Extreme jet distortions in low-z radio galaxies

Research output: Contribution to journalArticle (Academic Journal)

Abstract

Jets often display bends and knots at which the flows change character. Extreme distortions have implications for the nature of jet flows and their interactions. We present the results of three radio mapping campaigns. The distortion of 3CRR radio galaxy NGC 7385 is caused by a collision with a foreground magnetised gas cloud which causes Faraday rotation and free-free absorption, and is triggered into star formation. For NGC 6109 the distortion is more extreme, creating a ring-shaped structure, but no deflector can be identified in cold or hot gas. Similar distortions in NGC 7016 are apparently associated with an X-ray gas cavity, and the adjacent NGC 7018 shows filaments drawn out beyond 100 kpc. Encounters with substructures in low-density, magnetised, intergalactic gas are likely causes of many of these features.

Original languageEnglish
Pages (from-to)61-65
Number of pages5
JournalProceedings of the International Astronomical Union
Volume14
Issue numberA30
DOIs
Publication statusPublished - 1 Jan 2018

Keywords

  • Galaxies:active
  • galaxies:jets
  • intergalactic medium
  • radio continuum:galaxies

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