we study them? • jet power vs. accretion power • looking for different accretion regimes Outline large catalogs! gamma-rays radio MG14, Roma 14th July 2015
Ghisellini et al. 2015, Nature jet power is proportional to accretion power yet it is larger!! BH rotation must play a role in jet production through magnetic field!
Sample: Fermi-detected blazars with broad emission lines LEGs with upper limits on broad lines 267 blazars 38 LEGs (Buttiglione et al. 2010) radio luminosity traces jet power in all AGN not only blazars radio—galaxies can be used to explore the low accretion rate regime
Sample: Fermi-detected blazars with broad emission lines LEGs with upper limits on broad lines 267 blazars 38 LEGs (Buttiglione et al. 2010) radio luminosity traces jet power in all AGN not only blazars radio—galaxies can be used to explore the low accretion rate regime Be careful with Beaming!
power depends on accretion rate, but it is not influenced by accretion regime if the jet is not determined by the shape and regime of the accretion flow, then why some AGN have a jet and some have not? Can Spin determine the presence of a jet? Why? How is it possible?
jet power is proportional to and yet larger than accretion power • by comparing radio and BLR luminosities in both blazars and radio—galaxies, we observe that: jetted AGN can show different accretion regimes depending on their the transition between a radiatively efficient accretion disk and a non-efficient accretion flow occurs at Conclusions MG14, Roma 14th July 2015 LBLR LEdd ⇠ 5 ⇥ 10 4 maybe BH rotation has a role in jet launching? Why some AGN have a jet and some don’t?