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arXiv 1111.1325gr-qcastro-ph.IM
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相对论空间天体测量的光偏转封闭形式

Light Deflection for relativistic space astrometry in closed form

Stefano Bertone, Christophe Le Poncin-Lafitte

摘要:

鉴于未来全球空间天体测量所达到的极端精度,需要对观测进行全球相对论建模。天体测量观测量的相对论性定义对于确定天体的唯一坐标、视差和自行是必不可少的。标准程序是显式求解零测地线方程,以描述天体发射并被移动观测卫星接收的光子的轨迹。然而,如果人们使用最近的时间传递函数的形式主义来建立天体测量设置,则可以避免这项任务。

英文摘要:

Given the extreme accuracy reached by future global space astrometry, one needs a global relativistic modeling of observations. A relativistic definition of astrometric observables is then essential to find uniquely coordinates, parallax and proper motion of a stellar object. The standard procedure is to explicitly solve the null geodesic equations to describe the trajectory of a photon emitted by a celestial object and received by a moving observing satellite. However, this task can be avoided if one builds an astrometric set up using the recent formalism of time transfer functions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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