Large Doppler Shifts in X-Ray Plasma: An Explosive Start to Coronal Mass Ejection
Open Access
- 10 March 2001
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 549 (2) , L249-L252
- https://doi.org/10.1086/319164
Abstract
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.Keywords
This publication has 15 references indexed in Scilit:
- Identification of Spectral Lines in the 500–1600 A Wavelength Range of Highly Ionized Ne, Na, Mg, Ar, K, Ca, Ti, Cr, Mn, Fe, Co, and Ni Emitted by Flares (Te≥ 3 x 106K) and Their Potential Use in Plasma DiagnosticsThe Astrophysical Journal, 2000
- Catalogue of the 1997 SOHO–EIT coronal transient waves and associated type II radio burst spectraAstronomy and Astrophysics Supplement Series, 2000
- Relation between Flare-associated X-Ray Ejections and Coronal Mass EjectionsThe Astrophysical Journal, 1999
- Bi-directional plasma jets produced by magnetic reconnection on the SunNature, 1997
- H alpha Surges and X-Ray Jets in AR 7260The Astrophysical Journal, 1996
- Statistical Study of Solar X-Ray Jets Observed with the Yohkoh Soft X-Ray TelescopePublications of the Astronomical Society of Japan, 1996
- EIT: Extreme-ultraviolet Imaging Telescope for the SOHO missionSolar Physics, 1995
- Solar Flares and Coronal Mass EjectionsAnnual Review of Astronomy and Astrophysics, 1992
- Polymerization of N‐vinylcarbazole by gaseous initiatorsJournal of Applied Polymer Science, 1992
- Recent Observations of Dynamical Phenomena Associated with Solar FlaresPublications of the Astronomical Society of the Pacific, 1960