Automatic detection of white-light flare kernels in SDO/HMI intensitygrams
arXiv:1706.00988 · doi:10.1016/j.newast.2017.06.003
Abstract
Solar flares with a broadband emission in the white-light range of the electromagnetic spectrum belong to most enigmatic phenomena on the Sun. The origin of the white-light emission is not entirely understood. We aim to systematically study the visible-light emission connected to solar flares in SDO/HMI observations. We developed a code for automatic detection of kernels of flares with HMI intensity brightenings and study properties of detected candidates. The code was tuned and tested and with a little effort, it could be applied to any suitable data set. By studying a few flare examples, we found indication that HMI intensity brightening might be an artefact of the simplified procedure used to compute HMI observables.
arXiv comment18 pages, 9 figures, accepted for publication in New Astronomy
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Cited by in corpus (5)
- First Detection of Solar Flare Emission in Middle-Ultraviolet Balmer Continuum
- Non-LTE Calculations of the Fe I 6173 Å Line in a Flaring Atmosphere
- Understanding the HMI pseudocontinuum in white-light solar flares
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