Results of VLBI monitoring of 3C273 at 22 GHz and 43 GHz

Details Results of VLBI monitoring of 3C273 at 22 GHz and 43 GHz Results of VLBI monitoring of 3C273 at 22 GHz and 43 GHz

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999newar..43..737m&link_type=abstract

New Astronomy Reviews, Volume 43, Issue 8-10, p. 737-740.

Astronomy and Astrophysics

Astronomy

Scientific paper

The results of VLBI observations of the quasar 3C273, obtained during a multi-band campaign, are presented. The changes in separation from the core of the components along the first 2 mas of the jet were measured. The jet starts wiggling well inside the first parsec from the core. We derived the period of the oscillating jet path around the principal jet-axis in the range 2-8 mas from the core. The components' angular sizes, their peak fluxes, and turnover frequencies were also derived from the VLBI observations. We have derived lower limits to the Doppler factor by comparing the observed X-ray fluxes with those predicted by the synchrotron self-Compton model. Independent estimates were obtained through the assumption of energy equipartition between particles and magnetic field.

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