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A coronal hole observed at 10.7 GHz with a large single dish

✍ Scribed by E. Fürst; W. Hirth

Publisher: Springer
Year: 1975
Tongue: English
Weight: 214 KB
Volume: 42
Category: Article
ISSN: 0038-0938
DOI: 10.1007/bf00153292

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✦ Synopsis

On July 24, 1973, a coronal hole was observed at 10.69 GHz (2.8 cm) with the Bonn 100-m telescope. The difference of the brightness temperature between outside and inside the hole was about 400 to 500 K. It is shown that this lack of emission can be explained by usually adopted values of the electron density at the bottom of the corona.

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