Paper published by D. Kuridze, M. Mathioudakis, H. Morgan, R. Oliver, L. Kleint, T. V. Zaqarashvili, A. Reid, J. Koza, M. G. Löfdahl, T. Hillberg, V. Kukhianidze, A. Hanslmeier at, ,
Mapping the Magnetic Field of Flare Coronal Loops
Here, we report on the unique observation of flaring coronal loops at the solar limb using high-resolution imaging spectropolarimetry from the Swedish 1 m Solar Telescope. The vantage position, orientation, and nature of the chromospheric material that filled the flare loops allowed us to determine their magnetic field with unprecedented accuracy using the weak-field approximation method. Our analysis reveals coronal magnetic field strengths as high as 350 G at heights up to 25 Mm above the solar limb. These measurements are substantially higher than a number of previous estimates and may have considerable implications for our current understanding of the extended solar atmosphere.
Image. GOES X-ray light curve of the X8.2 class flare of 2017 September 10.
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