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- W1917269968 abstract "We probe the relationship between surface magnetic fields and the X-ray emitting corona in the rapidly rotating star AB Dor. Circularly polarised spectra have been inverted to produce a surface (photospheric) magnetic field map. This surface map has been extrapolated to model AB Dor's coronal field topology and X-ray light curve. Chandra/LETG light curves of AB Dor from the same epoch show intrinsic variability at the 30% level. Period analysis indicates a fraction of this is due to rotational modulation. We measure velocity shifts in emission line centroids as a function of rotation period and find evidence of rotational modulation (max. vel. ~40+/- 13km/s). This modulation may indicate the presence of a localised X-ray emitting region at mid-to-high latitudes." @default.
- W1917269968 created "2016-06-24" @default.
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- W1917269968 date "2004-03-09" @default.
- W1917269968 modified "2023-10-18" @default.
- W1917269968 title "Using Chandra/LETG spectra to probe stellar coronae" @default.
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