Speaker
Description
X-ray flux and pulse period fluctuations of accretion-powered pulsars in the Small Magellanic Cloud and elsewhere convey important information about the disk-magnetosphere interaction. In this talk, we present a novel signal processing framework based on the canonical magnetocentrifugal accretion torque and a linear Kalman filter to generate time-dependent estimates of the state variables associated with magnetocentrifugal accretion, namely the mass accretion rate, the Maxwell stress at the disk-magnetosphere boundary, and the radiative efficiency of the accretion. The parameter estimation scheme maximizes the Kalman filter likelihood to infer the underlying static physical parameters, including the magnetic dipole moment
