Can we reconcile the TA excess and hotspot with Auger observations?

Understand

The Telescope Array (TA) shows a 20$^{\circ}$ hotspot as well as an excess of UHECRs above 50~EeV when compared with the Auger spectrum.

• We consider the possibility that both the TA excess and hotspot are due to a dominant source in the Northern sky.
• We carry out detailed simulations of UHECR propagation in both the intergalactic medium and the Galaxy, using different values for the intergalactic magnetic field.
• We consider two general classes of sources: transients and steady, adopting a mixed UHECR composition that is consistent with the one found by Auger.