时间局部保守的二进制动力学在第四次后明科夫斯基秩序
Christoph Dlapa1, Gregor Kälin1, Zhengwen Liu2,3
1Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
Physical review letters
|June 15, 2024
概括
这项研究推导出了非旋转二进制系统的普遍保守动力学,使用散射数据准确地描述了它们的运动. 这些发现增强了对通用轨道的引力波建模.
科学领域:
- 一般相对论一般相对论.
- 引力物理 引力物理
- 天体物理力学动力学
背景情况:
- 在通用轨道上描述二进制系统需要了解时间上的局部和非局部效应.
- 之前的工作确立了保守的动态,但缺乏完整的局部在时间描述.
研究的目的:
- 在第四次后明科夫斯基次序 (O(G^4) 的非旋转二进制系统中推导出普遍的局部时间保守动力学.
- 将非局部时间效应纳入并重建通用轨道的关键动态量.
主要方法:
- 计算了非局部在时间上的对偏斜角度的贡献.
- 从完整的保守值中删除非局部效应以隔离局部动态.
- 重建了辐射作用,质量中心动量,以及一般轨道的哈密尔顿式.
主要成果:
- 在O{\displaystyle O{\mathrm {G} ^{4}}处推导出普遍非旋转的局部时间保守动态.
- 成功地将非局部术语用于圆形运动,直到第六个后牛顿次序.
- 在重叠的制度中与后牛顿的最先进状态达成了很好的协议.
结论:
- 衍生动力学提供了迄今为止使用散射数据最准确地描述了重力约束的二进制星系.
- 这些结果很容易适用于对二进制系统的引力波形状建模.
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