银河发电机模拟
Galactic dynamo simulations
摘要：
最近对ISM内超新星驱动湍流的模拟支持了大规模发电机的存在。这个发电机的成长时间大约为2亿年，速度相当快，这与文献中的许多说法相矛盾。在这里，我们提出了详细的模拟内的发电机效应的缩放，并讨论了全球平均场模型的基础上采用的湍流系数。结果进行了比较，全球模拟的磁旋转不稳定性。
英文摘要：
Recent simulations of supernova-driven turbulence within the ISM support the existence of a large-scale dynamo. With a growth time of about two hundred million years, the dynamo is quite fast -- in contradiction to many assertions in the literature. We here present details on the scaling of the dynamo effect within the simulations and discuss global mean-field models based on the adopted turbulence coefficients. The results are compared to global simulations of the magneto-rotational instability.
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