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- Title
Spectrum Anomaly of the Supernova Remnant 3C58.
- Authors
Ivanov, V. P.; Ipatov, A. V.; Rakhimov, I. A.; Andreeva, T. S.
- Abstract
We measured the instantaneous spectra of the supernova remnant 3C58 for the epochs: 2003.4, 2004.4, and 2013.2 with the RTF-32 radio telescope of the "Svetloe" IAA RAS observatory at four frequencies from 1550 to 8450 MHz. The spectra of 3C58 for the time intervals: 1963–1971, 1981–1998, and 2004–2010 were obtained from the published data allowing us to compare the intensity of 3C58 and standard sources. To reduce all the data to a unified system and build the spectra, we used the "artificial moon" flux scale. Comparison of the spectra according to the data obtained in 1963–2013 revealed non-stationary frequency-dependent variations of flux densities, as well as local deviations of the 3C58 spectra from the frequency power law. Possible causes of the detected anomalies are discussed.
- Subjects
SUPERNOVA remnants; SUPERNOVAE spectra; FREQUENCY spectra; RADIO telescopes; ACTINIC flux
- Publication
Astrophysical Bulletin, 2019, Vol 74, Issue 2, p128
- ISSN
1990-3413
- Publication type
Article
- DOI
10.1134/S1990341319020020