Citation | Distinguished for his work on cosmic rays of the highest energy Alan Watson played a central role in the construction and operation of the Extensive Air Shower Array at Haverah Park, an array which led the world for two decades in studies of cosmic rays of the highest energies. Notable firsts included the demonstration that the energy spectrum did not fall at a few times 10(19)eV as expected from interactions of the extragalactic particles with the Cosmic Microwave Background. Other work has included studies of cosmic rays in the inhospitable region of the South Pole. Watson is co-spokesperson, with JW Cronin from Chicago, of the Pierre Auger Observatory |