From Italy based on Auger

A group of italian physicists have this to say:

"Since the instrumental spread of the detector is about 1 degree or better, the deflection is mostly due to the effect of the intervening magnetic field, and this offers for the first time the possibility to set experimental constraints on large-scale magnetic fields."

This is a new era for Astronomy!

Read their article in:

CONTRAINTS ON LARGE-SCALE MAGNETIC FIELDS FROM THE AUGER RESULTS

θ ≃ 0.25^o (d/λ)^1/2(λ /1 Mpc)(B /1 nG) (10²⁰eV/E)

This formula tells us that if the experimental resolution is of the order of 1/4^o, then we are in business. We can calculate the magnitude of the magnetic field with:

B ≃ 0.9 (1 Mpc/ λ)^1/2 nG

Where λ is the size of the domains in intergalactic space.