Beide entpuppten sich als starke Gammaquellen, jedoch nicht bei Energien unterhalb derer aus dem Pionenzerfall.
"Mit der Detektion des Pion-Cutoffs haben wir nach langer Suche einen direkten Beweis, dass die Teilchen der kosmischen Strahlung in Supernova-Überresten beschleunigt werden", betont DESY-Forscher Rolf Bühler aus dem Team.
www.desy.deBoth turned out to be strong sources of gamma rays, but not at energies below what neutral pion decay would produce.
"With the detection of this pion cut-off we finally have the long sought direct evidence that cosmic rays are accelerated in supernova remnants," said DESY scientist Rolf Bühler from the research team.
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