SIMBAD references

2024PASP..136i4401H - Publ. Astron. Soc. Pac., 136, part no 9, 4401 (2024/September-0)

A New Parameterization for Finding Solutions for Microlensing Exoplanet Light Curves.

HALL K.E., YEE J.C., SHIN I.-G., YANG H. and ZHANG J.

Abstract (from CDS):

The gravitational microlensing method of discovering exoplanets and multi-star systems can produce degenerate solutions, some of which require in-depth analysis to uncover. We propose a new parameter space that can be used to sample potential solutions more efficiently and is more robust at finding all degenerate solutions for the “central-resonant” caustic degeneracy. We identified two new parameters, k and h, that can be sampled in place of the mass ratios and separations of the systems under analysis to identify degenerate solutions. The parameter k is related to the size of the central caustic, Δξc, while h is related to the distance of a point along the k contour from log(s) = 0, where s is the projected planet-host separation. In this work, we present the characteristics of these parameters and the tests we conducted to prove their efficacy.

Abstract Copyright: © 2024. The Astronomical Society of the Pacific. All rights reserved.

Journal keyword(s): Gravitational microlensing - Binary lens microlensing - Gravitational microlensing exoplanet detection

Simbad objects: 9

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