Summing Flares From EV Lac
Abstract
We present preliminary results of a study of the spectral and temporal behavior of flares from the active M-dwarf EV Lac. We will apply three powerful techniques: high-resolution spectroscopic diagnostics to infer flaring loop conditions (temperature, density, dynamics); measurement of flare scale heights from Fe K fluorescence; and state-of-the-art hydrodynamic flare models. The high rate of short flares, the X-ray signature of high density, and the evidence for opacity in X-ray resonance lines make EV Lac an ideal target. A deep flare exposure obtained by summing short events will provide some of the best high-resolution time-resolved spectra possible for constraining physical models of M-dwarf coronae and flares with detail which can only be achieved through high resolution X-ray spectroscopy.
- Publication:
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Chandra's First Decade of Discovery
- Pub Date:
- September 2009
- Bibcode:
- 2009cfdd.confE.118H
- Keywords:
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- Stellar Spectroscopy