Breaking the Blazar Sequence: A New View of Radio Loud AGN Unification
dc.contributor.author | Meyer, Eileen T. | |
dc.contributor.author | Fossati, Giovanni | |
dc.contributor.author | Georganopoulos, Markos | |
dc.contributor.author | Lister, Matthew L. | |
dc.date.accessioned | 2020-08-25T15:46:53Z | |
dc.date.available | 2020-08-25T15:46:53Z | |
dc.date.issued | 2012-05-03 | |
dc.description | 2011 Fermi & Jansky: Our Evolving Understanding of AGN, St Michaels, MD, Nov. 10-12 | en_US |
dc.description.abstract | In recent work, we have identified two sub-populations of radio-loud AGN which appear to be distinguished by jet structure, where low-efficiency accreting systems produce `weak' jets which decelerate more rapidly than the `strong' jets of black holes accreting near the Eddington limit. The two classes are comprised of: (1) The weak jet sources, corresponding to FR I radio galaxies, having a decelerating or spine-sheath jet with velocity gradients, and (2) The strong jet sources, having fast, collimated jets, and typically displaying strong emission lines. The dichotomy in the \nu_peak-L_peak plane can be understood as a `broken power sequence' in which jets exist on one branch or the other based on the particular accretion mode. We suggest that the intrinsic kinetic power (as measured by low-frequency, isotropic radio emission), the orientation, and the accretion rate of the SMBH system are the the fundamental axes needed for unification of radio-loud AGN by studying a well-characterized sample of several hundred Fermi-detected jets. Finally, we present very recent findings that the most powerful strong jets produce gamma-rays by external Compton rather than SSC emission, placing the dissipation region in these strong jets at a radius inside the BLR and/or molecular torus. | en_US |
dc.description.sponsorship | GF and EM acknowledge support from NASA grants NNG05GJ10G, NNX06AE92G, and NNX09AR04G, as well as SAO grants GO3-4147X and G05-6115X. MG acknowledges support from the NASA ATFP grant NNX08AG77G and NASA FERMI grant NNH08ZDA001N. The MOJAVE project is supported under National Science Foundation grant 0807860-AST. | en_US |
dc.description.uri | https://arxiv.org/abs/1205.0794 | en_US |
dc.format.extent | 7 pages | en_US |
dc.genre | conference papers and proceedings preprints | en_US |
dc.identifier | doi:10.13016/m2uswc-ov84 | |
dc.identifier.citation | Eileen T. Meyer, Giovanni Fossati, Markos Georganopoulos and Matthew L. Lister, Breaking the Blazar Sequence: A New View of Radio Loud AGN Unification, https://arxiv.org/abs/1205.0794 | en_US |
dc.identifier.uri | http://hdl.handle.net/11603/19505 | |
dc.language.iso | en_US | en_US |
dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
dc.relation.ispartof | UMBC Physics Department Collection | |
dc.relation.ispartof | UMBC Joint Center for Earth Systems Technology (JCET) | |
dc.relation.ispartof | UMBC Faculty Collection | |
dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | |
dc.title | Breaking the Blazar Sequence: A New View of Radio Loud AGN Unification | en_US |
dc.type | Text | en_US |