Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007a%26a...471..705j&link_type=abstract
Astronomy and Astrophysics, Volume 471, Issue 2, August IV 2007, pp.705-709
Astronomy and Astrophysics
Astrophysics
4
Sun: Flares, Sun: Magnetic Fields, Sun: X-Rays, Gamma Rays
Scientific paper
Aims:We study the correlation and asymmetry between solar flare hard X-ray footpoint time profiles that can be used to constrain the energy release and particle acceleration processes in solar flares. Methods: We perform a statistical analysis of correlations and asymmetries of hard X-ray footpoints for 29 solar flares that were observed by the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) in 2002-2005. Using the CLEAN method, we derive the hard X-ray images and then extract light curves for each footpoint. We decompose the hard X-ray light curves into slowly-varying components and fast-varying components using the Fourier method and check their correlations separately. Results: Our analysis indicates that the asymmetry between hard X-ray footpoints is a ubiquitous feature in solar flares. However, in most asymmetric cases, the correlations between the light curves of the two footpoints remain high. In particular, the correlation coefficients between the slowly-varying components are significantly higher than those between the fast-varying components. We discuss the causes and implications of the asymmetries and correlations between hard X-ray footpoints.
Ding Ming-De Ding
Jin Meng
No associations
LandOfFree
Correlation and asymmetry between solar flare hard X-ray footpoints: a statistical study 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 Correlation and asymmetry between solar flare hard X-ray footpoints: a statistical study, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Correlation and asymmetry between solar flare hard X-ray footpoints: a statistical study will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-957597