of the AGN 3C 454.3 are used to estimate the size of its Strömgren sphere, taking into account the relevant mechanisms for heating and cooling the medium, as well as the adopted laws for the variation of the density and temperature with distance from the source of ionization. A model for the location of the radiation regions in the jet at various frequency ranges during the development of flares is proposed.

Affiliated with

Also associated with

No associations

Rating

Multi-frequency studies of the non-stationary radiation of the blazar 3C 454.3 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Multi-frequency studies of the non-stationary radiation of the blazar 3C 454.3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-frequency studies of the non-stationary radiation of the blazar 3C 454.3 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1851817