The radio spectrum of coronal hole 1

Details The radio spectrum of coronal hole 1 The radio spectrum of coronal hole 1

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977stin...7830029w&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Radio Spectra, Solar Corona, Solar Radio Emission, Spectroheliographs, Spectrum Analysis, Data Reduction, Sun, X Ray Astronomy

Scientific paper

In an effort to determine the spectral characteristics of radio features associated with coronal holes, radioheliograms obtained at five different wavelengths during the period 25 June through 02 July 1973 were analyzed. X-ray pictures of the sun give the position of Coronal Hole 1 (CH1) on the solar disk during this period. Scans at the same solar latitude (40 N) of the maps were used to reduce the radio spectrum of CH1. These scans showed also a westward displacement of the radio hole relative to the X-ray hole which is a not-well-understood effect that requires further study. Radio data at wavelengths ranging from 2.8 cm to 3.75 m obtained by other observers on subsequent disk passages of CH1 seem to fit reasonably well into the radio spectrum of H1 deduced from the 28 June 1973 radio maps analyzed in this report.

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