Analysis of magnesium XI line profiles from solar active regions

Details Analysis of magnesium XI line profiles from solar active regions Analysis of magnesium XI line profiles from solar active regions

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...282..784b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 282, July 15, 1984, p. 784-792. Research sponsored by the U.S. Department o

Astronomy and Astrophysics

Astrophysics

1

Line Spectra, Solar Activity, Solar Corona, Solar Spectra, Solar X-Rays, Electron Transitions, Magnesium, Resonance Lines, Spectrum Analysis

Scientific paper

High-resolution solar spectra of the Mg XI 1s2 1S0-1s2p 1P1 resonance line at 9.169 Å and the associated nearby satellite lines are presented from two rocket-borne crystal spectrometer measurements. Comparisons with two independent sets of theoretical calculations for the 1s2nl-1s2pnl dielectronic satellite lines with 3 ≤ n ≤ 7 indicate electron temperatures of 4 - 4.5×106K. Measured line widths indicate either that the ion temperature exceeds the electron temperature by about 1×106K or that about 28 km s-1 of turbulence is present.

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