VLBI Structures of Extragalactic Radio Sources at High Frequencies

TIAN Wen-wu; WU Sheng-yin; ZHANG Hai-yan

Publications of the Yunnan Observatory > 2001 > 0(2): 1-9.

TIAN Wen-wu, WU Sheng-yin, ZHANG Hai-yan. VLBI Structures of Extragalactic Radio Sources at High Frequencies[J]. Publications of the Yunnan Observatory, 2001, (2): 1-9.

Citation:

TIAN Wen-wu, WU Sheng-yin, ZHANG Hai-yan. VLBI Structures of Extragalactic Radio Sources at High Frequencies[J]. Publications of the Yunnan Observatory, 2001, (2): 1-9.

Citation:

TIAN Wen-wu, WU Sheng-yin, ZHANG Hai-yan. VLBI Structures of Extragalactic Radio Sources at High Frequencies[J]. Publications of the Yunnan Observatory, 2001, (2): 1-9.

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VLBI Structures of Extragalactic Radio Sources at High Frequencies

1.
Beijing Astronomical Observatory, National Astronomical Observatories, The Chinese Academy of Sciences, Beijing 100012
2.
Joint Astrophysical Research Center of CAS and Peking University, Beijing 100

More Information

Received Date: July 13, 2000
Revised Date: October 29, 2000
Published Date: April 14, 2001

Graphical Abstract

Abstract

Abstract

VLBI observations at high frequencies show that most of extragalactic radio sources have a nucleus-jet structure on pc or sub-pc scales. Especially for flat-spectrum compact radio sources, the milli-arcsecond components with apparent superluminal velocity are detected with high probability. Multi-frequency observations monitor the new jet component production. Especially for radio OVV, the jet components have a tight relation with correlated broad-band(from optical to γ-ray) flux outbursts. The spectrum index distribution in some radio sources has been obtained, which makes it possible to identify the VLBI cores of these sources.
- VLBI observations,
- high frequencies

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