The longitudinal proper motion of sunspots and the solar rotation rate
β Scribed by Fred Ward
- Publisher
- Springer
- Year
- 1966
- Tongue
- English
- Weight
- 632 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0033-4533
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Using new measurements of positions of individual sunspots and sunspot groups obtained from 62 years of the Mt. Wilson white-light plate collection, we have recomputed the correlation between longitude and latitude motion. Our results for groups are similar to those of Ward (1965a) computed from the
The N-S drift of sunspot groups has been studied in a different way than previously, using positions of recurrent groups of the years 1874-1976. The existence of the meridional motions, the general shape of the drift curves, and the dissimilarity between these curves around sunspot maxima and minima
Results are presented for the solar rotation, 1978, as derived from sunspots by two different methods. Using recurrent spots only, the latitude dependence of the sidereal rotation rate was calculated to be ~: = (14.41 + 0.05)-(3.13 + 0.26) sin 2 q~. Using recognizable spots, both recurrent and non-r