Measurements of the flux density of Cas A and confirmation of an anomaly at 38 MHz.
Abstract
Summary. Measurements of the flux density of the young SNR Cas A relative to that of Cyg A are presented at frequencies of 38, 151 and 1420MHz, and compared with recent observations by Erickson & Perley. Their report of an unexpectedly high flux density at 38 MHz is confirmed, and the two higher frequency results provide further evidence consistent with the suggestion of Baars & Hartsuijker that the radio spectrum of Cas A is tending to flatten. Some possible explanations of the 38-MHz result are discussed.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- January 1977
- DOI:
- 10.1093/mnras/178.2.259
- Bibcode:
- 1977MNRAS.178..259R
- Keywords:
-
- Radiant Flux Density;
- Radiation Measurement;
- Radio Emission;
- Radio Sources (Astronomy);
- Supernova Remnants;
- Radio Astronomy;
- Radio Spectra;
- Radio Telescopes;
- Very High Frequencies;
- Astronomy