南华大学学报（自然科学版）2024，Vol.38Issue(2)：60-65,6.DOI:10.19431/j.cnki.1673-0062.2024.02.008
脉冲星自旋对Römer延迟修正项的影响
The Influence of Pulsar Spin on Römer Delay
摘要
Abstract
In pulsar binary systems,the Römer delay correction refers to the variation in the time it takes for pulsar signals to reach Earth due to the orbital motion of the pulsar.This paper considers the second-order post-Newtonian equations of motion that include the coupling effects of spin and orbit.Based on this,it derives a new expression for the Römer delay correction and provides a magnitude analysis of the impact of spin on the Römer de-lay.The new Römer delay correction takes into account the influence of the pulsar's spin on its orbital motion,providing a theoretical basis for more precise pulsar radio astronomi-cal observations and tests of gravity.关键词
后牛顿近似/双星系统/脉冲星/时间模型Key words
post-Newtonian approximation/binary system/pulsar/timing model分类
天文与地球科学引用本文复制引用
张阳光,司徒亨健,杨波,林文斌..脉冲星自旋对Römer延迟修正项的影响[J].南华大学学报（自然科学版）,2024,38(2):60-65,6.基金项目
国家自然科学基金项目(11973025 （）
12303079) （）
湖南省教育厅项目(22B0446) （22B0446）
