Starspot induced effects in microlensing events with rotating source star

TL;DR

This paper investigates how starspots on rotating source stars affect microlensing light curves, considering both single and binary lens systems, to identify anomalies caused by stellar surface features.

Contribution

It introduces a detailed simulation of starspot effects on microlensing light curves, accounting for source star rotation and lens orbital motion, which is a novel approach.

Findings

Starspots cause detectable anomalies in microlensing light curves.

Rotation and orbital motion influence the starspot-induced effects.

Simulations help distinguish starspot effects from other anomalies.

Abstract

We consider the effects induced by the presence of hot and cold spots on the source star in the light curves of simulated microlensing events due to either single or binary lenses taking into account the rotation of the source star and the orbital motion of the lens system. Our goal is to study the anomalies induced by these effects on simulated microlensing light curves.