Evolution of an Active Stellar Corona on Time Scales of Days

Details Evolution of an Active Stellar Corona on Time Scales of Days Evolution of an Active Stellar Corona on Time Scales of Days

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008xmm..prop...80b&link_type=abstract

XMM-Newton Proposal ID #06031701

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Stars, White Dwarfs, Solar System, Ei Eri

Scientific paper

The solar corona evolves on time scales of days to years reflecting local and global solar magnetic variations. The changes in coronal activity are observed through temperature and abundance variations over these time scales. Coronae of other stars are believed to be analogous to that of the sun, but can be orders of magnitude more active. Despite the assumed similarity, we are lacking a systematic study of the evolution of a stellar corona on the relevant time scale of days. We propose to carry out iso-phase snapshots of the active corona of EI Eri over six days in order to study for the first time the chemical and thermal evolution of active regions on a stellar corona over the time scales typical of evolving solar coronal loops.

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