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Radio studies of large scale structures of the sun's corona and transient activity
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kundu, Mukul R. |
| Copyright Year | 1987 |
| Description | The use of meter-decimeter wavelength imaging observations for four different kinds of studies of solar coronal activity is discussed. (1) Large scale structure of the upper corona; daily imaging observations permit comparison of radio images with white light images from space and ground observation, generation of synoptic charts similar to white light coronagraph synoptic charts, and comparison of radio brightness enhancements and deficiencies with bright coronal streamers and coronal holes. (2) Relative positions of type III burst sources and coronal streamers as observed by Solwind experiment on the P-78-1 satellite and by the HAO C/P experiment aboard the SMM; infer the paths of type III emitting electrons in dense coronal streamers, and from multifrequency observations derive electron density distributions above active regions near the limb. (3) Non-flare associated type II/type IV bursts associated with coronal streamer disruption events; such type IV sources have a rather slow velocity (approx = to or less than 100 km/s) CMEs. (4) Meter-decimeter microbursts; these are short duration (2-10 sec) weak-type III-like bursts, produced at the fundamental plasma frequency by plasma radiation processes which have important differences from the standard mechanisms used to explain the strong type III bursts. |
| File Size | 57244 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19880001346 |
| Archival Resource Key | ark:/13960/t4wh7g28b |
| Language | English |
| Publisher Date | 1987-09-14 |
| Access Restriction | Open |
| Subject Keyword | Solar Physics Intervals Interplanetary Medium Solar Corona Solar Flares White Light Holography Solar Limb Electron Density Concentration Coronal Holes Surges Solar Activity Plasma Radiation Coronagraphs Decimeter Waves Synoptic Measurement Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
