Cosmic-Ray Flow in Space and its Relation to the Structure of Interplanetary Plasma
Abstract
The diurnal anisotropy phase of cosmic rays is analyzed on a day to day basis for extended periods. Emphasis is on the structure of interplanetary space as determined by the solar wind flow and IMF parameters to determine the frequency of the anomalous flow of cosmic rays and to what parameters in interplanetary space it is related. All time intervals of the declining phase of high velocity solar wind streams of recurrent type are examined, and 55 intervals with 4 or more days for which cosmic ray and space data are available are obtained. Results indicate that the mean density gradient between the heliographic equator and the region plus or minus 7 deg away from the equator sometimes reach an order of 5 percent per AU near the solar minimum at the orbit of the earth.
- Publication:
-
International Cosmic Ray Conference
- Pub Date:
- 1981
- Bibcode:
- 1981ICRC....4..155M
- Keywords:
-
- Anisotropic Media;
- Cosmic Rays;
- Interplanetary Medium;
- Magnetohydrodynamic Flow;
- Solar Wind;
- Diurnal Variations;
- Interplanetary Magnetic Fields;
- Space Plasmas;
- Space Radiation;
- ANISOTROPIC MEDIA;
- COSMIC RAYS;
- INTERPLANETARY MEDIUM;
- MAGNETOHYDRODYNAMIC FLOW;
- SOLAR WIND;
- DIURNAL VARIATIONS;
- INTERPLANETARY MAGNETIC FIELDS;
- SPACE PLASMAS