Cosmology with the Nearby Supernova Factory
Abstract
Nearby Type Ia supernovae serve as the critical reference for measurement of the accelerating expansion of the universe and its absolute expansion rate locally. Using the unique spectrophotometric spectral time series of Type Ia supernovae in the nearby smooth Hubble flow assembled by the Nearby Supernova Factory, whose flux calibration is carefully tied to both standard stars and the tertiary stars of high-redshift supernova surveys, and employing corrections for biases affecting current cosmological measurements, we are able to produce new determinations of the dark energy equation of state and the local expansion rate.
- Publication:
-
American Astronomical Society Meeting Abstracts #225
- Pub Date:
- January 2015
- Bibcode:
- 2015AAS...22525511A