3C 129 at 90cm: Evidence for a Radio Relic?

Details 3C 129 at 90cm: Evidence for a Radio Relic? 3C 129 at 90cm: Evidence for a Radio Relic?

2002-02-13

arxiv.org/abs/astro-ph/0202255v1

Astronomy and Astrophysics

Astrophysics

8 pages, 2 figures, accepted for publication in AJ

Scientific paper

10.1086/340359

We present a new wide-field map of the radio galaxy 3C 129 and its companion galaxy 3C 129.1 at lambda=90 cm. We see a distinct steep-spectrum feature near the head of 3C 129, extending in a direction perpendicular to the radio tails. We propose that this Crosspiece might consist of fossil radio plasma, which has been re-energized by the compression of the bow shock of the supersonically moving galaxy 3C 129. One possible origin of the fossil radio plasma could be the tail of a nearby head-tail radio galaxy. We discuss the implications of, and give testable predictions for this scenario.

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