Hot spot of cosmic rays

Cosmic rays are very energetic charged particles produced in many places out in space which are constantly bombarding the Earth, just like photons - light particles. However, unlike photons, the paths of these particles are bent by the various magnetic fields which surround the Earth, fill our Solar System, stretch between stars, etc. Due to this bending, one expects cosmic rays to come equally from all regions of the sky assuming their original sources are fairly far away. However, there is mounting evidence that this isn't what is observed, as you can read here and here. Why? No one knows, though a nearby supernova remnant may provide some of the answer. Yet another mystery to be solved.