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September 24, 2025Open Access

Modeling the polarization properties of synchrotron sources through simulations of relativistic MHD turbulence

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Authors

LZL. Del ZannaNBN. BucciantiniSLSimone Landi

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Overview

3D relativistic MHD simulations reveal the polarization behavior of synchrotron emissions in PWNe, indicating varying turbulence conditions.

Key Points

  • The integrated degree of linear polarization spans the observed range in pulsar wind nebulae, and shows a variance based on turbulent fluctuations.
  • 3D simulations of relativistic MHD turbulence demonstrate magnetic fluctuations developing a Kolmogorov cascade with a slope of -5/3.
  • Statistical analysis of synthetic synchrotron maps reveals that they depend significantly on the relative amplitude of turbulent fluctuations.
  • Magnetic reconnection occurs mostly in thin current sheets, leading to observed deviations from isotropic Gaussian distributions in the plasma.

Cite This Study

Zanna et al. (2025) studied this question.

synapsesocial.com/papers/68d6e0fc8b2b6861e4c3f4fahttps://doi.org/10.48550/arxiv.2508.20620
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