Emission Measure Distribution and Abundances Measurements During High-T Flares

Details Emission Measure Distribution and Abundances Measurements During High-T Flares Emission Measure Distribution and Abundances Measurements During High-T Flares

2005-11-06

arxiv.org/abs/astro-ph/0511159v1

Astronomy and Astrophysics

Astrophysics

To appear in the proceedings of "The X-ray Universe" 2005 Conference. 6 Pages, 5 figures

Scientific paper

The RSCVn system Sigma Geminorum was observed by XMM-Newton on April 2001 during a large flare. We model the emission measure distribution (EMD) during the flare and during a quiescence period. In the flare, a two phase behaviour is found in which the cool plasma (kT < 2 keV) is not disturbed while a large hot component, at temperatues of kT > 3 keV emerges. Fundamental limitations on EMD modeling of high temperature plasmas are then discussed, in the context of the Sigma Gem flare.

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