Si XII X-Ray Satellite Lines in Solar Flare Spectra

Details Si XII X-Ray Satellite Lines in Solar Flare Spectra Si XII X-Ray Satellite Lines in Solar Flare Spectra

Feb 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006apj...638.1154p&link_type=abstract

The Astrophysical Journal, Volume 638, Issue 2, pp. 1154-1161.

Astronomy and Astrophysics

Astronomy

15

Line: Identification, Sun: Flares, Sun: X-Rays, Gamma Rays

Scientific paper

The temperature dependence of the Si XII n=3 and 4 dielectronic satellite line features at 5.82 and 5.56 Å, respectively, near the Si XIII 1s2-1s3p and 1s2-1s4p lines (5.681 and 5.405 Å), is calculated using atomic data presented here. The resulting theoretical spectra are compared with solar flare spectra observed by the RESIK spectrometer on the CORONAS-F spacecraft. The satellites, like the more familiar n=2 satellites near the Si XIII 1s2-1s2p lines, are formed mostly by dielectronic recombination, but unlike the n=2 satellites, are unblended. The implications for similar satellite lines in flare Fe spectra are discussed.

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