中子星壳中的涡旋钉扎和动力学
Vortex pinning and dynamics in the neutron star crust
摘要:
Anderson和Itoh在1975年指出,超流涡旋与中子星外壳之间相互作用的本质是涡旋蠕动的核心,也是故障的原因,这一直是天体物理学中一个长期存在的问题。使用一种定性的新方法,我们遵循的动力学作为超流漩涡移动响应的存在下的“核”(核缺陷的地壳)。产生的运动垂直于力,类似于推动旋转的陀螺的运动。我们表明,原子核排斥在中子星地壳的涡旋,并作为一个函数的涡旋核分离的力的特征。
英文摘要:
The nature of the interaction between superfluid vortices and the neutron star crust, conjectured by Anderson and Itoh in 1975 to be at the heart vortex creep and the cause of glitches, has been a long-standing question in astrophysics. Using a qualitatively new approach, we follow the dynamics as superfluid vortices move in response to the presence of "nuclei" (nuclear defects in the crust). The resulting motion is perpendicular to the force, similar to the motion of a spinning top when pushed. We show that nuclei repel vortices in the neutron star crust, and characterize the force as a function of the vortex-nucleus separation.
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