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Neutrinos from blazar PKS 1502+106

Not scheduled


Dr Xavier Rodrigues (DESY Zeuthen)


The source PKS 1502+106, a flat-spectrum radio quasar (FSRQ) located at redshift 1.84, is the fifteenth brightest known gamma-ray blazar. Theoretically, these sources are expected to be potential cosmic ray accelerators and efficient high-energy neutrino emitters. In July 2019, the IceCube experiment, located in the South Pole, detected a 300 TeV neutrino from a direction consistent with PKS 1502+106. While the source was not undergoing exceptional activity in gamma rays at the time of the detection, it was flaring in the radio band, and emitting a hard Xray spectrum. In this work we simulate the multi-wavelength emission of PKS 1502+106 using a self-consistent numerical model. We provide a comprehensive analysis both on the neutrino-emitting phase and past observations, suggesting the gamma-ray signals may be synchrotron radiation co-produced along with the neutrinos by the same cosmic-ray protons.


Cosmic-ray interactions in blazar PKS 1502+106 may help explain recent IceCube neutrino observation.

Primary author

Dr Xavier Rodrigues (DESY Zeuthen)


Anna Franckowiak (SLAC) Dr Shan Gao (DESY Zeuthen) Mr Simone Garrappa (DESY Zeuthen) Dr Vaidehi Paliya (DESY Zeuthen) Walter Winter (DESY)

Presentation materials