324 citations · 995 across the 9 of their papers we have counts for
8 papers · 1 filter
Type Ia Supernova Distances at z > 1.5 from the Hubble Space Telescope Multi-Cycle Treasury Programs: The Early Expansion Rate
Adam G. Riess, Steven A. Rodney, Daniel M. Scolnic +31
We present an analysis of 15 Type Ia supernovae (SNe Ia) at redshift z > 1 (9 at 1.5 < z < 2.3) recently discovered in the CANDELS and CLASH Multi-Cycle Treasury programs using WFC…
Dark energy two decades after: Observables, probes, consistency tests
Dragan Huterer, Daniel L Shafer
The discovery of the accelerating universe in the late 1990s was a watershed moment in modern cosmology, as it indicated the presence of a fundamentally new, dominant contribution…
Testing CDM at the lowest redshifts with SN Ia and galaxy velocities
Dragan Huterer, Daniel L. Shafer, Daniel Scolnic +1
Peculiar velocities of objects in the nearby universe are correlated due to the gravitational pull of large-scale structure. By measuring these velocities, we have a unique opportu…
No evidence for bulk velocity from type Ia supernovae
Dragan Huterer, Daniel L. Shafer, Fabian Schmidt
We revisit the effect of peculiar velocities on low-redshift type Ia supernovae. Velocities introduce an additional guaranteed source of correlations between supernova magnitudes t…
Robust model comparison disfavors power law cosmology
Daniel L. Shafer
Late-time power law expansion has been proposed as an alternative to the standard cosmological model and shown to be consistent with some low-redshift data. We test power law expan…
Multiplicative errors in the galaxy power spectrum: self-calibration of unknown photometric systematics for precision cosmology
Daniel L. Shafer, Dragan Huterer
We develop a general method to "self-calibrate" observations of galaxy clustering with respect to systematics associated with photometric calibration errors. We first point out the…
Chasing the phantom: A closer look at Type Ia supernovae and the dark energy equation of state
Daniel L. Shafer, Dragan Huterer
Some recent observations provide evidence for phantom dark energy -- a value of the dark energy equation of state less than the cosmological-constant value of . We focus…
Principal components of dark energy with SNLS supernovae: the effects of systematic errors
Eduardo J. Ruiz, Daniel L. Shafer, Dragan Huterer +1
We study the effects of current systematic errors in Type Ia supernova (SN Ia) measurements on dark energy (DE) constraints using current data from the Supernova Legacy Survey (SNL…