= Rudy Wijnands
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{tag=Physicist}
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<Rudy Wijnands> and <Michiel van der Klis> reported persistent millisecond <X-ray> pulsations in an accreting <neutron star> system using a fast timing instrument.<Discovery of the first accretion-powered millisecond X-ray pulsar by Rudy Wijnands and Michiel van der Klis>[Abstract: coherent pulsations detected with the Rossi X-ray Timing Explorer]{ref}
A stable pulse train supplies evidence of rapid <rotation> that differs from a broad quasi-periodic feature. The observation connects accretion-powered systems with the spin-up interpretation of a <recycled pulsar>, while the origin of an individual timing feature still requires a physical model.
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