Neutrino emission from blazars and predictions for IceCube

Maria Petropoulou (Purdue University) - May 16, 2016 at 12:10 pm

The recent IceCube discovery of 0.1-2 PeV neutrinos of astrophysical origin initiates a new era for high-energy astrophysics. There are various astrophysical candidate sources, including active galactic nuclei (AGN) and starburst galaxies. Yet, a firm association of the detected neutrinos with one (or more) of them is still lacking. This talk investigates the neutrino emission from BL Lacs, a sub-class of radio-loud AGN. We present the results from leptohadronic modeling of six individual BL Lacs, including the closest to Earth, Mrk 421, that were recently selected as probable counterparts of the IceCube neutrinos. We then present the cumulative neutrino emission from BL Lacs, which was calculated by incorporating our results from the modeling of individual sources to Monte Carlo simulations for the blazar evolution. Since blazars are intrinsically variable sources across the electromagnetic spectrum, we finally investigate the potential for neutrino detection from the closest to Earth blazar, i.e. Mrk 421, during periods of flaring activity.

The seminar will be held in 131A Campbell Hall.

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