5 papers
Testing CDM versus dynamical dark energy in one year: A DESI spectroscopic follow-up program for Rubin supernovae
Jannik Truong, Greg Aldering, Saul Perlmutter +2
Combined cosmological probes currently indicate that best-fit values in the parametrization of dynamical dark energy deviate from CDM by . In this work, we p…
Banana Split: Improved Cosmological Constraints with Two Light-Curve-Shape and Color Populations Using Union3.1+UNITY1.8
David Rubin, Taylor Hoyt, Greg Aldering +1
SNe Ia have been used to provide key constraints on the equation-of-state parameter of dark energy. They are generally standardized under the assumption that they belong to a singl…
Union3.1: Self-consistent Measurements of Host Galaxy Properties for 2000 Type Ia Supernovae
Taylor J. Hoyt, David Rubin, Greg Aldering +3
The determination of distances using time-series photometry of Type Ia supernovae (SNe Ia) relies on a ~5% empirical correction related to the properties of their host galaxies, e.…
Three-dimensional scene reconstruction using Roman slitless spectra
Tri L. Astraatmadja, Andrew S. Fruchter, Susana E. Deustua +10
The Nancy Grace Roman Space Telescope will carry out a wide-field imaging and slitless spectroscopic survey of Type Ia Supernovae to improve our understanding of dark energy. Cruci…
Union Through UNITY: Cosmology with 2,000 SNe Using a Unified Bayesian Framework
David Rubin, Greg Aldering, Marc Betoule +8
Type Ia supernovae (SNe Ia) were instrumental in establishing the acceleration of the universe's expansion. By virtue of their combination of distance reach, precision, and prevale…