... About ATNF overview . ... Parkes radio telescope . ... As a check on the properties of propagation in the turbulent field, we ran the program with a purely random field. ... In reaching the distance of the Earth from the Galactic Centre, a particle must travel through systematic fields which tend to deflect it away from the galactic plane. ... With our best model of the field and the position of the Earth, about one particle in one thousand reached the galactocentric distance of the Earth at . ...