标题： 累积拖拽 - 静止轴对称时空的固有特性 显示英文标题

标题： Cumulative Dragging - An Intrinsic Characteristic of Stationary Axisymmetric Spacetime

摘要： 最近由Prasanna定义的累积阻力指数已被推广以包括离心加速度。 我们研究了Kerr度规和Neugebauer-Meinel度规（代表一个自引力旋转圆盘）及其牛顿近似下的阻力指数行为。 在完整形式和近似形式下，给定参数集的指数行为的相似性表明，该指数表征了旋转时空的固有属性。 分析给定参数集的指数显示了对它们的可能约束。 显示英文摘要

摘要： The Cumulative Drag Index defined recently by Prasanna has been generalised to include the centrifugal acceleration. We have studied the behaviour of the drag index for the Kerr metric and the Neugebauer-Meinel metric representing a self-gravitating rotating disk and their Newtonian approximations. The similarity of the behaviour of the index for a given set of parameters both in the full and approximated forms, suggests that the index characterises an intrinsic property of spacetime with rotation. Analysing the index for a given set of parameters shows possible constraints on them.