Abstract
High dynamic range maps of Cygnus A at 2.7 and 5 GHz have been used to investigate the variation of spectral index over the extended parts of the source. Although both components show a steepening of spectral index away from the hotspots there is a marked asymmetry between the two components. This is interpreted as being due to a higher value of magnetic field in the Sf component.
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Scott, P.F. (1982). The Spectral Index Distribution of Cygnus A. In: Heeschen, D.S., Wade, C.M. (eds) Extragalactic Radio Sources. International Astronomical Union / Union Astronomique Internationale, vol 97. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-7781-5_6
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DOI: https://doi.org/10.1007/978-94-009-7781-5_6
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