Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.201...79m&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 201, no. 1, p. 79-90.
Astronomy and Astrophysics
Astronomy
3
Radio Astronomy, Supernova Remnants, Very Large Array (Vla), Brightness Distribution, Decametric Waves, Particle Flux Density
Scientific paper
The supernova remnant Cassiopeia A was observed by two-decameter radio interferometers at 20 and 25 MHz, making it possible to determine the dependence of the visibility function modulus on the hour angle. The dependencies obtained were compared with calculations based on the brightness distribution measurements of this source, using the VLA at 1381 MHz. It is found that the discrepancies between the calculations and the experimental data increase with the decrease in the frequency. It is suggested that interstellar medium absorption may be responsible for changes in the Cas A brightness distribution at these frequencies.
Braude Ya. S.
Galanin V. V.
Inyutin G. A.
Khristenko A. D.
Litvinenko O. A.
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