A Faraway Quasar in the Direction of the Highest Energy Auger Event

Understand

The highest energy cosmic ray event reported by the Auger Observatory has an energy of 148 EeV.

• It does not correlate with any nearby (z$<$0.024) object capable of originating such a high energy event.
• Intrigued by the fact that the highest energy event ever recorded (by the Fly's Eye collaboration) points to a faraway quasar with very high radio luminosity and large Faraday rotation measurement, we have searched for a similar source for the Auger event.
• We find that the Auger highest energy event points to a quasar with similar characteristics to the one correlated to the Fly's Eye event.