I'm sure it's been done. Anisotropic studies of UHECRs is a very popular thing to do for UHECR experiments, almost as popular as looking for neutrinos. I worke

I'm sure it's been done. Anisotropic studies of UHECRs is a very popular thing to do for UHECR experiments, almost as popular as looking for neutrinos. I worked at such an experiment for 4 years.