On the physics of a long decay X-ray event

Details On the physics of a long decay X-ray event On the physics of a long decay X-ray event

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980soph...66..371k&link_type=abstract

Solar Physics, vol. 66, June 1980, p. 371-391.

Physics

1

Coronal Loops, Decay Rates, Radiative Lifetime, Solar Limb, Solar Physics, Solar X-Rays, Conductive Heat Transfer, Hydrodynamics, Pressure Gradients, Radiant Flux Density, Skylab Program, Solar Magnetic Field, Spectroheliographs, Temperature Dependence, Temperature Gradients, X Ray Telescopes

Scientific paper

The paper discusses the long decay X-ray event which appeared as an expanding loop system on the solar limb on 13-14 Aug. 1973 which was also observed temporally and spectrally. A one-dimensional hydrodynamic study was undertaken to investigate increasing and decreasing phases of the event; it was shown that the inferred temperature gradients along the loops during the heating phase are consistent with unrestricted dynamic and conductive flows along the magnetic field lines. It was concluded that it cannot be definitely stated that enhanced emission at the tops of the loops is due to pressure gradients along the field lines; also, the large emission measure variations in the 10 to the 5th to 10 to the 6th K plasma during the event's decline may be due to the temperature dependence of radiative decay within a multiloop configuration.

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