 Photos
Home
Programme
Participants
Abstracts
Working Groups
Flare Events
LOC
Sponsored by:
|
DIAGNOSTICS OF SOLAR CORONA PLASMA BY MEANS OF EUV SPECTROHELIOGRAPH RES-C ON CORONAS-F SPACECRAFT
A.Urnov, S.Kuzin, I.Zhitnik, S.Bozhenkov, O.Bugaenko, F.Goryaev, A.Pertzov, A.Ignat’ev, S.Oparin
abstract: More than 300 full-Sun images in monochromatic EUV lines have been obtained by the spectroheliograph RES-C for the current experiment SPIRIT on CORONAS-F mission since the launch on July 31, 2001. About 30 images contain flares at the different phases. The RES-C device includes two channels covering spectral bands 177 - 207 and 285 - 335 A. Non-overlapping images in the most prominent lines have been recorded in each channel due to about 20 times compression of the solar disc along the dispersion direction. Spatial resolution in the direction perpendicular to the dispersion plane is up to 5 arcsec. About 165 lines are recorded in the both spectral region and 102 lines of He, Ni, Fe, S, Ar, Ca, Cr, Si, and Mg ions with the temperature of formation in the range 0.05 - 20 MK are identified with the help of the CHIANTI database (version 4.2). Relative intensities of 15 prominent lines are used for density diagnostics of optically thin plasma of quiet-Sun areas, active regions and flares. The comparative differential emission measure (DEM) analysis for the flare and active region plasmas have been performed by means of two inversion techniques, the original one based on the Bayes algorithm and that provided by the CHIANTI package.
Download:
Important links:
RETURN
|
