The advantages of using a Lucky Imaging camera for observations of microlensing events

Abstract

In this work, we study the advantages of using a Lucky Imaging camera for the observations of potential planetary microlensing events. Our aim is to reduce the blending effect and enhance exoplanet signals in binary lensing systems composed of an exoplanet and the corresponding parent star. We simulate planetary microlensing light curves based on present microlensing surveys and follow-up telescopes where one of them is equipped with a Lucky imaging camera. This camera is used at the Danish $1.54$-m follow-up telescope. Using a specific observational strategy, For an Earth-mass planet in the resonance regime, where the detection probability in crowded-fields is smaller, lucky imaging observations improve the detection efficiency which reaches 2 per cent. Given the difficulty of detecting the signal of an Earth-mass planet in crowded-field imaging even in the resonance regime with conventional cameras, we show that Lucky Imaging can substantially improve the detection efficiency.

arXiv comment12 pages, 14 figures, 2 tables, accepted for publication in MNRAS

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Cited by in corpus (6)

• Microlensing Searches for Exoplanets
• On the detection of free-floating planets through microlensing towards the Magellanic Clouds
• Sensitivity to habitable planets in the \textit{Roman} microlensing survey
• Variation of the stellar color in high-magnification and caustic-crossing microlensing events
• Measuring the stellar atmosphere parameters using follow-up polarimetry microlensing observations
• Eclipsing negative-parity image of gravitational microlensing by a giant-lens star