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Issue A&A
Volume 368, Number 3, March IV 2001
Page(s) 817 - 823
Section Extragalactic astronomy
DOI http://dx.doi.org/10.1051/0004-6361:20010059



A&A 368, 817-823 (2001)
DOI: 10.1051/0004-6361:20010059

Variability and polarization in the inner jet of 3C 395

L. Lara1, A. Alberdi1 and J. M. Marcaide2

1  Instituto de Astrofísica de Andalucía (CSIC), Apdo. 3004, 18080 Granada, Spain
2  Departamento de Astronomía, Universitat de Valéncia, 46100 Burjassot, Spain

(Received 10 November 2000 / Accepted 8 January 2001 )

Abstract
We present new results on the parsec-scale jet of the quasar 3C 395, derived from VLBI polarization-sensitive observations made in 1995.91 and 1998.50 at 8.4, 15.4 and 22.2 GHz. The observations show a complex one-sided jet extending up to 20 mas, with a projected magnetic field essentially aligned with the radio jet. The emission is strongly dominated, in total intensity and polarization, by the core and the inner jet region (of ~3 mas length). We have studied the details of this dominant region finding clear structural variations during this ~2.5 year period, in contrast with the apparent quietness of the jet structure inferred from lower resolution VLBI observations. We observe the ejection of a new component from the core and variations in the degree of polarization of the inner jet components. We estimate a high Faraday Rotation Measure close to the core, with a strong decrease along the inner jet.


Key words: galaxies: active -- galaxies: individual: 3C 395 -- galaxies: jets -- radio continuum: galaxies -- techniques: interferometric

Offprint request: L. Lara, lucas@iaa.csic.es

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