✦ LIBER ✦

An investigation of the structure of coronal active regions

✍ Scribed by J. H. Parkinson

Publisher: Springer
Year: 1973
Tongue: English
Weight: 333 KB
Volume: 28
Category: Article
ISSN: 0038-0938
DOI: 10.1007/bf00152319

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✦ Synopsis

The temperature and density structure of a 'typical' coronal active region is deduced from X-ray observations of several active regions. Observations of the limb transits of three regions from OSO-5 indicate that the X-ray emission originates between 2 x 104 km and 1.5 • 105 km. An emission measure-temperature distribution is deduced from high resolution X-ray spectra obtained with a rocket observation of two similar regions. These observations are combined to give a model of a 'typical' active region, the temperature varying from 2 to 6 • 106 K with corresponding densities between 2 • 109 and 101~ cms -8.

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