Abstract
Results of observations of Cassippeia A at decametric wavelengths on radiointerferometers with baselines of 2840 and 3550 wavelengths are presented. As has been found, the model of the large-scale structure, deducted from the measurements in the meter and decimeter wavebands, is inconsistent with the results obtained at decameter wavelengths. The data can be reconciled by assuming a compact detail with angular dimensions about 4″. The contribution of that detail into the total flux is 6.8±2.4% and 3.7±1.4% at 20 and 25 MHz, respectively. The radiation spectrum of the part in the range 20 to 111 MHz is steep, with a spectral index about 2.
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Bovkoon, V.P., Braude, S.Y. & Megn, A.V. Observations of Cassiopeia A at 20 and 25 MHz with the uran-1 interferometer. Astrophys Space Sci 81, 221–230 (1982). https://doi.org/10.1007/BF00676147
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DOI: https://doi.org/10.1007/BF00676147