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  1. ui.adsabs.harvard.edu

    Obtaining numerical models of pulsar pair discharges is a challenging endeavor and one that was only addressed in simplified one-dimensional simulations.In this work, we present two-dimensional particle-in-cell simulations of pair discharges near pulsar polar caps, including the Quantum Electrodynamics effects responsible for gamma-ray and pair ...
    Author:Fabio Cruz, Alexander Yuran Chen, Anatoly Spitkovsky, Thomas Grismayer, Luis SilvaPublished:2019
    • Coherence of Multidimensional Pair Production Discharges in Polar Caps ...

      We report on the first self-consistent multidimensional particle-in-cell numerical simulations of nonhomogeneous pair discharges in polar caps of rotation-powered pulsars. By introducing strong inhomogeneities in the initial plasma distribution in our simulations, we analyze the degree of self-consistently emerging coherence of discharges across magnetic field lines. In 2D, we study discharge ...

  2. iopscience.iop.org

    Oct 18, 2024Self-consistent particle-in-cell (PIC) plasma simulations (A. N. Timokhin 2010; A. N. Timokhin & J. Arons 2013), which took into account particle acceleration, photon emission, and pair production, demonstrated that, regardless of the ability of particles to escape from the NS surface, pair discharges always operate in a cyclic fashion.
  3. Sep 23, 2024We report on the first self-consistent multidimensional particle-in-cell numerical simulations of non-homogeneous pair discharges in polar caps of rotation-powered pulsars. By introducing strong inhomogeneities in the initial plasma distribution in our simulations, we analyze the degree of self-consistently emerging coherence of discharges across magnetic field lines. In 2D, we study discharge ...
  4. info.fusion.ciemat.es

    Particle-in-cell simulations of pair discharges at pulsar polar caps F. Cruz 1,2, A. Y. Chen 2, A. Spitkovsky 2, T. Grismayer 1, L. O. Silva 1 1 GoLP/Instituto de Plasmas e Fus o Nuclear, Instituto Superior T cnico, Lisbon, Portugal 2 Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA
  5. ui.adsabs.harvard.edu

    We report on the first self-consistent multidimensional particle-in-cell numerical simulations of nonhomogeneous pair discharges in polar caps of rotation-powered pulsars. By introducing strong inhomogeneities in the initial plasma distribution in our simulations, we analyze the degree of self-consistently emerging coherence of discharges across magnetic field lines. In 2D, we study discharge ...
  6. discoegg.github.io

    Coherence of Multi-Dimensional Pair Production Discharges in Polar Caps of Pulsars Chernoglazov A., Philippov A., Timokhin A. 2024 ... arXiv:2409.15409 Accepted by ApJL. 2 (i) Pulsar magnetosphere and polar cap I. Introduction Pulsar ≈ Faraday Disk Rotating compact object in magnetic field Electric field distribution ... 2D & 3D simulations ...
  7. researchgate.net

    Oct 18, 2024We also present the results of the first 3D simulations of discharges in a polar cap with a distribution of the global magnetospheric current appropriate for a pulsar with 60° inclination angle.
  8. journals.aps.org

    Sep 15, 2023Recently, localPIC simulations of the neutronstar polar-cap pair cascade have been performed [69,77,78]. These simulations show that the discharge is an oscillatory process: e pairs accelerated in the gap produce gamma rays that convert to more e pairs, which proceed to screen the gap, shutting down pair production [79].Itwas
  9. physics.purdue.edu

    A New PIC Code Tailored for Pulsar Simulations Attempt to understand Pulsar magnetosphere from rst principles 2D axisymmetric Particle-in-cell code Handles various coordinate systems Includes pair creation physics Runs on GPUs A. Y. Chen (Columbia Physics) Pulsar PIC Simulation May 12 2 / 14
  10. pubs.aip.org

    We study this problem in the case of a background linear electric field, relevant in pulsar polar caps, and using an heuristic model of the pair production process. The analytical results are confirmed with particle-in-cell simulations performed with the OSIRIS code that include heuristic pair production.

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