Frequency shift in binary microlensing

Samaneh Sarbaz

doi:10.1093/mnras/stae1938

2024-08-12

Samaneh Sarbaz

S. Rahvar *

DOI：10.1093/mnras/stae1938

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摘要

En 中文

Gravitational microlensing with binary lensing is one of the channels for detecting exoplanets. Due to the degeneracy of the lens parameters for the binary microlensing, additional features such as parallax and finite-size effects need to identify the lens parameters. The frequency-shift effect as the relativistic analogy of the gravity assist for the photons, is an extra observation that provides additional constraint between the lens parameters. In this work, we extend the application of the frequency-shift effect to binary microlensing and derive the frequency shift during the lensing and caustic crossing. The frequency shift for the binary lens is of the order of Delta(nu/nu)similar to 10(-12). We also investigate the feasibility of detecting this effect by employing cross-correlation methods.

Keyword:

gravitational lensing: micro

instrumentation: spectrographs

Planetary systems

期刊

Monthly Notices of the Royal Astronomical Society

IF:

4.8

论文数:

7.1W

被引数:

25.0W

机构

Sharif University of Technology

学者数:

1.1W

论文数: 1.1W

被引数: 9.5K

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