Hostname: page-component-cd9895bd7-p9bg8 Total loading time: 0 Render date: 2024-12-12T09:33:56.955Z Has data issue: false hasContentIssue false
  • English
  • Français

Electron Density Enhancement During an UV Explosive Event

Published online by Cambridge University Press:  13 May 2016

M. S. Madjarska ,
J. G. Doyle  and
L. Teriaca
M. S. Madjarska
Affiliation:
Armagh Observatory, Armagh BT61 9DG, N. Ireland
J. G. Doyle
Affiliation:
Armagh Observatory, Armagh BT61 9DG, N. Ireland
L. Teriaca
Affiliation:
Armagh Observatory, Armagh BT61 9DG, N. Ireland

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

High resolution temporal observations performed with the SUMER spectrometer on SoHO provide us the opportunity to investigate the electron density variations in the solar mid-transition region due to explosive event-like phenomena. The O IV 1401.16/1404.81 density sensitive line intensity ratio shows a clear increase during a strong explosive event, corresponding to an electron density enhancement of a factor of ~ 3 with respect to pre-event values. This is consistent with recent MHD simulations (2.5 D).

Type
Session IV: Structure and Dynamics of the Transiton Region and Corona
Information
Symposium - International Astronomical Union , Volume 203: Recent Insights into the Physics of the Sun and Heliosphere: Highlights from Soho and Other Space Missions , 2001 , pp. 407 - 409
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

Chae, J., Wang, H., Lee, C.Y., Goode, P.R., Schühle, U., 1998, ApJ 497, L109.CrossRefGoogle Scholar
Dere, K.P., Bartoe, J.-D.F., Brueckner, G.E., 1989, Solar Phys. 123, 41.CrossRefGoogle Scholar
Dere, K.P., 1994, Adv. Space Res. 14(4), 13.CrossRefGoogle Scholar
Innes, D.E., Brekke, P., Germerott, D., Wilhelm, K., 1997a, Solar Phys. 175, 341.CrossRefGoogle Scholar
Innes, D.E., Inhester, B., Axford, W.I., Wilhelm, K., 1997b, Nature 386, 811.CrossRefGoogle Scholar
Karpen, J.T., Antiochos, S.K., DeVore, C.R., Golub, L., 1998, ApJ 495, 491.CrossRefGoogle Scholar
Landi, E., Landini, M., Dere, K.P. et al., 1999, A&AS 135, 339.Google Scholar
Porter, J.G., Dere, K. P., 1991, ApJ 370, 775.CrossRefGoogle Scholar
Roussev, I., Galsgaard, K., Erdélyi, R., Doyle, J.G., 2000, A&A (submitted).Google Scholar
Wikstøl, Ø., Judge, P. G., Hansteen, V., 1998, ApJ 501, 895.CrossRefGoogle Scholar
Wilhelm, K., Innes, D.E., Curdt, W., Kliem, B., Brekke, P., 1998, ESA-SP 421, 103.Google Scholar