Talk detail

Participant	Padovani, Paolo
Institution	ESO - Karl-Schwarzschild-Str. 2 - Garching - - Germany

Session	HE2	Accepted	Yes	Order	4	Time	15:10	15'
Talk	Oral abstract	Title	BL Lacs as counterparts of IceCube neutrinos
Coauthors	M. Petropoulou, E. Resconi, P. Giommi
Abstract	We make the case for BL Lacertae objects to be the counterparts of at least some of the IceCube neutrinos based on: 1. a joint positional and energetic diagnostic that makes use of high-energy source catalogues and 2. a theoretical modelling of their spectral energy distributions within a lepto-hadronic scenario. We then extrapolate our findings from individual sources to the whole BL Lac class by employing sophisticated Monte Carlo simulations, which reproduce all the main properties of these sources in the radio, X-ray, and gamma-ray bands. We present a detailed calculation of the neutrino astrophysical background (diffuse intensity) from the whole BL Lac class, and discuss its specific predictions, which should be testable in the next few years by further IceCube data.
Pdf file

Session	GN2	Accepted	Yes	Order	6	Time	16:30	20'
Talk	Oral abstract	Title	The simplified view of blazars: explaining blazar properties over the whole electromagnetic spectrum
Coauthors	Giommi, Paolo
Abstract	We have recently proposed the "blazar simplified view", that is a paradigm that explains the diverse statistical properties of blazars adopting minimal assumptions on blazars' physical and geometrical properties. I will describe this view, present the principles on which it is built, and then concentrate on its remarkable success in explaining the properties of blazars detected in radio, X-ray, and gamma-ray surveys, and the gamma-ray background above 10 GeV. Finally, I will illustrate its predictions for the very high energy gamma-ray band, relevant for CTA.
Pdf file