Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cfdd.confe...5t&link_type=abstract
Chandra's First Decade of Discovery, Proceedings of the conference held 22-25 September, 2009 in Boston, MA. Edited by Scott Wo
Astronomy and Astrophysics
Astrophysics
High Resolution Stellar Spectroscopy
Scientific paper
A decade of X-ray stellar observations with Chandra and XMM-Newton has led to significant advances in our understanding of the physical processes at work in hot (magnetized) plasmas in stars and their immediate environment, providing new perspectives and challenges, and in turn the need for improved models. The wealth of high-quality stellar spectra has allowed us to investigate, in detail, the characteristics of the X-ray emission across the HR diagram. Progress has been made in addressing issues ranging from classical stellar activity in stars with solar-like dynamos (such as, flares, activity cycles, spatial and thermal structuring of the X-ray emitting plasma, evolution of X-ray activity with age,...), to X-ray generating processes (e.g. accretion, jets, magnetically confined winds,..) that were poorly understood in the pre-Chandra/XMM-Newton era. I will discuss the progress made in the study of high energy stellar physics and its impact in a wider astrophysics context, focusing on the role of spectral diagnostics now accessible.
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