Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cha%26a..33..251q&link_type=abstract
Chinese Astronomy and Astrophysics, Volume 33, Issue 3, p. 251-255.
Astronomy and Astrophysics
Astrophysics
Scientific paper
Using the Very Long Baseline Array of the USA, we have made the double-band full-polarization observations towards the compact steep-spectrum source 1150+497, and obtained the distributions of the polarization flux intensity and polarization vector of this source at the 5 GHz and 8 GHz wave bands. The results show that the polarization of the source is mostly concentrated in the core region. Besides, by fitting the polarization angles at three frequencies, the milliarcsecond-scale rotation measure of the source 1150+497 is derived to be 66 rad/m2 for the first time. After removing the ratation measure, the distribution of intrinsic magnetic fields of the source on milliarcsecond scale is obtained. It demonstrates that the direction of the magnetic vector is consistent with the direction of its jet.
Nan Ren Dong
Qi Jing-Wu
Zhang Hai-Yan
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