Read more: http://www.newscientist.com/article/dn16375?DCMP=youtube A new class of gamma-ray-only pulsars shows that the gamma rays must form in a broader region than the lighthouse-like radio beam. In this animation, the pulsar's radio beams (green) never intersect Earth, but its pulsed gamma rays (magenta) do. (Courtesy of NASA/Fermi/Cruz deWilde)
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