Low-frequency observations of the supernova remnant HB 21

Details Low-frequency observations of the supernova remnant HB 21 Low-frequency observations of the supernova remnant HB 21

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989kfnt....5...44k&link_type=abstract

Kinematika i Fizika Nebesnykh Tel (ISSN 0233-7665), vol. 5, May-June 1989, p. 44-49. In Russian.

Physics

Brightness Distribution, Emission Spectra, Flux Density, Supernova Remnants, H Ii Regions, Low Frequencies

Scientific paper

Distributions of brightness temperature and flux density were obtained
for HB 21 at 14.7, 16.7, 20, and 25 MHz. The spectral index in the
30-7690 MHz range was 0.41 + or - 0.03. Near HB 21, three H II regions
were observed, which are visible in absorption and partially coincide
with the expanding shell of neutral hydrogen detected earlier.

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