Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.243...87w&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 243, March 1, 1990, p. 87-96.
Astronomy and Astrophysics
Astronomy
7
Cassiopeia A, Supernova Remnants, Fourier Transformation, Radiant Flux Density, Stellar Magnitude, Very Large Array (Vla)
Scientific paper
Long-baseline interferometric observations of the supernova remnant Cassiopeia A on projected baselines of up to 34,000 lambda reveal that its structure at 81.5 MHz is remarkably similar to that observed with the VLA at 1381 MHz. Variations in spectral index over the source are apparent, but the measurements show that it does not contain a single steep-spectrum compact component with a flux density of more than a few Jy. These new findings are in sharp contrast with much of the existing low-frequency data on the remnant.
Duffett-Smith P. J.
Woan Graham
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