Coronal Dynamics of the Flare Star EV Lac

Details Coronal Dynamics of the Flare Star EV Lac Coronal Dynamics of the Flare Star EV Lac

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cxo..prop..557o&link_type=abstract

Chandra Proposal ID #02200535

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Chandra Proposal Id #02200535

Scientific paper

We request a 100 ks ACIS-S+HETG observation of the dMe flare star EV Lac. EV Lac is an excellent candidate for dispersed spectroscopic studies with Chandra due to its brightness and propensity for frequent and extreme variability. EV Lac is the second brightest M dwarf X-ray source (the other, AU Mic, has already been observed). HETG observations allow study of coronal dynamics for the first time. The key physical parameters: abundances, temperatures, and densities, which have been constrained poorly up until now, can be determined accurately, leading to improved models and understanding of coronal structure and variability. Coordinated observations with HST and radio and optical observatories would extend our investigation into the dynamics of the entire atmosphere of EV Lac.

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