Physical and Dynamical Properties of a Post-CME Current Sheet
Abstract
On January 8, 2002 following a CME at the east limb, thin threads of materials are formed, as seen in the white light corona, with continuous outflow that lasted more than two days as it gradually moved toward the north. We interprete it as a current sheet left behind the CME. UV/EUV spectra were taken on January 10 by SOHO/UVCS and SOHO/CDS as part of the SOHO JOP 151. The UV spectra at 1.6 Ro show a small region (< 70 arcsec) of depleted low temperature emission and a high temperature region where lines from highly ionized ions such as Fe+17 and Ca+13 are observed. We combine the data from UVCS, LASCO, EIT and CDS on SOHO to derive the physical properties (electron temperature, electron density and elemental abundances) and dynamical properties (outflow speed and acceleration) of these regions which is likely to be associated with this current sheet. Implications on its formation and magnetic properties are discussed.
- Publication:
-
AGU Spring Meeting Abstracts
- Pub Date:
- May 2002
- Bibcode:
- 2002AGUSMSH21B..07K
- Keywords:
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- 7500 SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY;
- 7509 Corona;
- 7513 Coronal mass ejections;
- 7524 Magnetic fields;
- 7549 Ultraviolet emissions