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The jet–disc connection in blazars & blazars at high redshift

Tullia Sbarrato
September 13, 2012

The jet–disc connection in blazars & blazars at high redshift

Talk at the Italian AGN meeting AGN10: "Dall’orizzonte degli eventi all’orizzonte cosmologico'', held in Rome (Italy)

Tullia Sbarrato

September 13, 2012
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  1. The jet‐disc connec.on in blazars & blazars at high redshi6

    Tullia Sbarrato Universita’ degli Studi dell’Insubria INAF OABrera – Merate AGN10 ‐ Roma, 2012 September 10‐13
  2. Jet and disc tracers jet power (Pj ) disc emission

    (M, MBH ) LBLR Lγ •  SDSS DR7 Quasar Catalog (Schneider et al. 2010) analysed by Shen et al. (2011) •  Plotkin et al. (2011) •  SDSS DR6 (Adelman‐McCarthy et al. 2008) Clean 1LAC sample (Abdo et al. 2010)
  3. BLR vs gamma‐ray luminosity 60 FSRQs opTcally selected from Ghisellini

    et al. 2011 and Shen et al. 2011 103 BL Lacs: 18 with both L det, 23 UL on LBLR , 62 UL on both L from Ghisellini et al. 2011, Plotkin et al. 2011 and Adelmann‐McCarthy et al. 2008 5 x 10‐4 Sbarrato et al. (2012a)
  4. Ld = ηMc2 Is this correla.on expected? Good correla.on: Inverse

    Compton on BLR photons? deeper connecTon? accre.on? Mahadevan (1997)
  5. Ld = ηMc2 Is this correla.on expected? Good correla.on: Inverse

    Compton on BLR photons? deeper connecTon? accre.on? M Mahadevan (1997)
  6. Is this correla.on expected? Good correla.on: Inverse Compton on BLR

    photons? deeper connecTon? accre.on? Ghisellini et al. 2010
  7. Is this correla.on expected? Good correla.on: Inverse Compton on BLR

    photons? deeper connecTon? accre.on? we expect a break! Log Pjet / Ledd
  8. Jets and discs at high redshi6 G. Ghisellini, M. Nardini,

    G. Tagliaferri, L. Foschini, G. Ghirlanda, F. Tavecchio, J. Greiner, A. Rau, N. Gehrels
  9. Blazars at high redshi6 •  intrinsic high luminosity & beaming

    of jet likely visible at very high redshia •  each blazar counts for 2Γ2 (~400) analogous AGN not aligned •  most powerful quasars host most massive BH search of high‐z blazars is compe88ve with search of high‐z radio‐quiet AGN to study most massive early BH
  10. The discovery of a blazar at z=5.3 Sbarrato et al.

    (2012b) MBH es8mate: see talk by Giorgio Calderone!
  11.   LBLR ∝ Lγ (normalized to LEdd )   blazars’

    divide: LBLR =5x10‐4LEdd (new classificaTon!)   different accre.on regimes responsible for the blazars’ divide?   search of high‐z blazars search of very massive early BH   we found a blazar at z=5.3 with a systema.c approach Conclusions