Spectral and polarization characteristics of the supernova remnant CTA1

Details Spectral and polarization characteristics of the supernova remnant CTA1 Spectral and polarization characteristics of the supernova remnant CTA1

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a...103..393s&link_type=abstract

Astronomy and Astrophysics, vol. 103, no. 2, Nov. 1981, p. 393-404.

Astronomy and Astrophysics

Astrophysics

25

Astronomical Spectroscopy, Polarization Characteristics, Supernova Remnants, Astronomical Maps, Continuous Spectra, Emission Spectra, Point Sources, Stellar Magnetic Fields, X Ray Sources

Scientific paper

The spectral characteristics of the continuum emission from the supernova remnant CTA 1 have been studied over the frequency range from 151.5 to 2695 MHz. A point-by-point analysis of the spectral index shows that there exist only small deviations from the mean value = 0.47 (S ∼ ν-α). Polarization measurements at 2695 and 1720 MHz indicate a magnetic field which is tangential to the shell at those places where shell structure is well defined. The physical parameters of the remnant including possible X-ray emission are discussed as are the characteristics of some point sources in the field.

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