Reid, H.A.S. , Vilmer, N., Aulanier, G. and Pariat, E. (2012) X-ray and ultraviolet investigation into the magnetic connectivity of a solar flare. Astronomy and Astrophysics, 547, A52. (doi: 10.1051/0004-6361/201219562)
Full text not currently available from Enlighten.
Abstract
We investigate the X-ray and UV emission detected by RHESSI and TRACE in the context of a solar flare on the 16th November 2002 with the goal of better understanding the evolution of the flare. We analysed the characteristics of the X-ray emission in the 12–25 and 25–50 keV energy range while we looked at the UV emission at 1600 Å . The flare appears to have two distinct phases of emission separated by a 25-s time delay, with the first phase being energetically more important. We found good temporal and spatial agreement between the 25–50 keV X-rays and the most intense areas of the 1600 Å UV emission. We also observed an extended 100-arcsec < 25 keV source that appears coronal in nature and connects two separated UV ribbons later in the flare. Using the observational properties in X-ray and UV wavelengths, we propose two explanations for the flare evolution in relation to the spine/fan magnetic field topology and the accelerated electrons. We find that a combination of quasi separatrix layer reconnection and null-point reconnection is required to account for the observed properties of the X-ray and UV emission.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Reid, Dr Hamish |
| Authors: | Reid, H.A.S., Vilmer, N., Aulanier, G., and Pariat, E. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Astronomy and Astrophysics |
| Publisher: | EDP Sciences |
| ISSN: | 0004-6361 |
| ISSN (Online): | 1432-0746 |
University Staff: Request a correction | Enlighten Editors: Update this record
Altmetric
Altmetric