Probing Planets in Extragalactic Galaxies Using Quasar Microlensing
arXiv:1802.00049 · doi:10.3847/2041-8213/aaa5fb
Abstract
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 line energy shifts observed in the gravitationally lensed quasar RXJ1131-1231 at a lens redshift of or 3.8 billion light-years away. We constrain the planet mass fraction to be larger than 0.0001 of the halo mass, which is equivalent to 2,000 objects ranging from Moon to Jupiter mass per main sequence star.
8 preprint pages, 4 figures, accepted by ApJ Letters
References in corpus (8)
- Constraining Black Hole Spin Via X-ray Spectroscopy
- No large population of unbound or wide-orbit Jupiter-mass planets
- X-Ray and Optical Microlensing in the Lensed Quasar PG 1115+080
- Advances in exoplanet science from Kepler
- Gravitational Microlensing
- Measuring the Innermost Stable Circular Orbits of Supermassive Black Holes
- The changing X-ray time lag in MCG-6-30-15
- Extended X-ray Monitoring of Gravitational Lenses with Chandra and Joint Constraints on X-ray Emission Regions
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