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Reconciling the Systemic Kicks of Observed Millisecond Pulsars, Spider Pulsars, and Low-mass X-Ray Binaries

  • Authors: Paul Disberg, Arash Bahramian, Ilya Mandel

Paul Disberg et al 2026 The Astrophysical Journal Letters 1000 .

  • Provider: AAS Journals

Caption: Figure 2.

Distances of the kicked objects in the simulation of P. Disberg et al. (2025) for 40 Myr  <  t  < 1 Gyr (evaluated with time steps of 1 Myr). The left panel shows, for each simulation containing 103 objects with a kick magnitude vkick, the distribution of distances to the Sun (r) in a 2D histogram with distance bins of 0.5 kpc and velocity bins of 10 km s−1. The rows are normalized so that the distribution corresponds to P(rvkick). The dotted line shows the median kick velocity in each distance bin. The right panel shows kick distributions integrated over certain distance ranges (colors) through Equation (1) for a uniform kick distribution between 0 and 1000 km s−1, along with that uniform distribution itself (dotted line), which is the kick distribution observed at t = 0 for any distance. We note that (1) the simulation considers kick velocities up to 1000 km s−1, even though the figure shows kicks up to 600 km s−1, and (2) vkick equals the natal kick for single objects but the systemic kick for binaries.

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