Journal of Astrophysics and Astronomy

, Volume 8, Issue 3, pp 211–217 | Cite as

Dark spots, bubbles, and shells in the lobes of extragalactic radio sources

  • Wolfgang Kundt
  • Lakshmi Saripalli


Based on maps of the extragalactic radio sources Cyg A, Her A, Cen A, 3C 277.3 and others, arguments are given that the twin-jets from the respective active galactic nucleus ram their channels repeatedly through thin, massive shells. The jets are thereby temporarily choked and blow radio bubbles. Warm shell matter in the cocoon shows up radio-dark through electron-scattering.

Key words

jets—lobes—shells around galaxies—Cyg A—Her A—Radio bubbles 


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Copyright information

© Indian Academy of Sciences 1987

Authors and Affiliations

  • Wolfgang Kundt
    • 1
  • Lakshmi Saripalli
    • 2
    • 3
  1. 1.Institut für Astrophysik der UniversitÄtBonn 1FRG
  2. 2.Joint Astronomy Programme, Department of PhysicsIndian Institute of ScienceBangalore
  3. 3.Radio Astronomy CentreTata Institute of Fundamental ResearchBangalore

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