Dec 11 – 15, 2023
Tsung-Dao Lee Institute
Asia/Shanghai timezone

Constraining the Sources of UHECRs

Dec 15, 2023, 9:41 AM
Hall # 1

Hall # 1

Invited/Solicited talk in mini-symposium Astroparticle


Glennys Farrar (New York University)


UHECRs are composed of intermediate-mass nuclei and have a composition evolution with energy that is roughly consistent with a Peters Cycle, such that the mean rigidity is less than 5 EV, even at relatively high energy. Deflections in the Galactic magnetic field are in general large, and identifying sources by angular correlations has been impossible so far. Nonetheless, a number of indirect constraints can help narrow the range of candidate UHECR accelerators, as I will discuss.

Primary author

Glennys Farrar (New York University)

Presentation materials