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  1. meetings.aps.org

    Abstract: JO7.00010: Triggering QED processes by reconnection in near critical magnetic fields. 3:48 PM-4:00 PM ... We show that even when the magnetic fields initially do not exhibit QED effects, the reconnection leads to both energetic particles, and locally enhanced magnetic fields, such that radiative cooling and pair-production processes ...
  2. www-thphys.physics.ox.ac.uk

    Magnetic reconnection is a fundamental plasma process involving a rapid change of magnetic topology and often leading to a violent release of magnetic energy. Most of the reconnection research has so far been driven to under-stand magnetic dissipation in space, solar, and laboratory plasmas. These environments are rather tenuous and hence
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  4. II. MAGNETIC FIELD PATTERNS NEAR CRITICAL POINTS The magnetic eld line reconnection in high conductivity plasmas occurs on the site of critical points of the eld. Locally, in the vicinity of any arbitrary point, which we assume to be at the coordinates origin x = 0, we can expand the magnetic eld as B i(x;t) = B i(0;t) + @ jB i(x;t)x j+ @ jkB i ...
    Author:S. V. BulanovPublished:2016
  5. Strong magnetic fields in magnetospheres of neutron stars (especially magnetars) and other astrophysical objects may release their energy in violent, intense episodes of magnetic reconnection. While reconnection has been studied extensively, the extreme field strength near neutron stars introduces new effects: synchrotron cooling and electron-positron pair production. Using massively parallel ...
    Author:K. M. Schoeffler, T. Grismayer, D. Uzdensky, D. Uzdensky, R. A. Fonseca, R. A. Fonseca, L. O. SilvaPublished:2018
  6. iopscience.iop.org

    (3) The QED regime of radiative relativistic reconnection with pair creation occurs in strong magnetic fields approaching the quantum (Schwinger) field, e.g., this field is so strong that the mean free path of the produced gamma-ray photons with respect to QED one-photon pair production becomes short and large numbers of pairs can be produced.
    Author:K. M. Schoeffler, T. Grismayer, D. Uzdensky, D. Uzdensky, R. A. Fonseca, R. A. Fonseca, L. O. SilvaPublished:2019
  7. iopscience.iop.org

    Magnetic reconnection, originally addressed within the framework of the dissipative magneto-hydrodynamics (MHD), corresponds to the merging of oppositely directed magnetic fields which leads to field reconfiguration, plasma heating, jetting, and acceleration, is one of the most complicated and important processes in laboratory and space plasmas. It
  8. link.aps.org

    Entering the strong-field QED regime where not only ξ&1 but also χ&1 (here, we limit to processes primed by an electron), is a challenging task nowadays as the amplitude of the criticaleld of QED largely exceeds available field strengths (the criticaleld amplitude corresponds to a laser intensity of the order of 1029 W/cm2). Thus,
  9. link.aps.org

    We examine wave propagation and the formation of shocks in strongly magnetized plasmas by applying a variational technique and the method of characteristics to the coupled magnetohydrodynamic (MHD) and quantum-electrodynamic (QED) equations of motion. In sufficiently strong magnetic fields such as those found near neutron stars, not only is the plasma extremely relativistic but the effects of ...
  10. ui.adsabs.harvard.edu

    Magnetic reconnection in relativistic pair plasma with QED radiation and pair-creation effects in the presence of strong magnetic fields is investigated using 2D particle-in-cell simulations. The simulations are performed with the QED module of the OSIRIS framework that includes photon emission by electrons and positrons and single photon decay into pairs (non-linear Breit-Wheeler).
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