论文标题
超新星残留cassiopeia shocks的跨性别磁流失动力动力湍流
Trans-Alfvenic Magnetohydrodynamic Turbulence in the Vicinity of Supernova Remnant Cassiopeia-A Shocks
论文作者
论文摘要
可以使用同步加速器强度的二阶相关函数访问超新星残留物（SNR）中磁场干扰的统计数据。在这里，我们使用最近开发的无偏见的方法，通过同步加速器强度的两点相关性测量超新星残留Cassiopeia-A中的磁能光谱。在范围尺度的十年中，发现超新星残留冲击附近的测得的磁能光谱是2/3的功率定律，显示出已发达的反式磁性磁性流动力湍流。我们的结果在全球范围内与已发达的磁性磁动力动力湍流中反式马赫数的理论预测一致，并且可以通过在SNR冲击附近的磁场扩增来解释。磁能光谱预测SNR cassiopeia-a在射频观察中具有额外的子震动以及向前和反向冲击，并在冲击附近，放大磁场的径向窗口〜0.115pc
Statistics of the magnetic field disturbances in the supernova remnants (SNRs) can be accessed using the second-order correlation function of the synchrotron intensities. Here we measure the magnetic energy spectra in supernova remnant Cassiopeia-A by two-point correlation of the synchrotron intensities, using a recently developed unbiased method. The measured magnetic energy spectra in the vicinity of supernova remnant shocks are found to be 2/3 power law over the decade of range scales, showing the developed trans-Alfvenic magnetohydrodynamic turbulence. Our results are globally consistent with the theoretical prediction of trans-Alfvenic Mach number in developed magneto-hydrodynamic turbulence and can be explained by the amplification of the magnetic field in the vicinity of SNR shocks. The magnetic energy spectra predict SNR Cassiopeia-A having an additional subshock in the radio frequency observation along with forward and reverse shocks, with a radial window of the amplified magnetic field of ~ 0.115pc near the shocks
