Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2010-10-15
A&A, 2010, Volume 517, id.A41
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
10 pages, 9 figures
Scientific paper
10.1051/0004-6361/200913697
Flares are dynamic events which involve rapid changes in coronal magnetic topology end energy release. Even if they may be localized phenomena, the magnetic disturbance at their origin may propagate and be effective in a larger part of the active region. We investigate the temporal evolution of a flaring active region with respect to the loops morphology, the temperature, and emission measure distributions. We consider $Hinode/XRT$ data of a the 2006 November 12th C1.1 flare. We inspect the evolution of the morphology of the flaring region also with the aid of TRACE data. XRT filter ratios are used to derive temperature and emission measure maps and evolution. The analyzed flare includes several brightenings. We identify a coherent sequence of tangled and relaxed loop structures before, during, and after the brightenings. Although the thermal information is incomplete because of pixel saturation at the flare peak, thermal maps show fine, evolving spatial structuring. Temperature and emission measure variations show up in great detail, and we are able to detect a secondary heating of larger loops close to the proper flaring region. Finally we estimate the amount of energy released in these flaring loops during the flare decay.
Parenti Susanna
Reale Fabio
Reeves Katharine K.
No associations
LandOfFree
Post-flare evolution of AR 10923 with Hinode/XRT does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Post-flare evolution of AR 10923 with Hinode/XRT, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Post-flare evolution of AR 10923 with Hinode/XRT will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-203809