---
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---
## 任务定位

从第二章正式内容抽取的开放研究任务，不是新的 Canonical 推导。

## 当前进展

已经得到稳恒质量流的格林解、远场环向偶极项及固定共轴圆环的一阶顺逆传播差；ζ=4 是经验标定。尚需完成的是因果源动力学、强场延拓、探测耦合与完整装置观测量。

<Equation name="grv-optical-length" />

<Equation name="grv-photon-sphere" />

<Equation name="grv-shadow" />

<Equation name="grv-rotation-field" />
<Equation name="grv-rotation-path" />

## 必须完成的环节

由纵横耦合和旋转源结构确定环向响应、探测耦合及强场解；再计算顺逆传播与临界捕获。区分源自转角速度、外场角速度和边界能量共轭量。

## 可交付结果与边界

因果场方程、适用域、弱场匹配、边界条件及带源／探测模型的光路计算。

一阶远场公式不是完整旋转强场或 Kerr 对应；本任务不预设非球形阴影的幅度。

## 来源与协作

最终合订稿 · 第二章 §五.4—5 (2.72)—(2.82)；小结第四项

[Gravity](/theory/gravity) · [Tests](/tests/gravity)

<CanonicalSource />