NASA/IPAC EXTRAGALACTIC DATABASE
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NED object is Cygnus A; Reference is 1974MNRAS.166..305H
Fig. 2. The contours of brightness temperature in Cygnus A at 5 GHz. For the
two main components the contour interval is 10(**)4 K and the outermost
contour represents a brightness temperature of 0 +/- 2500 K. The solid regions
in the Np and Sf component reach 31 and 41 contours respectively. The area
surrounding the central component is drawn with an interval of 2000 K. The
half-power beamwidth is indicated by the shaded ellipse.
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