Coronal bright points at 6 and 20 centimeter wavelengths

Details Coronal bright points at 6 and 20 centimeter wavelengths Coronal bright points at 6 and 20 centimeter wavelengths

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...325..905k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 325, Feb. 15, 1988, p. 905-911.

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16

Centimeter Waves, Radio Waves, Solar Corona, Solar Radiation, Solar X-Rays, Very Large Array (Vla), Computational Astrophysics, H I Regions, Solar Magnetic Field

Scientific paper

The paper presents the results of near-simultaneous observations of bright points at 6 and 20 cm for a time interval of 10 hr using the VLA. It is shown that, at both 6 and 20 cm, the radio sources in the quiet sun have a very close association with bipolar features seen in magnetograms and with dark features in He I 10830 A spectroheliograms. The paper discusses the associations and the distributions of size, brightness, and temporal variation of the microwave bright points. It is found that the brightness temperatures of the 6 and 20 cm bright points are in the approximate ratio 0.09:1 expected from the emission mechanism being thermal bremsstrahlung.

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