是什么阻止了内部重力波对太阳均匀自转的干扰？
What Prevents Internal Gravity Waves From Disturbing the Solar Uniform Rotation?
摘要：
内重力波（IGW）是恒星包层中对流自然产生的，是恒星辐射内部角动量传输的重要机制。先前的工作已经确定，它们可以在足够短的时间尺度上运行，以解释太阳内部旋转作为深度的函数。我们表明，IGWs的自然行动是产生大尺度振荡的太阳旋转作为深度的函数，这是在显着的对比，几乎均匀的旋转外辐射信封的太阳。因此，需要一个额外的角动量输运机制，并且分子或剪切诱导的湍流粘度都不足以使轮廓平滑。像泰勒-斯普鲁特发电机这样的磁过程可以使旋转轮廓变平。因此，我们得出结论，IGW必须与磁角动量输运过程一起工作，如果他们在所有操作。此外，这两类机制必须在一定程度上抑制平均分子量梯度，以解释最近的证据，快速旋转嵌入核心的太阳。
英文摘要：
Internal gravity waves (IGWs) are naturally produced by convection in stellar envelopes, and they could be an important mechanism for transporting angular momentum in the radiative interiors of stars. Prior work has established that they could operate over a short enough time scale to explain the internal solar rotation as a function of depth. We demonstrate that the natural action of IGWs is to produce large scale oscillations in the solar rotation as a function of depth, which is in marked contrast to the nearly uniform rotation in the outer radiative envelope of the Sun. An additional angular momentum transport mechanism is therefore required, and neither molecular nor shear-induced turbulent viscosity is sufficient to smooth out the profile. Magnetic processes, such as the Tayler-Spruit dynamo, could flatten the rotation profile. We therefore conclude that IGWs must operate in conjunction with magnetic angular momentum transport processes if they operate at all. Furthermore, both classes of mechanisms must be inhibited to some degree by mean molecular weight gradients in order to explain the recent evidence for a rapidly rotating embedded core in the Sun.
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