MHD seismology as a tool to diagnose the coronae of X-ray active sun-like flaring stars

A. K. Srivastava1* † and Sairam Lalitha2
1Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital 263129, India
2Hamburger Sternwarte, University of Hamburg, Gojenbergsweg 112, 21029, Hamburg, Germany

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It is now well accepted that the detection of impulsively generated multiple MHD modes are potentially used in diagnosing the local plasma conditions of the solar corona. Analogously, such analyses can also be significantly used in diagnosing the coronae of X-ray active Sunlike stars. In the present paper, we briefly review the detection of MHD modes in coronae of some X-ray active Sun-like stars, e.g. Proxima Centauri, ξ-Boo etc using XMM-Newton observations, and discuss the implications in deriving physical information about their localized magnetic atmosphere. We conclude that the refinement in the MHD seismology of solar corona is also providing the best analogy to develop the stellar seismology of magnetically active and flaring Sun-like stars to deduce the local physical conditions of their coronae.

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Keywords : magnetohydrodyamics (MHD) – magnetic reconnection – flares – coronae