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Astron. Astrophys. 338, 27-30 (1998)

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Correlation between the [FORMULA]-ray and the radio emissions

J.H. Fan 1, 2, G. Adam 2, G.Z. Xie 3, S.L. Cao 4, R.G. Lin 1 and Y. Copin 2

1 Center for Astrophysics, Guangzhou Normal University, Guangzhou 510400, China (jhfan@guangztc.edu.cn)
2 CRAL Observatoire de Lyon, 9 Avenue Charles André, F-69563 Saint-Genis-Laval Cedex, France
3 Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
4 Department of Astronomy, Beijing Normal University, Beijing, China

Received 19 March 1998 / Accepted 3 July 1998


In this paper, the correlation between the [FORMULA]-ray and the radio bands is investigated. The results show that there is a closer correlation between the [FORMULA]-ray emission and the high frequency (1.3mm, 230GHz) radio emission for maximum data than between the [FORMULA]-ray and the lower frequency (5GHz) radio emissions, which means that the [FORMULA]-ray is associated with the radio emission from the jet.

Key words: galaxies: active – quasars: general – gamma rays. observations – radio continuum: galaxies

© European Southern Observatory (ESO) 1998

Online publication: September 8, 1998