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A comparison of the temperature and emission measure of X-ray active regions with coronal magnetic fields

โœ Scribed by J. B. Burl; R. G. Teske; E. B. Mayfield

Publisher
Springer
Year
1979
Tongue
English
Weight
446 KB
Volume
63
Category
Article
ISSN
0038-0938

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โœฆ Synopsis

The distribution of temperature and of emission measure in X-ray active regions relative to the coronal magnetic fields has been investigated. The position of maximum temperature and the position of maximum emission measure were found to lie along the magnetic neutral line, with the maximum temperature tending to lie above the position of an abrupt change in direction of the neutral line. Several simple structural models of these regions are compared to the emission measure. The total magnetic energy and the total emission measure appear to be related by a power law in the regions studied by us.

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Comparison of the 9.1cm and soft X-ray e
Comparison of the 9.1cm and soft X-ray emission from an active region
โœ M. Gerassimenko; J. T. Nolte; R. D. Petrasso ๐Ÿ“‚ Article ๐Ÿ“… 1976 ๐Ÿ› Springer ๐ŸŒ English โš– 393 KB

Thermal bremsstrahlung from the X-ray observed plasma accounts for most of the observed 9.1 cm emission from McMath 12336, an old, spotless active region, on June 2, 1973. This implies that only a small fraction of the emission measure within the active region is in the range around 106 K and below.