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High frequency radio observations of the nucleus of Cen A

Published online by Cambridge University Press:  25 May 2016

Zulema Abraham
Zulema Abraham*
Affiliation:
Instituto Astronômico e Geofísico, Universidade de São Paulo CP 9638, 01065-970, São Paulo, SP, Brazil

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Cen A (NGC5128) is a giant radio galaxy that in several ways behaves like a weak active galactic nucleus. It presents three pairs of radio lobes and a compact core with a one sided jet (Jauncey et al. 1995). The compact core is highly variable in wavelengths ranging from the radio region to X and γ rays (Kinzer et al. 1995). In the radio domain, the emission from the core dominates at high frequencies and a considerable effort was made to study variability at 22 and 43 GHz for more than ten years (Botti & Abraham 1995).

Type
Properties of Radio Sources
Information
Symposium - International Astronomical Union , Volume 175: Extragalactic Radio Sources , 1996 , pp. 25 - 26
Copyright
Copyright © Kluwer 1996 

References

Botti, L.C.L., Abraham, Z. (1993) Long-term radio observation of the nucleus of NGC5128 (Centaurus A), MNRAS , 264, 807–812 Google Scholar
Jauncey, D.L. et al. (1995) Sub-Parsec Scale Structure and Evolution of Centaurus A (NGC5128) Quasars and AGN: High Resolution Radio Imaging. National Academy of Sciences Pub., in press.Google Scholar
Kinzer, R.L. et al. (1995) OSSE observations of gamma-ray emission from Centaurus A, ApJ , 449, 105–118 Google Scholar