Synchrotron emission from astrophysical nonthermal sources usually assumes that the emitting particles are isotropic. By means of large-scale two- and three-dimensional particle-in-cell simulations, we demonstrate that the dissipation of magnetically dominated ( ##IMG## [http://ej.iop.org/images/2041-8205/895/2/L40/apjlab93dcieqn1.gif] {${\sigma }_{0}\gg 1$} ) turbulence in pair plasmas leads to strongly anisotropic particle distributions. At Lorentz factors ##IMG## [http://ej.iop.org/images/2041-8205/895/2/L40/apjlab93dcieqn2.gif] {$\sim {\sigma }_{0}{\gamma }_{\mathrm{th}0}$} (here, ##IMG## [http://ej.iop.org/images/2041-8205/895/2/L40/apjlab93dcieqn3.gif] {${\gamma }_{\mathrm{th}0}$} is the initial Lorentz factor), the particle velocity is preferentially aligned with the local magnetic field; instead, the highest energy particles are preferentially oriented in the plane perpendicular to the field. This energy-dep...

中文翻译：

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电磁支配等离子体湍流的硬同步加速器光谱

来自天体非热源的同步加速器发射通常假定发射粒子是各向同性的。通过大规模的二维和三维粒子模拟，我们证明了磁性支配（## IMG ## [http://ej.iop.org/images/2041-8205/ 895/2 / L40 / apjlab93dcieqn1.gif] {$ {\ sigma} _ {0} \ gg 1 $}）对等离子体中的湍流会导致强烈的各向异性粒子分布。在洛伦兹系数下## IMG ## [http://ej.iop.org/images/2041-8205/895/2/L40/apjlab93dcieqn2.gif] {$ \ sim {\ sigma} _ {0} {\ gamma } _ {\ mathrm {th} 0} $}（在这里，## IMG ## [http://ej.iop.org/images/2041-8205/895/2/L40/apjlab93dcieqn3.gif] {$ { \ gamma} _ {\ mathrm {th} 0} $}是初始洛伦兹因子），粒子速度优先与局部磁场对齐；代替，能量最高的粒子优先定向在垂直于电场的平面上。这个能量依赖...