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Turbulent dynamo in diverse astrophysical environments

  申报标题:Turbulent dynamo in diverse astrophysical environments

  申报人:徐思遥

  申报人简介:美国威斯康辛大年夜学麦迪逊分校博士后,重要从事磁流体湍流及其在天体物理中的应用偏向的研究,如磁场缩小年夜、宇宙射线输运、恒星构成等。曾获2019年由国际实际物理和应用物理结合会(IUPAP)天体粒子物理委员会(C4)颁发的青年迷信家奖,2019年Cecilia Payne-Gaposchkin天体物理博士论文奖,2017年国际地理学结合会优良博士论文奖,和2017年哈勃博士后基金。

  申报摘要:As a fundamental problem of magnetohydrodynamic physics, turbulent dynamo accounts for the growth and maintenance of the cosmic magnetism in most astrophysical settings. However, for decades studies of turbulent dynamo were limited to its linear kinematic regime, which in most cases is of little astrophysical relevance. The Xu & Lazarian (2016, XL16) theory brings the application of turbulent dynamo to astrophysically significant regimes, which include the dynamo regime at a low ionization degree and the nonlinear dynamo regime. XL16 predicted a new regime for turbulent dynamo at a low ionization degree. By carrying out the first supercomputer 3D two-fluid dynamo simulation, we for the first time numerically confirmed this prediction. The XL16 theory has a general applicability to studying the magnetism in diverse astrophysical environments, such as the magnetic field amplification for the first star formation and in supernova remnants.

  申报时间:2019年11月11日(星期一)下午2:30

  申报地点:仙林园区3-302会议室

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