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《Progress In Astronomy》 1995-01
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The Compact Radio Cores-An Overview

Wu Shengyin(Beijing Astronomjcal Observatory The Chinese Academy of Sciences, Beijing 100080)  
Multiband observations and studies of the active galactic nuclei (AGN) have be-come one of the most fascinating frontiers in astrophysics since the 1970 s. In radio astronomy, the AGNs are generally assumed to be coincident with the compact radio cores (CRC) in extragalactic sources. The senses, the classification, the overall spectra, the radio strllctures and properties of the AGNs and CRCs are reviewed in this paper.The "standard model" and the important role of the VLBI in understanding the AGNs are outlined briefly. Some recent results and prospect are introduced in the last part of the paper. The emphaJsis is put on observed and studied results of the CRCs by using radio astronomical facilities throughout the paper.
【Fund】: 国家自然科学基金
【CateGory Index】: P14
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