A broad line at meter wavelengths in the supernova remnant Cassiopeia A

Details A broad line at meter wavelengths in the supernova remnant Cassiopeia A A broad line at meter wavelengths in the supernova remnant Cassiopeia A

Oct 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pazh....7..612a&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 7, Oct. 1981, p. 612-616.) Soviet Astronomy Letters, vol. 7, Sept.-Oct. 1981, p. 339-34

Astronomy and Astrophysics

Astronomy

1

Cassiopeia A, Masers, Radio Spectra, Stellar Radiation, Supernova Remnants, Synchrotron Radiation, Earth Magnetosphere, Flux Density, Neutron Stars, Radio Sources (Astronomy)

Scientific paper

The radio spectrum of Cas A displays a feature 35 MHz wide at half-power level, peaking at 114 MHz. Its peak intensity is 18% above the level of the Cas A synchrotron spectrum. Beyond the line profile, at 81.5 and 152 MHz, 1980 measurements imply a secular flux decrease of (1.29 + or - 0.06)%/yr, (1.10 + or - 0.20)%/yr, respectively. The line may be evidence of maser emission in the magnetosphere of a neutron star embedded in the supernova remnant.

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