Published June 3, 2019
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Point source models for the gravitational lens B1608+656: Indeterminacy in the prediction of the Hubble constant
- Creators
- Surpi, Gabriela
- Blandford, Roger
Abstract
We apply elliptical isothermal mass models to reproduce the point source properties, i.e. image positions, flux density ratios and time delay ratios, of the quadruple lens B1608+656. A wide set of suitable solutions is found, showing that models that only fit the properties of point sources are under-constrained and can lead to a large uncertainty in the prediction of H_◦. We present two examples of models predicting H_◦ = 100kms^(−1)Mpc^(−1) (χ^2 = 4) and H_◦ = 69kms^(−1)Mpc^(−1) (χ^2=24).
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Additional details
- Eprint ID
- 96038
- Resolver ID
- CaltechAUTHORS:20190603-111346826
- Created
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2019-06-03Created from EPrint's datestamp field
- Updated
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2023-06-01Created from EPrint's last_modified field
- Caltech groups
- TAPIR