利用Rossby涡旋边界恢复吸积盘中的死区
Reviving Dead Zones in Accretion Disks by Rossby Vortices at their Boundaries
摘要：
年轻恒星天体的吸积盘模型表明，它们在距离恒星几个天文单位的地方不应该被电离，因此不应该受到被认为会导致吸积的MHD湍流的影响。这被认为是创造了一个“死区”，在那里吸积仍然无法解释。在这里，我们表明，死区的存在自洽地创建一个有利于洛夫莱斯等人（1999年）的Rossby波不稳定性的密度分布。这种不稳定性将在盘中产生并维持罗斯比漩涡，这可能导致增强的行星形成。
英文摘要：
Models of the accretion disks of Young Stellar Objects show that they should not be ionized at a few AU from the star, and thus not subject to the MHD turbulence believed to cause accretion. This has been suggested to create a 'Dead Zone' where accretion remains unexplained. Here we show that the existence of the Dead Zone self-consistently creates a density profile favorable to the Rossby Wave Instability of Lovelace et al. (1999). This instability will create and sustain Rossby vortices in the disk which could lead to enhanced planet formation.
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