On the propagation of brightening after filament/prominence eruptions, as seen by SoHO-EIT

Free access article

Issue		A&A Volume 453, Number 3, July III 2006


Page(s)		1111 - 1116
Section		The Sun
DOI		http://dx.doi.org/10.1051/0004-6361:20064993

A&A 453, 1111-1116 (2006)
DOI: 10.1051/0004-6361:20064993

On the propagation of brightening after filament/prominence eruptions, as seen by SoHO-EIT

D. Tripathi¹, H. Isobe^{1, 2} and H. E. Mason¹

¹ Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WA, UK
e-mail: [D.Tripathi;H.E.Mason]@damtp.cam.ac.uk
² Department of Earth and Planetary Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
e-mail: isobe@eps.s.u-tokyo.ac.jp

(Received 9 February 2006 / Accepted 27 March 2006)

Abstract
Aims.To study the relationship between the propagation of brightening and erupting filaments/prominences in order to get some insight into the three-dimensional picture of magnetic reconnection.
Methods.Analysis of the observations taken with the EIT (Extreme-ultraviolet Imaging Telescope) aboard SoHO (Solar and Heliospheric Observatory).
Results.When the prominences/filaments erupted having one point fixed - asymmetric eruption - the brightening propagated along the neutral line together with the expansion/separation from the polarity inversion line (PIL) as expected from the standard models. However in case of symmetric eruptions, the brightening propagated towards both end points starting at the middle. When the prominence/filament erupted faster then the speed of the propagating brightening was faster and vice-versa.
Conclusions.Based on these observations we conclude that the eruption and magnetic reconnection - propagation (along the PIL) and separation (away from PIL) of the brightening - are dynamically coupled phenomena. These observations can be explained by a simple extension of the 2D models illustrating eruption and magnetic reconnection to a 3D model.

Key words: Sun: corona -- Sun: coronal mass ejections (CMEs) -- Sun: prominences -- Sun: filaments -- Sun: flares

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.