13-18 December 2015
International Conference Centre Geneva
Europe/Zurich timezone

Correlated neutrino and photon emission during γ-ray flares from the blazar Mrk 421

17 Dec 2015, 14:00
Level 0, Room 4 (International Conference Centre Geneva)

Level 0, Room 4

International Conference Centre Geneva


Dr Maria Petropoulou (Purdue University)


Blazars, being highly variable sources across the electromagnetic spectrum, may serve as promising targets for high-energy neutrino detection, especially during periods of flaring activity. Using as a testbed the nearby blazar Mrk 421, we present a detailed hadronic model of its emission during a 13-day flare in 2010 with unprecedented multi-wavelength and temporal coverage. We calculate the expected muon neutrino event rate observed by IceCube at energies >1 PeV, and compare it with that expected from a longer, yet non-flaring, period of emission. After applying the derived correlation between the >1 PeV neutrino and 0.1-300 GeV emission to the long-term Fermi/LAT light curve of Mrk 421, we calculate the expected number of muon neutrino events above 1 PeV within 5 years of full IceCube detector livetime and discuss the implications of the results.

Primary author

Dr Maria Petropoulou (Purdue University)


Dr Stavros Dimitrakoudis (University of Alberta) Mr Stefan Coenders (Technische Universitaet Muenchen)

Presentation Materials