YOHKOH Bragg crystal spectrometer observations of the dynamics and temperature behavior of a soft X-ray flare

Details YOHKOH Bragg crystal spectrometer observations of the dynamics and temperature behavior of a soft X-ray flare YOHKOH Bragg crystal spectrometer observations of the dynamics and temperature behavior of a soft X-ray flare

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pasj...44l..95d&link_type=abstract

PASJ: Publications of the Astronomical Society of Japan (ISSN 0004-6264), vol. 44, no. 5, p. L95-L99.

Astronomy and Astrophysics

Astronomy

16

Bragg Angle, Magnetohydrodynamic Turbulence, Resonance Lines, Solar Flares, Solar Spectrometers, X Ray Spectra, Japanese Spacecraft, Solar Temperature

Scientific paper

We describe X-ray spectra of an M 1.5 flare that occurred on November 9, 1991 starting at about 0313 UT. This flare is unusual in that very intense blueshifted components are observed in the resonance lines of Fe XXV, Ca XIX, and S XV. During the onset of the flare, the resonance lines of Ca XIX and Fe XXV are primarily due to this blueshifted component, which from the Doppler effect indicates line-of-sight speeds and turbulent motions that in combination extend up to 800 km/s.

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