Large Doppler Shifts in X-Ray Plasma: An Explosive Start to Coronal Mass Ejection

Details Large Doppler Shifts in X-Ray Plasma: An Explosive Start to Coronal Mass Ejection Large Doppler Shifts in X-Ray Plasma: An Explosive Start to Coronal Mass Ejection

Mar 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001apj...549l.249i&link_type=abstract

The Astrophysical Journal, Volume 549, Issue 2, pp. L249-L252.

Astronomy and Astrophysics

Astronomy

28

Sun: Flares, Sun: Uv Radiation, Sun: X-Rays, Gamma Rays

Scientific paper

We report observations, taken with the Solar Ultraviolet Measurements of Emitted Radiation spectrometer, of spatially resolved high red and blue Doppler shifts (up to 650 km s-1) from X-ray-emitting plasma in the corona above a flare. The high Doppler shifts are seen minutes after a fast, faint optical front is seen racing through the same part of the corona in images taken with the Mirror Coronagraph for Argentina. The association of the large-scale fast optical emission front with soft X-ray emission and high Doppler shifts suggests plasma heating and acceleration in the wake of a shock.

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