Abstsact. Based on pinhole photometer observations in 4-6 wavelength regions 'gee have searched for a connection between the intensities of the umbra and the penumbra of sunspots. For the 1.67 pm wavelength region it is apparent that spots with dark umbrae also have dark penumbrae. In the other wave
✦ LIBER ✦
A comparison of the oscillations in sunspot umbrae, penumbrae, and the surrounding photosphere
✍ Scribed by H. Balthasar; G. Küveler; E. Wiehr
- Publisher
- Springer
- Year
- 1987
- Tongue
- English
- Weight
- 623 KB
- Volume
- 112
- Category
- Article
- ISSN
- 0038-0938
No coin nor oath required. For personal study only.
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