Constraining Dark Energy with Type Ia Supernovae and Large-Scale Structure

@article{Perlmutter1999ConstrainingDE,
  title={Constraining Dark Energy with Type Ia Supernovae and Large-Scale Structure},
  author={Saul Perlmutter and Michael S. Turner and Martin White},
  journal={Physical Review Letters},
  year={1999},
  volume={83},
  pages={670-673}
}
Measurements of the distances to type Ia supernovae have produced strong evidence that the expansion of the Universe is accelerating, implying the existence of a nearly uniform component of dark energy with negative pressure. We show that constraints to this mysterious component based upon large-scale structure nicely complement the SN Ia data, and that together they require {Omega}{sub X}={rho}{sub X}/{rho}{sub crit}{element_of}(0.6,thinsp0.7) and w=p{sub X}/{rho}{sub X}{lt}{minus}0.6 (95… 

Figures from this paper

Observational constraints on a variable dark energy model

We study the effect of a phenomenological parameterized quintessence model on low, intermediate and high redshift observations. At low and intermediate redshifts, we use the Gold sample of supernova

Constraining the quintessence equation of state with SnIa data and CMB peaks

Quintessence has been introduced as an alternative to the cosmological constant scenario to account for the current acceleration of the universe. This new dark energy component allows values of the

Constraining the dark energy with galaxy cluster x-ray data

The equation of state characterizing the dark energy component is constrained by combining Chandra observations of the X-ray luminosity of galaxy clusters with independent measurements of the

Observational constraints on low redshift evolution of dark energy: How consistent are different observations?

The dark energy component of the Universe is often interpreted either in terms of a cosmological constant or as a scalar field. A generic feature of the scalar field models is that the equation of

COSMOLOGICAL IMPLICATIONS FROM OBSERVATIONS OF TYPE IA SUPERNOVAE

▪ Abstract Distant type Ia supernovae (SNe Ia) appear fainter than their local counterparts. Independent of what explanation will eventually be found to be correct, this implies a significant change

A Pressure Parametric Dark Energy Model

In this paper, we propose a new pressure parametric model of the total cosmos energy components in a spatially flat Friedmann-Robertson-Walker (FRW) universe and then reconstruct the model into

Observational tests of a two parameter power-law class modified gravity in Palatini formalism

CONTEXT: In this work we propose a modified gravity action $f(R)=({R}^{n}\ensuremath{-}{R}_{0}^{n}{)}^{1/n}$ with two free parameters of $n$ and ${R}_{0}$ and derive the dynamics of a universe for

Dark energy constraints in light of Pantheon SNe Ia, BAO, cosmic chronometers and CMB polarization and lensing data

To explore whether there is new physics going beyond the standard cosmological model or not, we constrain seven cosmological models by combining the latest and largest Pantheon Type Ia supernovae

Consistency of f(R)=R 2 -R 0 2 gravity with cosmological observations in the Palatini formalism

In this work we study the dynamics of the Universe in $f(R)=\sqrt{{R}^{2}\ensuremath{-}{R}_{0}^{2}}$ modified gravity with the Palatini formalism. We use data from recent observations, such as the

Measuring Cosmology with Supernovae

Over the past decade, supernovae have emerged as some of the most powerful tools for measuring extragalactic distances. A well developed physical understanding of type II supernovae allow them to be
...