Preliminary magnetic-field measurements near pericenter of the Venera 9 orbit
Abstract
The paper presents measurements of the relative magnetic field changes obtained with the three-component ferroprobe magnetometers (measuring range positive to negative 60 gamma) aboard the Venera-9 spacecraft near the orbit pericenter, which was located on the night side at an altitude of about 1500 km. Typical magnetograms show three principal regions: (1) a region of calm field variations with a range of about 5 gamma, (2) a region of pronounced fluctuations in all components, the fluctuation maximum attaining 25 gamma with a width at the 0.7 level amounting to about 600 km, and (3) a region where the fluctuations die down, disappearing first in two components, and finally in the third. The measurements are in agreement with a previously determined upper limit for the magnetic moment of Venus (1/4000 that of the earth).
- Publication:
-
Soviet Astronomy Letters
- Pub Date:
- February 1976
- Bibcode:
- 1976SvAL....2...34D
- Keywords:
-
- Planetary Magnetic Fields;
- Planetary Orbits;
- Satellite-Borne Instruments;
- Venera Satellites;
- Atmospheric Models;
- Magnetic Moments;
- Magnetometers;
- Solar Wind;
- Lunar and Planetary Exploration