✦ LIBER ✦

Characteristics of the displacement of the penumbral bright grains of sunspots

✍ Scribed by R. Muller

Publisher: Springer
Year: 1976
Tongue: English
Weight: 107 KB
Volume: 48
Category: Article
ISSN: 0038-0938
DOI: 10.1007/bf00153335

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✦ Synopsis

It is confirmed that the penumbral bright grains are moving towards the sunspots umbra. At the umbra-penumbra boundary their horizontal velocity is about 0.5 km s -1 and their displacement is inclined downwards with an angle of 5 ~ to 20 ~ .

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