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AGN in the Fermi Era Science report from the AGN group

AGN in the Fermi Era Science report from the AGN group. C. Dermer (NRL). " curious straight ray " in M87 , "apparently connected with the nucleus by a thin line of matter" (Curtis 1918). 2LAC and beyond Radio- g Ray Connection GeV-TeV connection and EBL g -ray SED and Jet Physics

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AGN in the Fermi Era Science report from the AGN group

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  1. AGN in the Fermi EraScience report from the AGN group C. Dermer (NRL) "curious straight ray" in M87, "apparently connected with the nucleus by a thin line of matter" (Curtis 1918) • 2LAC and beyond • Radio-g Ray Connection • GeV-TeV connection and EBL • g-ray SED and Jet Physics • EGB and Cosmic Downsizing Fermi AGN Science Group coordinators: Justin Finke, Marco Ajello Steve Fegan FSRQs BL Lac Objects Radio Galaxies (Misaligned Sources) RLNL Sy1s 39 Cat I, 18 Cat II = 57 papers published, out of 125 (I) + 63 (II) = 189 total M87

  2. 1. 2nd LAT AGN Catalog (2LAC) • 2FGL (1873 sources; 1319 at |b|> 10°) 2LAC: 1017 AGNs at |b|> 10°, TS>25 2LAC Clean: 886 AGNs (46% larger than 1 LAC Clean) 2LAC threshold is ~5×10-12 erg/cm2-s • Probabilistic Association Method • Major Results: 1LAC and 2LAC • Small number of non-blazar AGNs • Redshift distributions and incompleteness • FSRQs: LSP; BL Lacs: LSPs. ISPs, HSPs • Variability properties similar • Detected HSP sources have harder spectra and lower γ -ray luminosity than LSP Ackermann et al. 2011 (2LAC) Cygnus A

  3. Spectral Index vs. Luminosity Correlation Gg vs. Lg (100 MeV – 5 GeV) star-forming vs. black hole misaligned vs. aligned Blazar sequence and divide Accretion or BZ Radiation Mechanism BL Lac redshift incompleteness Meyer et al, (2011) Padovani et al. (2012) Grandi (2011) Fossati et al. (2011)

  4. Misaligned Sources and Radio Galaxies FRI/FRII luminosity puzzle Fermi radio galaxies have large core dominance MAGN  2LAC 3C 78, 3C 111, and 3C 120 out Cen B, Fornax A, IC 310 in Cen A Abdo et al. ApJ, 2010 • NGC 6251 (Migliori et al. 2011) • 3C 111 (Grandi et al. 2012) • M87 (Ambramowski et al. 2012) Abdo et al., Science 2010

  5. 2. Radio/g-Ray Connection 2LAC Ackermann et al. 2012 2LAC Luminosity vs. Redshift: FSRQs vs. BL Lacs Luminosity Ratios Radio-Quiet Seyferts Radio-loudness parameter

  6. Ackermann et al. 2011 Radio/g-Ray Correlations • Luminosity Correlation • Flux Correlation (large scatter; EGB uncertainties) • Timing properties (OVRO) Lister et al. 2011 8 GHz archival

  7. 3. GeV/TeV Connection and the EBL • 35 GeV-TeV AGNs in 2LAC • Nearby radio galaxies • M87, Cen A, NGC 1275 • BL Lacs • mostly HSPs • low GeV flux BL Lacs useful for measuring IGMF • FSRQs • 3C 279, PKS 1510-089, 4C +21.35 • Only to VHE (not TeV) 1510-089 FSRQs 4C +21.35 3C 279 3C 66A NGC 1275 0716+714 1553+113 BL Lacs RGs 1ES 1101-232

  8. EBL Effects on Blazar Spectra 2LAC Dermer et al. 2011 Origin of hard component in deabsorbed BL Lac spectra? • GeV-TeV Spectral Index Difference DGStecker-Scully (2006, 2010) relation • Measurements of IGMF (>~ 10-15 G for persistent jet; >~10-18 G for jet active for observing period) • Halo constraints from IRF studies (M. Roth)

  9. 4. g Ray SED and Jet Physics Abdo et al. 2009 3C 454.3 Abdo et al. 2011a Mrk 501 Abdo et al. 2010 Abdo et al. 2011b 3C 279 Mrk 421 • BL Lacs: GeV spectrum and variability • FSRQs: • GeV Spectral Breaks

  10. Jet Physics Tanaka et al. 2011 • New classification scheme: LSP/ISP/HSP • BL Lacs vs. MAGNs: Synchrotron/SSC Model fits, but completely different Doppler factors Implications for Unification • Hypervariable BL Lacs and FSRQs • FSRQs: Rapid variability Location of the Emission Region The curious case of 4C +21.35 Rapid variability, large luminosity, intense absorption by ambient radiation fields Optical polarization angle swings: 3C 279, PKS 1510-089, OJ 287 • RLNLSy1s Evolutionary picture for origin of blazars

  11. 5. Extragalactic g-ray Background (EGB) and Downsizing • Anti-hierarchical behavior Seen in radio sources, radio-quiet AGNs, but not BL Lacs • Luminosity Downsizing ‘Down-sizing’ (Cowie et al. 1996) originally described how dominant star formation in galaxies shifted from luminous rare galaxies at earlier epochs to more numerous and less luminous galaxies at recent epochs (Wall et al. 2008) • 9.3% +1.6% - 1.0% (+- 3% systematic) of Fermi isotropic emission • Unification with FR2 radio galaxies Ajello et al. 2012 EGB (PRL 2010) does not include point source fluxes observed during first 10 months of Fermi mission. Lg > 4x1045 erg/s: 100 Gpc-3 L* spirals: ~5×106 FRI: ~35,000 FRII: ~2000 Gpc-3 <G> ~ 12; ~0.1% of parent population

  12. Pushing to the Limits of the Extreme Universe

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