Ultra-high energy Neutrinos from Centaurus A and the Auger hot spot

Understand

The Pierre Auger collaboration has reported a correlation between Ultra-High Energy Cosmic Rays (UHECR) and nearby Active Galactic Nuclei (AGNs) within 75 Mpc.

• Two of these events fall within 3 degrees from Centaurus A, the nearest AGN, clearly suggesting that this object is a strong UHECR emitter.
• Here we pursue this hypothesis and forecast the expected rate of ultra-high energy neutrinos in detectors like IceCube.
• In our baseline model we find a rate of 0.4--0.6 yr^-1 events above a threshold of 100 TeV, the uncertainty of which is mainly related to the poor knowledge of the physical parameters of the source and on the details of the model.