Abstract Details
| Name: ADITI AGARWAL Affiliation: ARIES, NAINITAL Conference ID: ASI2015_694 Title : Multi-band Radio Cross-correlated Variability of the Blazar 3C 454.3 Authors and Co-Authors : Aditi Agarwal(1), P. Mohan(2), A. Mangalam(2), A. C. Gupta(1) & A. E. Volvach(3) 1. ARIES, Manora Peak, Nainital - 263 002, India 2. IIA, Koramangala, Sarjapur Road, Bangalore - 560 034, India 3. Radio Astronomy Laboratory, Crimean Astrophysical Observatory, Ukraine Abstract Type : Poster Abstract Category : Extragalactic astronomy Abstract : Core-jet structure is one of the salient features of radio-loud active galactic nuclei (RLAGN) and specifically in Blazars. We will present multi-band cross correlation for the Blazar 3C 454.3 in the five radio bands from 4 GHz to 37 GHz using the combined ~ 4 decades data taken from radio telescopes of University of Michigan Radio Astronomy Observatory, Cremia Observatory, and Metsahovi Radio Observatory. We have calculated frequency dependent time delays using multiple Gaussian model fitting to the multi-frequency light curves. Using these time lags of the different flares, we estimated frequency-dependent core shifts in 3C 454.3 and a radiative shock model, we have derived physical parameters of the jets such as magnetic field strength in the core region, core position offset, and distance between the core and the base of the jet. |