𝔖 Bobbio Scriptorium
✦   LIBER   ✦

North-South asymmetry in sudden disappearances of solar prominences

✍ Scribed by G. Vizoso; J. L. Ballester

Publisher
Springer
Year
1987
Tongue
English
Weight
300 KB
Volume
112
Category
Article
ISSN
0038-0938

No coin nor oath required. For personal study only.

✦ Synopsis

This paper presents the results of a study of the N-S asymmetry in sudden disappearances (SD) of solar prominences during solar cycles 18-21, obtained as a part of a more extensive research on SD and reappearances during years 1931-1985(Ballester, 1984)). As can be seen, the N-S SD asymmetry curve is not in phase with the solar cycle and peaks about the time of solar minimum, the asymmetry reverses in sign during the solar maximum, being, this change of sign, coincident with the reversal of the Sun's magnetic dipole. The SD asymmetry curve can be fitted by a sinusoidal function with a period of eleven years. On the other hand, the SD asymmetry curve shows a strong coincidence with the N-S asymmetries presented by other solar activity manifestations as studied by different authors.

πŸ“œ SIMILAR VOLUMES

North-South asymmetry in the solar flare
North-South asymmetry in the solar flare index
✍ Tamer AtaΓ§; Atila Γ–zgΓΌΓ§ πŸ“‚ Article πŸ“… 1996 πŸ› Springer 🌐 English βš– 391 KB

This paper reports the results of a study of the N-S asymmetry in the flare index using the results of Knogka (1985) combined with our results for the solar cycles 17 to the current cycle 22. By comparing the time-variation of the asymmetry curve with the solar activity variation of the 11-year cycl

Long-term variations in north-south asym
Long-term variations in north-south asymmetry of solar activity
✍ Derek B. Swinson; Hisako Koyama; Takao Saito πŸ“‚ Article πŸ“… 1986 πŸ› Springer 🌐 English βš– 467 KB

We present a new set of data on relative sunspot number (total, northern hemisphere, and southern hemisphere), taken for the 37-yr period 1947 to 1983; this constitutes a particularly coherent and consistent set of data, taken by the same observer (Hisako Koyama) using the same observing instrument.