Anaïs Moller (ANU): Update from Australia’s SkyMapper and the DES supernova cosmology analysis
The Dark Energy Survey (DES) is using four probes to investigate the dynamics of
the expansion of the Universe. The DES Supernova Program (DES-SN) is observing
27 square degrees with a 6-day cadence to obtain a large sample of type Ia
supernovae for cosmology. In collaboration with DES, OzDES is using the AAT to
obtain redshifts and classifications for objects in the DES fields. While
probing dark energy using type Ia supernovae is the prime aim of the supernova
survey, the observing strategy enables us to conduct a number of other
investigations, such as AGN reverberation mapping and galaxy properties.
The SkyMapper Telescope is a 1.3m wide-field robotic optical telescope located
at Siding Spring Observatory in Australia. SkyMapper is performing a digital
Southern Sky Survey in six filters (uvgriz) and the SkyMapper Transient (SMT)
survey. The later, explores variability in the southern sky by performing both a
rolling search and a Target of Opportunity program . The SkyMapper Supernova
program searches ~1000deg2 per night with a 3-4 day cadence, discovering
supernovae at redshift z < 0.1.
In this talk, I will present updates on the two projects: DES preliminary
cosmological parameter constraints from the first 3-years of the DES-SN survey
and SkyMapper first results.