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Radio and X-ray signatures of magnetic reconnection behind an ejected flux rope View all abstracts by submitter

Pascal Demoulin   Submitted: 2005-02-10 07:09

We present a detailed study of a complex solar event observed on June 02 2002. Joint imaging EUV, X-ray and multi-wavelength radio observations allow us to trace the development of the magnetic structure involved in this solar event up to a radial distance of the order of two solar radii . The event involves type II, III and IV bursts. The type~IV burst is formed by two sources: a fast moving one (M) and a ``quasi-stationary'' one (S). The time coincidence in the flux peaks of these radio sources and the underlying hard X-ray sources implies a causal link. In a first part we provide a summary of the observations without reference to any CME model. The experimental results impose strong constraints on the physical processes. In a second part, we find that a model with an erupting twisted flux rope, with the formation of a current sheet behind, best relates the different observations in a coherent physical evolution (even if there is no direct evidence of the twisted flux rope). Our results show that multi-wavelength radio imaging represent a powerful tool to trace the dynamical evolution of the reconnecting current sheet behind ejected flux-ropes (in between sources M and S) and over an altitude range not accessible by X-ray observations.

Authors: Pick, M., Démoulin, P., Krucker, S., Malandraki, O., Maia, D.
Projects: RHESSI,Soho-EIT

Publication Status: ApJ, in press (625, June 2 issue)
Last Modified: 2005-02-10 07:09
Go to main E-Print page  Turbulence in the Solar Atmosphere: Manifestations and Diagnostics via Solar Image Processing  OBSERVATIONAL EVIDENCE OF THE KINK INSTABILITY IN SOLAR FILAMENT ERUPTIONS AND SIGMOIDS  Edit Entry  Download Preprint  Submitter's Homepage Delete Entry 

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