Constraints on scalar - field dark energy from the Cosmic Lens All - Sky Survey gravitational lens statistics
Mar, 2004
8 pages
Published in:
- Astrophys.J.Lett. 607 (2004) L71-L74
e-Print:
- astro-ph/0403256 [astro-ph]
DOI:
Report number:
- KSUPT-04-01
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Abstract: (arXiv)
We use the statistics of strong gravitational lensing based on the Cosmic Lens All-Sky Survey (CLASS) data to constrain cosmological parameters in a spatially-flat, inverse power-law potential energy density, scalar-field dark energy cosmological model. The lensing-based constraints are consistent with, but weaker than, those derived from Type Ia supernova redshift-magnitude data, and mildly favor the Einstein cosmological constant limit of this dark energy model.- gravitation: lens
- statistics
- dark energy
- field theory: scalar
- energy: density
- cosmological constant
- supernova
- galaxy
- numerical calculations: interpretation of experiments
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