Mapping the magnetic field of flare coronal loops. (arXiv:1902.07514v1 [astro-ph.SR])
<a href="http://arxiv.org/find/astro-ph/1/au:+Kuridze_D/0/1/0/all/0/1">D. Kuridze</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Mathioudakis_M/0/1/0/all/0/1">M. Mathioudakis</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Morgan_H/0/1/0/all/0/1">H. Morgan</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Oliver_R/0/1/0/all/0/1">R. Oliver</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kleint_L/0/1/0/all/0/1">L. Kleint</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zaqarashvili_T/0/1/0/all/0/1">T. V. Zaqarashvili</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Reid_A/0/1/0/all/0/1">A. Reid</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Koza_J/0/1/0/all/0/1">J. Koza</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Lofdahl_M/0/1/0/all/0/1">M. G. Löfdahl</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hillberg_T/0/1/0/all/0/1">T. Hillberg</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kukhianidze_V/0/1/0/all/0/1">V. Kukhianidze</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hanslmeier_A/0/1/0/all/0/1">A. Hanslmeier</a>
Here we report on the unique observation of flaring coronal loops at the
solar limb using high resolution imaging spectropolarimetry from the Swedish
1-meter 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 Gauss 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.
Here we report on the unique observation of flaring coronal loops at the
solar limb using high resolution imaging spectropolarimetry from the Swedish
1-meter 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 Gauss 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.
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