# Probing Planets in Extragalactic Galaxies Using Quasar Microlensing.

@article{Dai2018ProbingPI,
title={Probing Planets in Extragalactic Galaxies Using Quasar Microlensing.},
author={Xinyu Dai and Eduardo Guerras},
journal={arXiv: Astrophysics of Galaxies},
year={2018}
}
• Published 31 January 2018
• Physics
• arXiv: Astrophysics of Galaxies
Previously, planets have been detected only in the Milky Way galaxy. Here, we show that quasar microlensing provides a means to probe extragalactic planets in the lens galaxy, by studying the microlensing properties of emission close to the event horizon of the supermassive black hole of the background quasar, using the current generation telescopes. We show that a population of unbound planets between stars with masses ranging from Moon to Jupiter masses is needed to explain the frequent Fek… Expand
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