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Accession Number N20120010410
Title Toward a New Paradigm for the Unification of Radio Loud AGN and its Connection to Accretion.
Publication Date 2012
Media Count 4p
Personal Author E. T. Meyer G. Fossati M. Georganpoulos M. L. Lister
Abstract We recently argued 21J that the collective properties. of radio loud active galactic nuclei point to the existence of two families of sources, one of powerful sources with single velocity jets and one of weaker jets with significant velocity gradients in the radiating plasma. These families also correspond to different accretion modes and therefore different thermal and emission line intrinsic properties: powerful sources have radiatively efficient accretion disks, while in weak sources accretion must be radiatively inefficient. Here, after we briefly review of our recent work, we present the following findings that support our unification scheme: (i) along the broken sequence of aligned objects, the jet kinetic power increases. (ii) in the powerful branch of the sequence of aligned objects the fraction of BLLs decreases with increasing jet power. (iii) for powerful sources, the fraction of BLLs increases for more un-aligned objects, as measured by the core to extended radio emission. Our results are also compatible with the possibility that a given accretion power produces jets of comparable kinetic power.
Keywords Accretion disks
Active galactic nuclei
Radio emission
Thermal emission
Velocity distribution

Source Agency National Aeronautics and Space Administration
NTIS Subject Category 54C - Astrophysics
46G - Plasma Physics
Corporate Author Goddard Space Flight Center, Greenbelt, MD.
Document Type Journal article
Title Note N/A
NTIS Issue Number 1226
Contract Number N/A

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