RSAA Colloquium: Isobel Hook (U. Lancaster)

Image

Professor Isobel Hook at the VISTA Telescope. Credit: Roelof de Jong

Supernova cosmology with Euclid, Rubin and TiDES 
 

In this talk I will discuss recent results and upcoming prospects for observing distant supernovae. I will begin with a brief review of previous supernova surveys and the use of Type Ia supernovae in cosmology. Recent results suggest that the properties of dark energy may be changing with time, in contrast to the cosmological constant explanation for dark energy. This provides new impetus for improving our measurements of the cosmological parameters.

I will describe prospects for supernova observations from the Time Domain Extragalactic Survey (TiDES) which will use the 4MOST instrument to obtain spectra tens of thousands of supernovae and their host galaxies discovered by the Rubin Observatory’s Legacy Survey of Space and Time (LSST). I will also describe some early results and prospects for supernova science with the Euclid mission, and discuss how the combination of Rubin/LSST, TiDES and Euclid will advance supernova cosmology.