X-ray emission from seventeen X-ray flares was analyzed to obtain electron temperatures and emission measures associated with the source region in the solar corona. The source region was assumed to be isothermal with a Maxwellian electron velocity distribution. Flares which were characterized by a
X-ray temperature-emission measure modeling of the solar corona
โ Scribed by G. G. Cohen; D. W. Keith
- Publisher
- Springer
- Year
- 1979
- Tongue
- English
- Weight
- 383 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0038-0938
No coin nor oath required. For personal study only.
โฆ Synopsis
Several problems related to the calculation of an emission measure differential in temperature are resolved using a new calculation technique. The analysis of a flare on 20 April, 1976, is used to evaluate the usefulness of this new approach and to estimate its future value.
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An improved X-ray polarimeter is briefly described and preliminary results of the measurements carried out on the satellite 'Intercosmos-7' are presented. One flare with considerable polarization (P~> 16%) was observed on 1972 August 4. Two other flares with rather low polarization (P ~ 4 %; P/> 2 %
Broadband sensors aboard the Naval Research Laboratory's SOLRAD 11 satellites measured solar emission in the 0.5 to 3 ~, 1 to 8/~, 8 to 20 ~, 100 to 500/~, 500 to 800 ~, and 700 to 1030 bands between March 1976 and October 1979. Measurements of EUV and soft X-ray emission from a large number of sola