Poster Open Access

Giant white-light flares on fully convective stars occur at high latitudes

Ekaterina Ilin; Katja Poppenhaeger; Sarah Jane Schmidt; Silva P. Järvinen; Elisabeth R. Newton; Julián D. Alvarado-Gómez; J. Sebastian Pineda; James R. A. Davenport; Mahmoudreza Oshagh; Ilya Ilyin


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    <subfield code="a">Giant white-light flares on fully convective stars occur at high latitudes</subfield>
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    <subfield code="a">&lt;p&gt;In a &lt;strong&gt;systematic analysis of fully convective stars observed with TESS&lt;/strong&gt;, we detected four stars that displayed giant &lt;strong&gt;flares that were modulated in brightness by the stars&amp;#39; rapid rotation&lt;/strong&gt;. The morphology of the modulation allowed us to directly &lt;strong&gt;localize these flares between &lt;/strong&gt;&lt;strong&gt;55&amp;deg;&lt;/strong&gt;&lt;strong&gt; and &lt;/strong&gt;&lt;strong&gt;81&amp;deg;&lt;/strong&gt;&lt;strong&gt; latitude on the stellar surface&lt;/strong&gt;,&amp;nbsp; far higher than typical solar flare latitudes.&amp;nbsp;&lt;/p&gt;

&lt;p&gt;These findings are &lt;strong&gt;a.&lt;/strong&gt; evidence that strong magnetic fields tend to emerge close to the stellar rotational poles for fully convective stars, and &lt;strong&gt;b.&lt;/strong&gt; suggest that the impact of flares on the habitability of exoplanets around small stars could be weaker than previously thought.&lt;/p&gt;</subfield>
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