VERY LONG BASELINE ARRAY MULTI-FREQUENCY POLARIMETRIC IMAGING OF RADIO-LOUD BROAD ABSORPTION LINE QUASARS

被引：13
作者：
Hayashi, Takayuki J. [1 ,2 ]
Doi, Akihiro [3 ,4 ]
Nagai, Hiroshi [1 ]
机构：
[1] Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan
[2] Univ Tokyo, Dept Astron, Bunkyo Ku, Tokyo 1330033, Japan
[3] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Chuo Ku, Sagamihara, Kanagawa 2525210, Japan
[4] Grad Univ Adv Studies, Dept Space & Astronaut Sci, Chuo Ku, Sagamihara, Kanagawa 2298510, Japan
来源：
ASTROPHYSICAL JOURNAL | 2013年 / 772卷 / 01期
关键词：
accretion; accretion disks; galaxies: active; quasars: absorption lines; radio continuum: galaxies; techniques: interferometric; HIGH-FREQUENCY PEAKERS; DRIVEN DISK WINDS; POLARIZATION PROPERTIES; ROTATION MEASURES; TERM VARIABILITY; MAGNETIC-FIELD; SKY; JET; SPECTRUM; DYNAMICS;
D O I：
10.1088/0004-637X/772/1/4
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We conducted the first multi-frequency polarimetric imaging of four broad absorption line (BAL) quasars using the Very Long Baseline Array at milliarcsecond resolutions to investigate the inclination of the nonthermal jet and test the hypothesis that radio sources in BAL quasars are still young. Among these four sources, J0928+446, J1018+0530, and J1405+4056 show one-sided structures in parsec scales and polarized emission detected in the core. These characteristics are consistent with those of blazars. We set constraints on viewing angles to <66 degrees for these jets in the framework of a Doppler beaming effect. J1159+0112 exhibits an unpolarized gigahertz-peaked spectrum component and several discrete blobs with steep spectra on both sides of the central component across similar to 1 kpc. These properties are consistent with those of young radio sources. We discuss the structures of jets and active galactic nucleus wind.
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页数：11
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