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arXiv 0712.2154gr-qc
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史瓦西几何中的多普勒效应

Doppler effect in Schwarzschild geometry

A. Radosz, A. T. Augousti, K. Ostasiewicz

摘要:

在广义相对论中考虑的多普勒频移涉及不同的、引力的和运动学的起源的混合贡献,并且对于大多数度量或轨迹,它采取复杂的形式。由于特定的对称性,多普勒频移的表达式可以简化。在史瓦西时空中,它在观测者径向下落和径向零测地线的情况下因式分解。由此产生的表达式是由因素,可以确定所产生的贡献,从经典,狭义相对论和广义相对论的起源。这个结果是更普遍的:它适用于整个类的观察员平行于零测地线的空间路径时,接收信号。在克尔度规的情况下,它也适用于特定类型的入轨。

英文摘要:

The Doppler shift considered in general relativity involves mixed contributions of distinct, gravitational and kinematical origins and for most metrics or trajectories it takes a complex form. The expression for the Doppler shift may simplify due to particular symmetries. In Schwarzschild spacetime it factorizes in the case of radial fall for an observer and radial null geodesic. The resulting expression is composed of factors that can be identified with contributions arising from classical, special relativistic and general relativistic origins. This result turns out to be more general: it holds for the whole class of observers travelling parallel to the spatial path of null geodesics when receiving the signal. It also holds for a particular type of in-fall in the case of a Kerr metric.

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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