论文标题
通过未对准的磁场对缩放天体物理流出的实验室破坏
Laboratory disruption of scaled astrophysical outflows by a misaligned magnetic field
论文作者
论文摘要
在这里使用实验室实验研究了由于磁性压力而导致的天体物理流出构成明亮，致密和准直喷的喷射。我们显然研究了流出之间的射流直接对准的影响，因为它源于来源和磁场。对于微小的未对准，磁性喷嘴形成并重定向到准射流中的流出。对于日益严密的未对准，该喷嘴变得越来越不对称，破坏了喷射的形成。因此，我们的结果表明，流出/磁场错位是一个合理的关键过程，可调节从太阳的流出到外交喷气机的各种物体中的射流准则。此外，它们为观察到的天体物理喷气机的结构提供了一种可能的解释。射流调制可以解释为在流出/环境场角中随时间变化的签名，而射流方向的变化可能是环境场方向变化的标志。
The shaping of astrophysical outflows into bright, dense and collimated jets due to magnetic pressure is here investigated using laboratory experiments. We notably look at the impact on jet collimation of a misalignment between the outflow, as it stems from the source, and the magnetic field. For small misalignments, a magnetic nozzle forms and redirects the outflow in a collimated jet. For growing misalignments, this nozzle becomes increasingly asymmetric, disrupting jet formation. Our results thus suggest outflow/magnetic field misalignment to be a plausible key process regulating jet collimation in a variety of objects from our Sun's outflows to extragalatic jets. Furthermore, they provide a possible interpretation for the observed structuring of astrophysical jets. Jet modulation could be interpreted as the signature of changes over time in the outflow/ambient field angle, and the change in the direction of the jet could be the signature of changes in the direction of the ambient field.
