Spinning Corona of FK Com

Details Spinning Corona of FK Com Spinning Corona of FK Com

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009hst..prop12376k&link_type=abstract

HST Proposal ID #12376. Cycle 18

Physics

Scientific paper

FK Com {GIII} is an ultra-fast rotator - a coalesced binary that has spun up - and provides unique insights into activity at the extremes of dynamo action. Two consecutive Chandra orbits of ACIS-S/HETG and 20 orbits of HST/COS observations will be combined with contemporaneous Doppler imaging maps and spectropolarimetric field measurements to build 3D coronal models. We will: locate dominant coronal and TR structures using Doppler shifts; measure emission scale heights via rotational broadening; derive densities, abundances, and EM in both quiescent and flaring plasma; constrain the dynamic processes by line profile modeling; and measure microflaring effects. Results of this LP will provide a detailed legacy view of the workings of coronae at their extreme edge.;

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