Coronal activity cycles in solar analog stars

Details Coronal activity cycles in solar analog stars Coronal activity cycles in solar analog stars

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010xmm..prop...12f&link_type=abstract

XMM-Newton Proposal ID #06703203

Physics

Stars, White Dwarfs, Solar System, Hd 81809, 61 Cyg, Alpha Cen

Scientific paper

The present program to study for the first time solar-like cycles in the X-ray emission of stars similar to our Sun has been ongoing since XMM s AO-1. Five targets in three stellar systems have been monitored since 2001, providing for the first time clear evidence of long-term cycles in the X-ray luminosity of normal stars, with variations in X-ray luminosity of up to an order of magnitude. We request continuation of the ongoing monitoring program into XMM AO-10, needed to progress toward full characterization of the coronal cycle for our targets.

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