A Multifrequency Study of CTB:80 with the Westerbork Synthesis Radio Telescope

Details A Multifrequency Study of CTB:80 with the Westerbork Synthesis Radio Telescope A Multifrequency Study of CTB:80 with the Westerbork Synthesis Radio Telescope

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....94..313a&link_type=abstract

Astronomy and Astrophysics, Vol. 94, P. 313, 1981

Astronomy and Astrophysics

Astrophysics

74

Scientific paper

We report observations of the galactic supernova remnant CTB 80 (W56, G69.0 +2.7) with the Westerbork Synthesis Radio Telescope (WSRT) at 6, 2t, and 49 cm wavelengths. Maps of the brightness distribution and linear polarization are presented for each wavelength, along with discussion of the distributions of spectral index, magnetic field direction and rotation measure over the central source and radio ridges.
The new data suggest that the bright central source and the extended underlying emission are physically associated. The spectrum over the central source is flat (α ˜ 0.0), steepening uniformly away from the core in all directions. Linear polarization is detected at all three observed wavelengths. The morphology, high degree of polarization and flat spectral index of the core suggest that `the central source may belong to the Crab Nebula type SNR class.
Inspection of the PSS plates reveals the presence of considerable optical nebulosity at the position of the radio continuum peak, adding CTB 80 to the list of ˜30 optically visible supernova remnants.

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