Solar eclipse observations of a magnetic loop structure at 2, 3.2, 8.2 and 21 cm

Details Solar eclipse observations of a magnetic loop structure at 2, 3.2, 8.2 and 21 cm Solar eclipse observations of a magnetic loop structure at 2, 3.2, 8.2 and 21 cm

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982cha%26a...6..261l&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 6, Issue 3, p. 261-266.

Astronomy and Astrophysics

Astrophysics

Scientific paper

During the total eclipse of 1980 February 16, eclipse slope curves at 2, 3.2, 8.2 and 21 cm were obtained as the Moon occulted an active region with a bipolar sunspot group. From the peaks in these curves and the heights of the effective emission layers, the cores of the radio sources at the four wavelengths are located. Connecting these sites gives a magnetic loop structure. Relations between the locations, sizes, fluxes of the radio sources and the intensities, extensions, sizes and shapes of the bipolar sunspot field are analysed. The result at 8.2 cm is similar to the loop structure observed with the VLA at 6 cm. The radio flux spectrum shows that the gyro-radiation dominates over the thermal bremsstrahlung in this active region.

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