The blazar paradigm and its discontents
作者： C. D. Dermer
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摘要: The standard blazar paradigm consists of a supermassive black hole that expels relativistic jets magnetized plasma in our direction. This entrains nonthermal synchrotron-emitting electrons furthermore scatter internally-produced synchrotron photons as well externally-produced from the accretion-disk, broad-line region, and infrared-emitting torus. picture has been very successful reproducing two-humped spectral energy distribution. Yet various discontents persist, including (1) ultra-short variability at TeV energies is much shorter than hole's dynamical timescale; (2) very-high (VHE; >100 GeV) radiation FSRQs; (3) evidence for hard component high-synchrotron peaked objects, found when deabsorbing measured VHE spectrum using conventional extragalactic background light (EBL) models; (4) an unusual slowly varying class BL Lac objects; (5) location gamma-ray emission region. Some these problems can be resolved by introducing hadronic into paradigm, consistent with hypothesis blazars are sources ultra-high cosmic rays. Gamma-ray observations Cherenkov Telescope Array neutrino IceCube will important to test this hypothesis.
arxiv.org参考文章(12)
Henric Krawczynski, Daniel E. Harris, Markus Boettcher, Relativistic Jets from Active Galactic Nuclei rjag. ,(2012)
Matteo Cerruti, VERITAS results from a three-year observing campaign on the BL Lac object 1ES 0229+200 arXiv: High Energy Astrophysical Phenomena. ,(2013)
Svetlana G. Jorstad, Alan P. Marscher, Rapid Variability of Gamma-ray Emission from Sites near the 43 GHz Cores of Blazar Jets arXiv: Cosmology and Nongalactic Astrophysics. ,(2010)
A. P. Marscher, T. L. Scott, I. Agudo, N. R. MacDonald, S. G. Jorstad, Relation between Events in the Millimeter-wave Core and Gamma-ray Outbursts in Blazar Jets arXiv: High Energy Astrophysical Phenomena. ,(2012)
Boris E. Stern, Juri Poutanen, The mystery of spectral breaks: Lyman continuum absorption by photon-photon pair production in the Fermi GeV spectra of bright blazars arXiv: High Energy Astrophysical Phenomena. ,(2014) , 10.1088/0004-637X/794/1/8
Mark G Aartsen, M Ackermann, J Adams, JA Aguilar, M Ahlers, M Ahrens, D Altmann, T Anderson, C Arguelles, TC Arlen, J Auffenberg, X Bai, SW Barwick, V Baum, JJ Beatty, J Becker Tjus, K-H Becker, S BenZvi, P Berghaus, D Berley, E Bernardini, A Bernhard, DZ Besson, G Binder, D Bindig, M Bissok, E Blaufuss, J Blumenthal, David J Boersma, Christian Bohm, D Bose, S Böser, Olga Botner, L Brayeur, H-P Bretz, AM Brown, J Casey, M Casier, D Chirkin, A Christov, B Christy, K Clark, L Classen, F Clevermann, S Coenders, DF Cowen, AH Cruz Silva, Matthias Danninger, J Daughhetee, JC Davis, M Day, JPAM De Andre, C De Clercq, Sam De Ridder, P Desiati, KD De Vries, M de With, T DeYoung, JC Díaz-Vélez, M Dunkman, R Eagan, B Eberhardt, B Eichmann, J Eisch, S Euler, PA Evenson, O Fadiran, AR Fazely, A Fedynitch, J Feintzeig, J Felde, T Feusels, K Filimonov, C Finley, T Fischer-Wasels, S Flis, A Franckowiak, K Frantzen, T Fuchs, TK Gaisser, J Gallagher, L Gerhardt, D Gier, L Gladstone, T Glüsenkamp, A Goldschmidt, G Golup, JG Gonzalez, JA Goodman, D Góra, DT Grandmont, D Grant, P Gretskov, JC Groh, A Groß, C Ha, C Haack, A Haj Ismail, P Hallen, A Hallgren, F Halzen, K Hanson, D Hebecker, D Heereman, D Heinen, K Helbing, R Hellauer, D Hellwig, S Hickford, GC Hill, KD Hoffman, R Hoffmann, A Homeier, K Hoshina, F Huang, W Huelsnitz, PO Hulth, K Hultqvist, S Hussain, A Ishihara, E Jacobi, J Jacobsen, K Jagielski, GS Japaridze, K Jero, O Jlelati, M Jurkovic, B Kaminsky, A Kappes, T Karg, A Karle, M Kauer, JL Kelley, A Kheirandish, J Kiryluk, J Kläs, SR Klein, J-H Köhne, G Kohnen, H Kolanoski, A Koob, L Köpke, C Kopper, S Kopper, DJ Koskinen, M Kowalski, A Kriesten, K Krings, G Kroll, J Kunnen, None, Observation of high-energy astrophysical neutrinos in three years of icecube data Physical Review Letters. ,vol. 113, pp. 101101- 101101 ,(2014) , 10.1103/PHYSREVLETT.113.101101
Kohta Murase, Yoshiyuki Inoue, Charles D. Dermer, Diffuse neutrino intensity from the inner jets of active galactic nuclei: Impacts of external photon fields and the blazar sequence Physical Review D. ,vol. 90, pp. 023007- ,(2014) , 10.1103/PHYSREVD.90.023007
D. Guetta, G. Ghisellini, F. Tavecchio, Structured jets in BL Lac objects: efficient PeV neutrino factories? arXiv: High Energy Astrophysical Phenomena. ,(2014) , 10.1088/2041-8205/793/1/L18
Gabriele Ghisellini, Jets, black holes and disks in blazars arXiv: High Energy Astrophysical Phenomena. ,(2013) , 10.1051/EPJCONF/20136105001
Kohta Murase, Charles D. Dermer, Yoshiyuki Inoue, Photopion Production in Black-Hole Jets and Flat-Spectrum Radio Quasars as PeV Neutrino Sources arXiv: High Energy Astrophysical Phenomena. ,(2014)