Modelling annual scintillation arc variations in PSR J1643-1224 using the Large European Array for Pulsars
G. Mall,
R. A. Main,
J. Antoniadis
et al.
Abstract:In this work we study variations in the parabolic scintillation arcs of the binary millisecond pulsar PSR J1643−1224 over five years using the Large European Array for Pulsars (LEAP). The 2D power spectrum of scintillation, called the secondary spectrum, often shows a parabolic distribution of power, where the arc curvature encodes the relative velocities and distances of the pulsar, ionised interstellar medium (IISM), and Earth. We observe a clear parabolic scintillation arc which varies in curvature througho… Show more
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