|
| | | | |
| | | |
| Stat |
Members: 3665
Articles: 2'599'751
Articles rated: 2609
20 January 2025 |
|
| | | | |
|
Article overview
| |
|
|
Multi-wavelength signatures of magnetic reconnection of a flare associated coronal mass ejection | | Bhuwan Joshi
; P. K. Manoharan
; Astrid M. Veronig
; P. Pant
; | | Date: |
12 Jan 2007 | | Abstract: | The evolution of an X2.7 solar flare, that occurred in a complex $etagammadelta$ magnetic configuration region on 2003 November 3, is discussed utilizing a multi-wavelength data set. The H$alpha$ images taken from the solar tower telescope at ARIES, Nainital, reveal well-defined footpoint (FP) and loop-top (LT) sources. As the flare evolves, the LT source moves upward and the separation between the two FP sources increases which is consistent with reconnection models of solar flares. The co-alignment of H$alpha$ with hard X-ray (HXR) images obtained from RHESSI shows spatial correlation between H$alpha$ and HXR footpoints, while the rising LT source in HXR is always located above the LT source seen in H$alpha$. The EUV images of the flaring region at 195 {AA} taken from SOHO/EIT reveal intense emission from low-lying loops near the active region during the impulsive phase. On the other hand, two bright loops are seen well outside the active region which undergo large scale reorganization during the flare. In radio wavelengths, type III radio bursts are observed few minutes prior to the start of HXR emission at the LT indicating pre-flare coronal activity. Slow drifting type IV bursts, which are observed at lower coronal heights at two time intervals along the flare period, are likely to be associated with the reconnection processes at two different coronal heights. Further, the intense type II radio burst at time inbetween these type IV bursts, but at a relatively larger height indicates the onset of CME and its associated coronal shock wave. The results of this study support the `break-out’ scenario observed in multipole magnetic configuration of a flaring region. | | Source: | arXiv, astro-ph/0701368 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
|
| |
|
|
|
REGISTER