Samaneh Sarbaz

Department of Physics, Sharif University of Technology

Frequency shift in binary microlensing 

Abstract: 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 $\Delta\nu/\nu∼10^{-12}$. We also investigate the feasibility of detecting this effect by employing Cross-Correlation methods.

یکشنبه  6 آبان 1403، ساعت 17:00

Sunday 27 October 2024 – 17:00 Tehran Time

Hybrid Seminar

دانشکده فیزیک – طبقه اول – کلاس فیزیک 3 Physics Department – first floor – Room Physics 3  / 

https://vc.sharif.edu/ch/cosmology

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