Decameter investigations of the supernova remnant HB 9

Details Decameter investigations of the supernova remnant HB 9 Decameter investigations of the supernova remnant HB 9

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988azh....65.1214k&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 65, Nov.-Dec. 1988, p. 1214-1224. In Russian.

Astronomy and Astrophysics

Astronomy

Brightness Temperature, Stellar Spectra, Supernova Remnants, Energy Spectra, Radio Telescopes, Relativistic Electron Beams

Scientific paper

The paper presents brightness temperatures of the supernova remnant HB 9 measured with the UTR-2 radio telescope at frequencies from 12.6 to 25 MHz. The spectral index of the source below 1 GHz is 0.43±0.05. Below 30 MHz, the spectrum shows a drop due to absorption in ionized hydrogen around or within the remnant. The optical depth of the hydrogen is 0.05±0.03 at 25 MHz and the electron density is 0.8 cm-3. The volume density of radiation in the shell is about 7.5×10-37erg/(cm3s Hz) at 25 MHz and the magnetic field strengths is roughly 2.5×10-5Oe. The total energy of relativistic particles and the magnetic field in the supernova remnant is about 1050erg.

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