A counterjet in the elliptical galaxy M87

@article{Sparks1992ACI,
  title={A counterjet in the elliptical galaxy M87},
  author={William B. Sparks and Didier Fraix-Burnet and Ferdinando Duccio Macchetto and Frazer N. Owen},
  journal={Nature},
  year={1992},
  volume={355},
  pages={804-806}
}
JETS in radio galaxies have a variety of observed morphologies, in particular appearing in both one-sided and two-sided forms. It is not known whether jets can be intrinsically one-sided, or if the one-sided appearance is the result of an asymmetry in a two-sided jet. An asymmetry could be real, or apparent because of geometrical and possibly relativistic effects creating a large difference in the apparent visibility of the two sides. The elliptical galaxy M87 hosts a weak but well known one… 

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