Three Dimensional Structure and Time Development of Radio Emission from Solar Active Regions.
Abstract
The three dimensional structure of quiescent active regions is determined by simultaneous multiple wavelength observations. Synthesis maps obtained with the Very Large Array (V.L.A.) at 2 cm, 6 cm and 20 cm wavelength are compared with Solar Maximum Mission satellite observations at X-ray and E.U.V. (extreme ultraviolet) wavelengths, Westerbork Synthesis Radio Telescope observations at 6 cm wavelength, and H alpha and offband H alpha observations at the Big Bear, Ottawa River and Meudon Observatories. The 6 cm radiation of solar active regions is due to plague-associated bremsstrahlung and sunspot-associated gyroemission. The sunspot-associated component does not emit detectable X-ray radiation, whereas the plague-associated component does. Snapshot maps made at 10 second intervals during solar bursts provide evidence for preburst heating and for magnetic changes before and during solar bursts.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 15, 1983
- Accession Number
- ADA126640
Entities
People
- Kenneth R. Lang
Organizations
- Tufts University