Has the Crab a radio shell?

Details Has the Crab a radio shell? Has the Crab a radio shell?

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pazh...12..198t&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 12, Mar. 1986, p. 198-204) Soviet Astronomy Letters (ISSN 0360-0327), vol. 12, Mar.-Apr

Astronomy and Astrophysics

Astronomy

2

Astronomical Spectroscopy, Centimeter Waves, Crab Nebula, Radio Spectra, Brightness Distribution, Spectral Energy Distribution, Supernova Remnants, Surface Properties

Scientific paper

Comparison of 1.38 and 2.08-cm RATAN-600 observations against Velusamy's (1985) 20-cm VLA map indicates that the spectral index alpha holds constant along drift scans across the entire Crab Nebula source. Measurements of wide dynamic range with the high-sensitivity 7.6-cm RATAN-600 radiometer place a new upper limit on the surface brightness of any circumnebular shell of 10 to the -22nd W/sq m sr Hz on 14-60 arcmin scales, contravening the existence of a radio shell around the Crab.

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