During the 2023 outburst of GK Persei, the spin-pulse amplitude grew and the accretion column faded as optical brightness rose, consistent with curtain absorption rather than a change in intrinsic X-ray emission.
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Evolution of the inner accretion flow and the white-dwarf spin pulse during the 2023 outburst in GK Persei
During the 2023 outburst of GK Persei, the spin-pulse amplitude grew and the accretion column faded as optical brightness rose, consistent with curtain absorption rather than a change in intrinsic X-ray emission.