论文标题
螺旋力代理到边缘星系
Application of a helicity proxy to edge-on galaxies
论文作者
论文摘要
我们通过观察到边缘的Galaxy NGC 891的尘埃极化来检测星系中磁性螺旋的前景。我们对平均场电场发电机计算计算的数值结果表明，我们预计我们预计在第一个和第三次刺激的旋转式偏极中应该有一个旋转不变的偏极的大规模成分。大规模奇偶校验 - 预计在轴线附近是负数，而郊区则是正面的。这些特性大多是磁场是方位角的结果，而极化强度在银河系中心最大，而不是磁性螺旋性的标志。
We study the prospects of detecting magnetic helicity in galaxies by observing the dust polarization of the edge-on galaxy NGC 891. Our numerical results of mean-field dynamo calculations show that there should be a large-scale component of the rotationally invariant parity-odd B polarization that we predict to be negative in the first and third quadrants, and positive in the second and fourth quadrants. The large-scale parity-even E polarization is predicted to be negative near the axis and positive further away in the outskirts. These properties are shown to be mostly a consequence of the magnetic field being azimuthal and the polarized intensity being maximum at the center of the galaxy and are not a signature of magnetic helicity.
