Focusing of relativistic cooling jets

Omer Bromberg*, Amir Levinson

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


The confinement of a relativistic cooling jet by the pressure and inertia of a surrounding matter is considered. It is demonstrated that, under certain conditions, even modest radiative losses behind the reconfinement shock can lead to a substantial focusing of the jet. The applications to blazars and M87 are discussed. Emphasize is given to the possibility that these recollimation nozzles may be the sources of the highly variable radiation observed in those objects.

Original languageEnglish
Pages (from-to)479-482
Number of pages4
JournalAIP Conference Proceedings
StatePublished - 2009
Event4th International Meeting on High Energy Gamma-Ray Astronomy - Heidelberg, Germany
Duration: 7 Jul 200811 Jul 2008


  • Active
  • Galaxies
  • Individual
  • Jets
  • M87
  • Non-thermal
  • Radiation mechanism
  • Shock waves


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