Zodiacal light observed by HELIOS throughout solar cycle No 21: stable dust and varying plasma.
Abstract
The zodiacal light observations performed by the Helios space probes covered a period of more than 11 years, from December 1974 through February 1986. During this time no variation in zodiacal light brightness was detected, with limits of + or - 2 percent for secular variations. However, the density of solar wind at high heliographic latitudes showed a strong enhancement during the maximum of solar cycle.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- February 1989
- Bibcode:
- 1989A&A...210..399L
- Keywords:
-
- Interplanetary Dust;
- Solar Cycles;
- Solar Wind;
- Space Probes;
- Zodiacal Light;
- Helios 1;
- Secular Variations;
- Astronomy