Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...326..988h&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 326, March 15, 1988, p. 988-996.
Astronomy and Astrophysics
Astronomy
21
Centimeter Waves, Magnetic Flux, Solar Corona, Solar Magnetic Field, Solar Radio Emission, Line Of Sight, Magnetic Field Configurations, Radio Astronomy, X Ray Sources
Scientific paper
The authors present the results of the first simultaneous observations of the quiet Sun made at the 20 cm radio wavelength and in the He I λ10830 line. Simultaneous magnetic field measurements were also obtained with lower time resolution during the five consecutive hours of observations. In the 512arcsec×512arcsec common observing field of view the authors find that the 20 cm radio emisison, which originates from the low corona-transition region, is always associated with regions of enhances He I absorption; yet, it does not always coincide with strong He I λ10830 absorption regions known as He I "dark points". The temporal changes of the 20 cm emission and the underlying He I absorption are also studied.
Habbal Shadia R.
Harvey Karen L.
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