Coronal modulation in the ultra-fast rotator LO Peg
arxiv(2024)
摘要
We present coronal imaging of the ultra-fast rotator, LO Peg, using the X-ray
observations from XMM-Newton. The X-ray light curves show one strong flare at
the end of observation, as reported in an earlier study. On removal of flaring
events, the quiescent state light curve shows rotational modulations, which are
modelled using a maximum likelihood model. The results obtained from modelling
show the corona of LO Peg is not uniform. Active regions are concentrated
around two longitudes, where one active region appears to be compact. The large
coronal area that covers almost 60 degrees along longitude from the poles to
the equator does not consist of active regions.
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