Multiband polarimetric and total intensity imaging of 3C345

Details Multiband polarimetric and total intensity imaging of 3C345 Multiband polarimetric and total intensity imaging of 3C345

1999-02-05

arxiv.org/abs/astro-ph/9902093v1

New Astron.Rev. 43 (1999) 717-721

Astronomy and Astrophysics

Astrophysics

LaTeX file, 6 pages, 2 figures, needs "elsart" style package To be published in New Astronomy Reviews, special issue: Proceedi

Scientific paper

10.1016/S1387-6473(99)00085-8

We monitored the superluminal QSO 3C 345 at three epochs during a one-year period in 1995--1996, observing with the VLBA at 22, 15, 8.4, and 5 GHz. We imaged the radio source both in total and in polarized intensity. In the images at 5 and 8.4 GHz, the jet emission is traced up to 20 milliarcseconds (mas) from the jet core. In the 15 and 22 GHz images, we identify several enhanced emission regions moving at apparent speeds of 5c. Images of the linear polarized emission show predominantly an alignment of the electric vector with the extremely curved jet along the inner part of the high frequency jet. At 5 GHz, the jet shows remarkably strong fractional polarization (m~15%) with the electric vector perpendicular to the jet orientation.

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