✦ LIBER ✦

Five minute microwave solar oscillations

✍ Scribed by F. M. Strauss; P. Kaufmann; R. Opher

Publisher: Springer
Year: 1980
Tongue: English
Weight: 264 KB
Volume: 67
Category: Article
ISSN: 0038-0938
DOI: 10.1007/bf00146684

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✦ Synopsis

Oscillations with a period of 5.6 min were observed on 10 July, 1978 while tracking at 22 GHz the active region McMath 15403. The oscillations were strong, clearly defined, had no damping, and lasted for about two hours. The rarity of the phenomenon is indicated by the fact that it occurred only once in more than 250 hr of solar observations. The possibility that these oscillations are due to a standing Alfv6n wave driven by the photospheric velocity field is discussed.

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