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Issue A&A
Volume 397, Number 3, January III 2003
Page(s) L13 - L16
Section Letters
DOI http://dx.doi.org/10.1051/0004-6361:20021765



A&A 397, L13-L16 (2003)
DOI: 10.1051/0004-6361:20021765

Letter

EVN observation of three Broad Absorption Line quasars

D. R. Jiang1 and T. G. Wang2

1  Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, PR China
2  Center for Astrophysics, University of Science and Technology of China, Hefei, Anhui 230026, PR China

(Received 8 November 2002 / Accepted 1 December 2002 )

Abstract
We present the results of European VLBI Network observations of 3 Broad Absorption Line quasars at 1.6 GHz. They are all compact with linear sizes less than 1 kpc. The flat spectral source, J1556+3517, is unresolved at about 20 mas resolution, indicating that the orientation of the radio jet in this source is probably near the line of sight. J1312+2319 shows asymmetric two-sided structure on a scale of several hundred pc. This structure resembles that of Compact Symmetric Objects (CSO), however it has a bright central component at the present resolution. The jet orientation of J1312+2319 may be far from the line of sight. J0957+2356 is also unresolved, but with a steep spectrum, therefore the jet orientation in this source is unclear. These results are not consistent with the unification of BAL and non-BAL quasars by orientation.


Key words: galaxies: active -- galaxies: jets -- quasars: absorption lines -- quasars: general

Offprint request: D. R. Jiang, djiang@center.shao.ac.cn

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