To: Rosario Gonzalez Riestra <email@example.com>
From: Ehud Behar <firstname.lastname@example.org>
Subject: chromoshperic evaporation
Date: Fri, 27 Jun 2008 11:44:24 -0400
I am writing in response to the last XMM newsletter and the request
to call your
attention to significant science results coming from XMM.
The work I think is significant is by a student of mine and myself.
Using the RGS and EPIC, we measured the change in abundances in a
sample of 8 large coronal flares;
(together with 6 flares from Chandra) this is the best sample ever of
coronal flares observed at high
The most exciting result coming out of this paper is the evidence for
meaning the abundances in the flares always tend to those of the
(that can differ from that of the quiet corona in different ways).
This is a fundamental result contributing to our understanding of how
coronal flares work,
both in stars and on the Sun.
It complements the timing analysis and discovery of the Neupert
effect by XMM on one of these
flares reported by Gudel et al. 2002
I think - together - the two papers really highlight XMM's capability
to study stellar flares
at very high energy (EPIC) and measure abundances at high resolution
These flares are akin to the solar flares responsible for coronal
magnetic communication interference on earth, and the magnificent
aurora at our poles.
I can easily write up a short popular paragraph on these results i
there is interest.