Journal article

Magellanic Accretion-powered Pulsars Studied via an Unscented Kalman Filter

DM Christodoulou, J O’Leary, A Melatos, T Kimpson, S Bhattacharya, NJ O’Neill, SGT Laycock, D Kazanas

Astrophysical Journal | Published : 2025

Abstract

Magnetized high-mass X-ray binary pulsars accreting from a surrounding disk have been recently studied by a time-dependent Kalman filter (KF) model of accretion capable of studying correlations between dynamical variables and producing time series of their behaviors. We return to the intrinsic KF equations that describe the accretion process, and we rewrite them in simpler forms that allow for straightforward interpretations and a deeper understanding of the KF output data. We describe the influence of the KF defined frequencies β1, β2, and γΩ, and we investigate the surface dipolar magnetic fields of 24 Magellanic pulsars produced by the KF analysis in comparison to the values obtained from..

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Grants

Awarded by University of Massachusetts Lowell