Polarized synchrotron emission is a fundamental process in high-energy astrophysics, particularly in the environments around black holes and pulsars. Accurate modeling of this emission requires precise computation of the emission, absorption, rotation, and conversion coefficients, which are critical for radiative transfer simulations. Traditionally, these coefficients are derived using fit functions based on precomputed ground truth values. However, these fit functions often lack accuracy, particularly in specific plasma conditions not well represented in the datasets used to generate them. In this work, we introduce ${\tt MLody}$, a deep neural network designed to compute polarized synchrotron coefficients with high accuracy across a wide range of plasma parameters. We demonstrate ${\tt MLody}$'s capabilities by integrating it with a radiative transfer code to generate synthetic polarized synchrotron images for an accreting black hole simulation. Our results reveal significant differences, up to a factor of two, in both linear and circular polarization compared to traditional methods. These differences could have important implications for parameter estimation in Event Horizon Telescope observations, suggesting that ${\tt MLody}$ could enhance the accuracy of future astrophysical analyses.
A comparison between Galactic magnetic field models and polarized synchrotron emission with C-BASS at 4.76 GHz and S-PASS at 2.3 GHz
The University of Manchester（曼彻斯特大学）；FIZ Karlsruhe – Leibniz-Institute for Information Infrastructure（卡尔斯鲁厄FIZ–莱布尼茨信息基础设施研究所）；Instituto de Astrofísica de Canarias（加那利群岛天体物理研究所）；University of Oxford（牛津大学）
通过比较当代银河磁场模型与S-PASS和C-BASS巡天的偏振同步辐射观测，评估模型在重现偏振幅度和偏振角方面的能力，发现大多数模型在大尺度偏振角上表现良好，但无法再现偏振强度的形态，并指出局部结构（如北银极 Spur/Loop I 和 Fan 区域）对微波偏振同步辐射建模至关重要。
Polarized and unpolarized synchrotron emission from dark matter in extragalactic targets
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli（意大利国家核物理研究所，那不勒斯分部）；Department of Physics, University of Alberta（阿尔伯塔大学物理系）；Department of Physics and Santa Cruz Institute for Particle Physics (SCIPP), University of California, Santa Cruz（加州大学圣克鲁兹分校物理系及圣克鲁兹粒子物理研究所）
Self-consistent modeling of energy-dependent synchrotron polarization in blazars with application to Mrk 421
Centre for Space Research, North-West University（北威特大学空间研究中心）；Instituto de Física, Universidade Federal de Goiás（戈亚斯联邦大学物理研究所）；Université Paris Cité, CNRS, Astroparticule et Cosmologie（巴黎西岱大学，法国国家科学研究中心，亚原子粒子与宇宙学）；Ruhr Astroparticle and Plasma Physics Center (RAPP Center)（鲁尔天体粒子与等离子体物理中心（RAPP中心））；Ruhr University Bochum, Faculty of Physics and Astronomy, Astronomical Institute (AIRUB)（波鸿鲁尔大学，物理与天文学院，天文研究所（AIRUB））
Time-resolved spectro-polarimetric analysis of extremely bright GRB 230307A: Possible Evidence of evolution from photospheric to synchrotron dominated emission
Bhabha Atomic Research Center（巴哈原子研究中心）；Homi Bhabha National Institute（霍米·巴巴国立研究所）；Astrophysics Science Division, NASA Goddard Space Flight Center（NASA戈达德太空飞行中心天体物理学科学部）；Kavli Institute of Particle Astrophysics and Cosmology, Stanford University（斯坦福大学卡弗里粒子天体物理学与宇宙学研究所）；Ioffe Institute（约费物理技术研究所）；Physical Research Laboratory Thaltej（萨巴尔马蒂河左岸物理研究实验室）；Department of Physics, Ashoka University（阿肖卡大学物理系）；Indian Institute of Technology Bombay（孟买印度理工学院）；Department of Physics, University of Cagliari（卡利亚里大学物理系）
GRB 230307A的光谱偏振分析揭示了从光球主导到同步辐射主导的转变，可能表明磁场在喷流动力学中的演变作用。
