Research
Astroparticle physics, or particle astrophysics is a branch of particle physics that studies elementary particles of astronomical origin, and their relation to astrophysics and cosmology. Presently, the fields of gamma and neutrino astronomy are expanding rapidly. Astronomy with cosmic rays however, is a different matter. Irregular interstellar and intergalactic magnetic fields randomize the directions of charged cosmic rays. Only particles at very high energies travel along approximately straight lines through magnetic fields. This makes astronomy with charged particles possible, if the intensity of energetic primaries is sufficiently high. (From Astroparticle Physics written by Claus Grupen) |