✦ LIBER ✦

Soft x-ray emitting regions in the solar corona

✍ Scribed by M. Landini; B. C. Monsignori Fossi

Publisher: Springer
Year: 1971
Tongue: English
Weight: 485 KB
Volume: 17
Category: Article
ISSN: 0038-0938
DOI: 10.1007/bf00150040

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✦ Synopsis

The soft X-ray emission of the solar corona is investigated by comparison of the signals of several broad band photometers carried on the Solrad 9 satellite, and sensitive to the region 0.5-20 A. Temperature from 1.5 • 106 to 25 • 106 K have been measured with 'emission measure' S N~2 dVranging between 10 ~~ cm 3 to 1047 cm -a.

By means of the observational data and assuming magnetic confinement and hydrostatic equilibrium, the model of an active region is investigated. For temperatures larger than 107 K the emission is due to flare activity and two sets of emission measure are observed which appear to be related to the evolution of flares.

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