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Spectroscopic measurements of EUV ejecta in a CME: a high-blueshift trailing thread

Published online by Cambridge University Press:  06 January 2014

David Williams ,
Deborah Baker ,
Lidia van Driel-Gesztelyi  and
Lucie Green
David Williams
Affiliation:
UCL Mullard Space Science Laboratory, UK email: d.r.williams@ucl.ac.uk
Deborah Baker
Affiliation:
UCL Mullard Space Science Laboratory, UK email: d.r.williams@ucl.ac.uk
Lidia van Driel-Gesztelyi
Affiliation:
UCL Mullard Space Science Laboratory, UK email: d.r.williams@ucl.ac.uk Observatoire de Paris, LESIA, UMR 8109 (CNRS), France Konkoly Observatory, Budapest, Hungary
Lucie Green
Affiliation:
Observatoire de Paris, LESIA, UMR 8109 (CNRS), France
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Abstract

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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.

Keywords

Sun: coronal mass ejections (CMEs)Sun: activitySun: prominencesSun: UV radiation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S300: Nature of Prominences and their role in Space Weather , June 2013 , pp. 464 - 465
Copyright
Copyright © International Astronomical Union 2013 

References

Brown, C. M., Feldman, U., Seely, J. F., Korendyke, C. M., & Hara, H., 2008, ApJS 176, 511CrossRefGoogle Scholar
Carlyle, J., Williams, D. R., van Driel-Gesztelyi, L., & Innes, D. E., 2013, Proceedings IAU Symposium No. 300Google Scholar
Labrosse, N., Schmieder, B., Heinzel, P., & Watanabe, T., 2011, A&A 531, 69Google Scholar