Detection of Exoplanet as a Binary Source of Microlensing Events in WFIRST Survey
arXiv:1909.11559 · doi:10.1093/mnras/stz2682
Abstract
We investigate the possibility of exoplanet detection orbiting source stars in microlensing events through WFIRST observations. We perform a Monto Carlo simulation on the detection rate of exoplanets via microlensing, assuming that each source star has at least one exoplanet. The exoplanet can reflect part of the light from the parent star or emit internal thermal radiation. In this new detection channel, we use microlensing as an amplifier to magnify the reflection light from the planet. In the literature, this mode of detecting exoplanets has been investigated much less than the usual mode in which the exoplanets are considered as one companion in binary lens events. Assuming days of observation per season with the cadence of minutes, we find the probability of rocky planet detection with this method to be virtually zero. However, there is non-zero probability, for the detection of Jovian planets. We estimate the detection rates of the exoplanets by this method, using WFIRST observation to be in single lens events and in the binary lens events.
arXiv commentAccepted for publication to MNRAS Main Journal. 7 pages, 3 figures
References in corpus (44)
- Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
- Analytic Lightcurves for Planetary Transit Searches
- Wide-Field InfrarRed Survey Telescope-Astrophysics Focused Telescope Assets WFIRST-AFTA 2015 Report
- On the Unique Solution of Planet and Star Parameters from an Extrasolar Planet Transit Light Curve
- A map of the day-night contrast of the extrasolar planet HD 189733b
- Most 1.6 Earth-Radius Planets are not Rocky
- Understanding the Mass-Radius Relation for Sub-Neptunes: Radius as a Proxy for Composition
- Modelling the Galactic Interstellar Extinction Distribution in Three Dimensions
- Unbound or Distant Planetary Mass Population Detected by Gravitational Microlensing
- Masses, Radii, and Orbits of Small Kepler Planets: The Transition from Gaseous to Rocky Planets
- Friends of Hot Jupiters I: A Radial Velocity Search for Massive, Long-Period Companions to Close-In Gas Giant Planets
- Interstellar Extinction Law toward the Galactic Center III: J, H, Ks bands in the 2MASS and the MKO systems, and 3.6, 4.5, 5.8, 8.0 micron in the Spitzer/IRAC system
- Frequency of Solar-Like Systems and of Ice and Gas Giants Beyond the Snow Line from High-Magnification Microlensing Events in 2005-2008
- Predictions of the WFIRST Microlensing Survey I: Bound Planet Detection Rates
- Interstellar Extinction Law in the J, H, and Ks Bands toward the Galactic Center
- The phase-dependent Infrared brightness of the extrasolar planet upsilon Andromedae b
- MOA-2011-BLG-293Lb: A test of pure survey microlensing planet detections
- Planet formation and migration
- Migrating Planets
- Simulation of a Space-Based Microlensing Survey for Terrestrial Extra-Solar Planets
- Interstellar Extinction Law toward the Galactic Center II: V, J, H, and Ks Bands
- How formation time-scales affect the period dependence of the transition between rocky super-Earths and gaseous sub-Neptunes and implications for
- Exoplanets imaging with a Phase-Induced Amplitude Apodization Coronagraph - I. Principle
- ExELS: an exoplanet legacy science proposal for the ESA Euclid mission I. Cold exoplanets
- Two Empirical Regimes of the Planetary Mass-Radius Relation
- Thermal Emission from Transiting Very-Hot Jupiters: Prospects for Ground-based Detection at Optical Wavelengths
- Planet formation around low mass stars: the moving snow line and super-Earths
- Optimal Survey Strategies and Predicted Planet Yields for the Korean Microlensing Telescope Network
- Planet formation around stars of various masses: Hot super-Earths
- N-body simulation insights into the X-shaped bulge of the Milky Way: Kinematics and distance to the Galactic Centre
- Direct Detection of Giant Close-In Planets Around the Source Stars of Caustic-Crossing Microlensing Events
- Probing Structures of Distant Extrasolar Planets with Microlensing
- Gravitational Microlensing I: A Unique Astrophysical Tool
- Understanding EROS2 observations toward the spiral arms within a classical Galactic model framework
- Illuminating Hot Jupiters in caustic crossing
- Gravitational microlensing of planets: the influence of planetary phase and caustic orientation
- Planetary microlensing signals from the orbital motion of the source star around the common barycentre
- Triple-lens Gravitational Microlensing: Critical Curves for Arbitrary Spatial Configuration
- MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection
- The Galactic Exoplanet Survey Telescope (GEST)
- Gravitational microlensing of stars with transiting planets
- Gravitational Microlensing Events as a Target for SETI project
- Can We Probe the Atmospheric Composition of an Extrasolar Planet from its Reflection Spectrum in a High-Magnification Microlensing Event?
- Probing the Atmospheres of Planets Orbiting Microlensed Stars via Polarization Variability
Cited by in corpus (13)
- Detecting isolated stellar-mass black holes by the Roman telescope
- MOA-2006-BLG-074: recognizing xallarap contaminants in planetary microlensing
- Microlensing due to free-floating moon-planet systems
- Revealing Short-period Exoplanets and Brown Dwarfs in the Galactic Bulge using the Microlensing Xallarap Effect with the \textit{Nancy Grace Roman Space Telescope}
- Sensitivity to habitable planets in the \textit{Roman} microlensing survey
- Microlensed Radio Emission from Exoplanets
- Infrared-Radio-follow-up Observations for Detection of the Magnetic Radio Emission of Extra-Solar Planets: A New Window to Detect Exoplanets
- Numerically studying the degeneracy problem in extreme finite-source microlensing events
- Detecting the inner regions of discs around sources of microlensing with Roman Space Telescope
- Impacts of Tidal Locking on Magnetospheric Energy Input to Exoplanet Atmospheres
- Variation of the stellar color in high-magnification and caustic-crossing microlensing events
- Mass-velocity dispersion relation by using the \textit{Gaia} data and its effect on interpreting short-duration and degenerate microlensing events
- Casting Light on Degeneracies: A Comprehensive Study of Lightcurve Variations in Microlensing Events OGLE-2017-BLG-0103 and OGLE-2017-BLG-0192