Interactions of flares, accretion and wind in young stars

Details Interactions of flares, accretion and wind in young stars Interactions of flares, accretion and wind in young stars

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010xmm..prop...79m&link_type=abstract

XMM-Newton Proposal ID #06719601

Physics

Stars, White Dwarfs, Solar System, Su+Ab Aur

Scientific paper

Young stars can produce X-rays by different mechanisms: Coronal activity, accretion shocks and shocks in outflows. We propose to observe two targets within one field-of-view (FOV): SU Aur is accreting mass from a disk and shows violent coronal activity. We will study the time evolution of stellar flares on time scales from seconds to minutes using the high count rate in the EPIC and the OM to discover interactions with the accretion streams: The signature of the flare onset will differ in X-rays and UV between flares on coronal loops and flares on those field lines, which carry the accretion stream from the disk. AB Aur is more massive, it shows a tentative modulation in the X-ray luminosity apparently without spectral changes and contrary to model expectations.

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