0000000001053780

AUTHOR

Kailash C. Sahu

showing 2 related works from this author

A brown dwarf orbiting an M-dwarf:MOA 2009-BLG-411L

2012

Context. Caustic crossing is the clearest signature of binary lenses in microlensing. In the present context, this signature is diluted by the large source star but a detailed analysis has allowed the companion signal to be extracted.Aims. MOA 2009-BLG-411 was detected on August 5, 2009 by the MOA-Collaboration. Alerted as a high-magnification event, it was sensitive to planets. Suspected anomalies in the light curve were not confirmed by a real-time model, but further analysis revealed small deviations from a single lens extended source fit.Methods. Thanks to observations by all the collaborations, this event was well monitored. We first decided to characterize the source star properties b…

Brown dwarfContext (language use)Astrophysicsgravitational lensing: microAstrophysics::Cosmology and Extragalactic AstrophysicsGravitational microlensing01 natural sciencesSettore FIS/05 - Astronomia e AstrofisicaPlanet0103 physical sciencesAstrophysics::Solar and Stellar Astrophysics010303 astronomy & astrophysicsAstrophysics::Galaxy AstrophysicsPhysicsstars: individual: MOA 2009-BLG-411L010308 nuclear & particles physicsAstronomyMOA 2009-BLG-411L; gravitational lensing; starsAstronomy and AstrophysicsRadiusLight curveGalaxyGravitational lensbinaries: generalSpace and Planetary ScienceAstrophysics::Earth and Planetary Astrophysicsbinaries: general; gravitational lensing: micro; stars: individual: MOA 2009-BLG-411L
researchProduct

The WFIRST Exoplanet Microlensing Survey

2018

The Wide Field Infrared Survey Telescope (WFIRST) was the top ranked large space mission in the 2010 New Worlds, New Horizons decadal survey, and it was formed by merging the science programs of 3 different mission concepts, including the Microlensing Planet Finder (MPF) concept (Bennett \etal\ 2010). The WFIRST science program (Spergel \etal\ 2015) consists of a general observer program, a wavefront controlled technology program, and two targeted science programs: a program to study dark energy, and a statistical census of exoplanets with a microlensing survey, which uses nearly one quarter of WFIRST's observing time in the current design reference mission. The New Worlds, New Horizons (de…

Earth and Planetary Astrophysics (astro-ph.EP)FOS: Physical sciencesAstrophysics - Earth and Planetary Astrophysics
researchProduct