ar X iv : a st ro - p h / 05 11 15 9 v 1 6 N ov 2 00 5 1 EMISSION MEASURE DISTRIBUTION AND ABUNDANCES MEASUREMENTS DURING HIGH - T FLARES
نویسندگان
چکیده
The RSCVn system σ 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 σ Gemi-norum flare.
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