✦ LIBER ✦

The coronal structure of active regions

✍ Scribed by M. Landini; B. C. Monsignori Fossi; A. Krieger; G. S. Vaiana

Publisher: Springer
Year: 1975
Tongue: English
Weight: 913 KB
Volume: 44
Category: Article
ISSN: 0038-0938
DOI: 10.1007/bf00156847

No coin nor oath required. For personal study only.

✦ Synopsis

A four-parameter model which assumes a Gaussian dependence of both temperature and pressure on distance from center is used to fit the compact part of coronal active regions as observed in X-ray photographs from a rocket experiment. The four parameters are the maximum temperature TM, the maximum pressure P~u=2NMkTM, the width of the pressure distribution ap, and the width of the temperature distribution aT=al/2ae. The maximum temperature TM ranges from 2.2 to 2.8 • 106K, and the maximum density NM from 2 to 9 x 109 cm -3. The range of ae is from 2 to 4 • 109 cm and that of ~x from 2 to 7.

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