Evidence for two maxima of activity in the 20th solar cycle
β Scribed by S. Cuperman; A. Sternlieb
- Publisher
- Springer
- Year
- 1972
- Tongue
- English
- Weight
- 235 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0038-0938
No coin nor oath required. For personal study only.
β¦ Synopsis
Analysis of the 5303 ~ coronal line intensity and of the sunspot activity during the period 1962-1970 confirms the existence of two distinct maxima of solar activity, in accordance with the previous findings of Gnevyshev for the period 1954-1960.
π SIMILAR VOLUMES
Predicted values of some main indices of solar activity for the 21st solar cycle are given. The epoch of maximum of solar activity has been placed in 1980.8 + 0.1. The predicted peak values of the relative sunspot numbers published by other authors are also given.
The present paper investigates the north-south asymmetry for major flares (solar cycles 19 and 20), type II radio bursts (solar cycles 19,20 and 21), white light flares (solar cycle 19,20 and 21), and gan~na ray bursts, hard X-ray bursts and coronal mass ejections (solar cycle 21). The results are
In this work, we compare the activity of unsupported and monoclinic zirconia e supported nickel ferrites, calcined at two different temperatures, for solar hydrogen production by two-step water-splitting thermochemical cycles at low thermal reduction temperature. Commercial nickel ferrite, both as-