SOLAR WIND AND THE SHOCK WAVE PROPAGATING FROM FLARES THROUGH INTERPLANETARY SPACE,
Abstract
The spiral structure of the interplanetary magnetic field, resulting from continuous radial expansion of the solar corona in interplanetary space, is confirmed by the results of an investigation of temporal regularities in absorption phenomena in the polar cap due to high-energy particles from proton flares. On the basis of a sufficiently large number of cases it was found that the propagation velocity of the agent, responsible for the sudden commencement (SC) of magnetic storms, through interplanetary space is higher by a factor of 2-4 than that of the solar wind. It is concluded that the SC of magnetic storms is due to the passage of the earth through a collisionless shock front. In one case the width of the front computed for a collisionless shock wave at small Mach numbers coincided with that of the front measured directly in interplanetary space. The structure of the interplanetary magnetic field, deformed by the propagating shock wave from the sun is discussed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 27, 1968
- Accession Number
- AD0681615
Entities
People
- A. S. Dvoryashin
Organizations
- National Air and Space Intelligence Center