The Parsec-Scale Nucleus and Jets of Hydra A

  • Gregory B. Taylor
Conference paper
Part of the International Astronomical Union book series (IAUS, volume 175)

Abstract

Sensitive, high-resolution VLBA observations of the nuclear region of Hydra A are presented at 1.3, 5 and 15 GHz. Hydra A (3C218) is an outstanding example of a high-luminosity FRI radio galaxy embedded within a cooling flow cluster. VLA observations by Taylor & Perley (1993) have demonstrated extremely high (>5000 radians m−2) Faraday rotation measures (RMs) and a striking RM and depolarization asymmetry between the northern and southern radio lobes. In view of this asymmetry on the kpc-scale Hydra A appears remarkably symmetric on the pc-scale in the radio continuum. Hydra A is also unusual in that the 21 cm atomic Hydrogen line is seen in absorption against the nucleus.

Keywords

Position Angle Faraday Rotation Radio Galaxy Radio Continuum Extragalactic Radio Source 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Dwarakanath, K.S., Owen, F.N., & van Gorkom, J.H. (1995) ApJL, 442, pp. L1-L4ADSCrossRefGoogle Scholar
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Copyright information

© International Astronomical Union 1996

Authors and Affiliations

  • Gregory B. Taylor
    • 1
  1. 1.NRAOSocorroUSA

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