Some interesting Blazars observed by AGILE

1. Some interesting Blazars observed by AGILE Valerio Vittorini (INAF-IASF Roma) on behalf of the AGILE Team and A. Paggi, A. Cavaliere (Univ. Tor Vergata)

2. AGN model External: cosmological frame (z) radiation connected with accretion Jet: jet-frame ( G ) beamed, non thermal radiation Electron distributionne(g;gb)and magnetic fieldB produce Synchrotron + Inverse Compton (SSC) External photons N’ext and ne(g;gb)produce External Compton (EC)

3. Self-Compton Synchrotron tdel Contribution to the SED External Compton

4. Self-Compton Synchrotron tdel Variability patterns rs=esF(es;t) / esF(es;t0) rc=ecF(ec;t+tdel) / ecF(ec;t0+tdel) External Compton

5. Self-Compton Synchrotron SSC signature!! Variability pattern: 0716+714 tdel External Compton

6. The remarkable BL Lac0716+714(z=0.31) Sept - Oct 2007 • A very prominent BL Lac (S.Wagner et al. 1996; U. Bach et al. 2005) • OVV • Weak or absent disk component (no lines) • BH mass uncertain, in the range 108-109 Msun • detected by AGILE several times, including two of the strongest gamma-ray flare (so far) from a BL Lac

7. PKS 0716+714

8. AGILE-GRID, Sept. 2007

9. The remarkable BL Lac0716+714(z=0.31) Sept - Oct 2007 1) rg vs roptargues for SSC. 2)We need two components to account for the g-flare and the complex multi-band variability (see also Giommi et al. 08). 3)The day duration constraints R < 5e16 (d/20) cm, whereas the very intense and hard g spectrum and the relative peaks position in the SED require a II component withgb > 6e3 and G 15. 4)The total jet power in the jet-frame P = LB + Lkin + Lrad exceeds3e45 erg s-1cm-2 . Figs. by Chen et al. 2008

10. SED 1) the hardness of the g-spectrum 2) the faint variability in hard-X ray accompanied by strong variations in the radio, optical and soft-X ray fluxes Argue for a two-components model (see, e.g., Tavecchio & Ghisellini 2009) Standard one-zone model Two components with differentGandgb. (black line is the sum) Vittorini et al. 2009 to appear in ApJ

11. 4x1045erg s-1 …that rises to 1046erg s-1 in the one component model This is to be compared with the limit set by the Blandford-Znajek (1977) mechanism to the power extraction from a rotating BH: Observed g fluxes BL Lac Mrk 421 0716 W Comae Courtesy of A. Paggi and A. Cavaliere Radiated luminosities

12. The remarkable FSRQ 3C 454(z=0.859) Dec 2007 1) The wide, sinultaneous frequency coverage constrains very well the model. 2) This state shows a moderate and soft IR-optical bump with a strong and hard g-ray 3) Low electron energies (g 300) are required by IR-Optical, UV and X-ray data, despite of the hard g-ray spectrum 4) This requires a further component of hot (T 106oK) seed photons entering on-side into the jet, maybe the hot corona Donnarumma et al. 2009 to appear in ApJ

14. The remarkable BL Lac0716+714(z=0.31) Sept - Oct 2007 1)rg vs roptargues for SSC. 2)We need two components to account for the g-flare and the complex multi-band variability (see also Giommi et al. 08). 3)The day duration constraintsR < 5e16 (d/20) cm, whereas the very intense and hard g spectrum and the relative peaks position in the SED require a II component withgb > 6e3 and G 15. 4) with these ingredients the total jet power P = LB + Lkin + Lrad exceeds3e45 erg s-1cm-2 in the jet-frame. Figs. by Chen et al. 2008