Decameter fine structure in 4C 21.53

Details Decameter fine structure in 4C 21.53 Decameter fine structure in 4C 21.53

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984azh....61.1108b&link_type=abstract

(Astronomicheskii Zhurnal, vol. 61, Nov.-Dec. 1984, p. 1108-1112) Soviet Astronomy (ISSN 0038-5301), vol. 28, Nov.-Dec. 1984, p.

Astronomy and Astrophysics

Astronomy

2

Decametric Waves, Fine Structure, Pulsars, Radiant Flux Density, Radio Sources (Astronomy), Scintillation, Crab Nebula, Distance, Interplanetary Medium, Power Spectra, Radio Spectra, Size Determination

Scientific paper

Observations of the peculiar source 4C 21.53 obtained at 20 and 25 MHz using the Ukrainian UTR-2 radio telescope during April-May 1983 are reported. Interplanetary scintillations of flux density 250 + or - 50 and 160 + or - 25 Jy, respectively, are detected, and the half-intensity size of the scintillating component is estimated as 2.0 and 1.5 arcsec, respectively, assuming a Gaussian brightness distribution. Other parameters determined include pulsar distance about 2 kpc and 20-80-MHz spectral index 1.85 + or - 0.15, in agreement with observations of Crab and Cas A compact sources.

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