Address: Jet Propulsion Laboratory M/S 169-506 4800 Oak Grove Drive Pasadena, CA 91109
			Phone: 818.354.3304
			Fax: 818.354.8895
			Email: Click here

Jason Rhodes

Weak Gravitational Lensing as a Probe of Dark Matter and Dark Energy
Weak gravitational lensing, where the sizes and shapes of background galaxies are slightly distorted by foreground dark matter, is one of the premier tools of precision cosmology. Measuring the small coherent distortion of distant galaxies provides information about the amount of distribution of dark matter in the Universe. Furthermore, the measurement of the time evolution of dark matter structures is a powerful probe of the dark energy. We have several ongoing research projects in the area of weak lensing using both ground- and space-based data. This includes the 2-Square degree HST COSMOS field, the largest contiguous HST field. In addition, we are developing and planning for future space-based weak lensing experiments,including the SuperNova Acceleration Probe, a proposed implementation of the NASA/DOE Joint Dark Energy Mission, the Dark Universe Explorer, an ESA-led weak lensing satellite, and the GRAvitaitonal Lensing Experiment (GRALE), a proposed mid-ex mission.

DUNE
The purpose of the DUNE mission (Dark UNiverse Explorer) is to shed light on the dark components of the Universe with a wide field imager in space.

SNAP
SNAP is a proposed optical/infrared mission that would detect thousands of Type Ia supernova plus conduct weak-lensing studies.

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