Connection between radio and high energy emission in AGN

Geoffrey Bicknell

    Research output: Contribution to journalMeeting Abstractpeer-review


    The correlation between radio and X-ray emission in a sample of radio-quiet and radio-loud active galaxies (Panessa et al, 2007, 2011) informs us about the relationship between two quite different processes related to accretion the production of jets and the dissipation of gravitational power in a hot corona. It is likely that the radio luminosity is a proxy for the jet power so that the ratio of jet power to coronal luminosity ranges from about 0.01 in radio-quiet sources to about unity in radio-loud objects. In at least some powerful radio-loud sources such as blazars and radio-loud quasars there is strong evidence that the X-ray emission originates from the jet. In one case Centaurus A there is evidence that the X-ray emission from the southern jet is responsible for photoionization of clouds within a few parsecs of the nucleus of Centaurus A.
    Original languageEnglish
    Pages (from-to)186pp
    Journal39th COSPAR Scientific Assembly 2012
    Publication statusPublished - 2012
    Event39th COSPAR Scientific Assembly 2012 - Mysore, India
    Duration: 1 Jan 2012 → …


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