摘要
We here report a probable detection of a stellar coronal mass ejection(CME)in active M dwarf KIC 8093473 by performing an analysis on its time resolved X-ray spectra observed by the XMM-Newton satellite.Compared to the value at the quiescent state and the interstellar one,our spectral modeling returns a marginal(and probably evolving)excess of hydrogen column density in the flare state at a significance level of 1σ,which can be understood by an additional absorption due to a flare-associate CME.The CME mass is then estimated to be∼7×10^(18)–2×10^(20)g according to the ice cream cone model.
基金
support from the National Key Research and Development Project of China (grant 2020YFE0202100)
supported by the National Natural Science Foundation of China (NSFC, grant No. 12173009)
by the Strategic Pioneer Program on Space Science, Chinese Academy of Sciences, grants XDA15052600 and XDA15016500
supported by the Natural Science Foundation of Guangxi (2020GXNSFDA238018)
by the Bagui Young Scholars Program.
