Spectroscopic measurements of EUV ejecta in a CME: a high-blueshift trailing thread
Abstract
The mass of erupting prominence material can be inferred from the obscuration of emission behind this mass of cool plasma thanks to the rapid cadence of SDO/AIA images in the short EUV wavelength range (Carlyle et al. 2013, these proceedings). In comparing this approach with spectral observations from Hinode/EIS, to monitor contributions from emission seen around the erupting prominence material, we have found an intriguing component of blue-shifted emission, trailing the erupting prominence, with Doppler shifts on the order of 350 km s-1 in bright lines of both He ii and Fe xii.
- Publication:
-
Nature of Prominences and their Role in Space Weather
- Pub Date:
- January 2014
- DOI:
- Bibcode:
- 2014IAUS..300..464W
- Keywords:
-
- Sun: coronal mass ejections (CMEs);
- Sun: activity;
- Sun: prominences;
- Sun: UV radiation