论文标题
星际前星云：关于二进制磁场和磁场如何产生喷气机的原理，进度和问题的背景
Pre-planetary nebulae: a context for principles, progress, and questions on how binaries and magnetic fields produce jets
论文作者
论文摘要
天体物理流出最初被视为球形对称性，通常会显示出曾经在更高分辨率下看到的不对称性的证据。在从哈勃太空望远镜的许多观察结果之后，很明显，明显的非球行星星云（PN）和星空前星云（PPN）的占优势是显而易见的。长期以来，人们认为二进制相互作用对于塑造不对称的PN/PPN至关重要，但是如何呢？ PPN对两者的运动要求更高，并且要特别关注。我解决了观察和理论的进步如何提出两种广泛的吸积驱动的PPN喷气机：一个用于更宽的二进制文件（PPN-W），其中伴侣在巨型的外部半径之外，通过Roche Lobe溢出，另一个是在近后阶段发生的，是在近来的bineplies（cee）（CEE）的后期（cee）（cee）（cee）。在这些情况下的物理学将磁场在发动机和天体物理喷气机中的作用和起源的进展和开放问题联系起来。
Astrophysical outflows treated initially as spherically symmetric often show evidence for asymmetry once seen at higher resolution. The preponderance of aspherical and multipolar planetary nebulae (PN) and pre-planetary nebulae (PPN) was evident after many observations from the Hubble Space Telescope. Binary interactions have long been thought to be essential for shaping asymmetric PN/PPN, but how? PPN are the more kinematically demanding of the two, and warrant particular focus. I address how progress from observation and theory suggests two broad classes of accretion driven PPN jets: one for wider binaries (PPN-W) where the companion is outside the outer radius of the giant and accretes via Roche lobe overflow, and the other which occurs in the later stages of common envelope evolution (CEE) for close binaries (PPN-C). The physics within these scenarios connects to progress and open questions about the role and origin of magnetic fields in the engines and in astrophysical jets more generally.
