Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spd....37.1314c&link_type=abstract
American Astronomical Society, SPD meeting #37, #13.14; Bulletin of the American Astronomical Society, Vol. 38, p.243
Astronomy and Astrophysics
Astronomy
Scientific paper
We perform a benchmark analysis between the recent version 5.2 of the CHIANTI atomic database and high-resolution solar flare X-ray spectra obtained with the RESIK instrument in the wavelength range 3.4-6.1 Angstrom. The physical properties of emitting plasmas during a C-class solar flare on 2003 February 22 are determined through two independent plasma diagnostic techniques: an emission measure analysis applied to strong, unblended atomic lines and a new method analyzing continuum contributions. From these parameters, synthetic spectra are derived using the CHIANTI database and software. The predicted spectra are then benchmarked against observed RESIK lines and continuum. Comparisons between CHIANTI and the MEKAL spectral code are also presented. In order to evaluate the level of confidence in RESIK's calibration, RESIK continuum levels are checked against simultaneous RHESSI observations as well as GOES continua obtained from parameters derived from GOES channel ratios.
Chifor Cristina
Del Zanna Giulio
Phillips Kenneth J. H.
Sylwester Barbara
Sylwester Janusz
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