Determination of differential emission measure from X-ray solar spectra registered by RESIK aboard CORONAS-F

Details Determination of differential emission measure from X-ray solar spectra registered by RESIK aboard CORONAS-F Determination of differential emission measure from X-ray solar spectra registered by RESIK aboard CORONAS-F

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sosyr..40..294k&link_type=abstract

Solar System Research, Volume 40, Issue 4, pp.294-301

Physics

3

96.60.Ub

Scientific paper

The differential emission measure (DEM) describes the temperature distribution of the emitting plasma. The DEM distribution allows one to study the physical conditions and the energy of flares in detail (including the mean temperature and the total emission measure). In this paper, we analyze the time changes of the DEM distributions for a selected flare, which has been observed with the RESIK instrument. To calculate the differential emission measure, we used the Withbroe-Sylwester (W-S) iterative algorithm corresponding to the maximum likelihood procedure. The required emission functions were calculated with the CHIANTI package. We calculated the DEM for four available estimates of the ionization equilibrium and coronal composition of plasma.

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