Electron–positron jets associated with the quasar 3C279

  title={Electron–positron jets associated with the quasar 3C279},
  author={J. F. C. Wardle and D. C. Homan and Roopesh Ojha and David H. Roberts},
A long-standing question in extragalactic astrophysics is the composition of the relativistic jets of plasma that stream from the nuclei of quasars and active galaxies—do they consist of a ‘normal’ (electron–proton) plasma, or a ‘pair’ (electron–positron) plasma? Distinguishing between these possibilities is crucial for understanding the physical processes occurring close to the putative supermassive black holes that are believed responsible for the jets. Here we report the detection of… 

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