The Cosmic Microwave Background and Observational Convergence in the Ω[TINF][CLC][ITAL]m[/ITAL][/CLC][/TINF]-Ω[TINF]Λ[/TINF] Plane

  title={The Cosmic Microwave Background and Observational Convergence in the $\Omega$[TINF][CLC][ITAL]m[/ITAL][/CLC][/TINF]-$\Omega$[TINF]$\Lambda$[/TINF] Plane},
  author={C. Lineweaver},
  journal={The Astrophysical Journal},
  • C. Lineweaver
  • Published 27 May 1998
  • Physics
  • The Astrophysical Journal
I use the most recent cosmic microwave background (CMB) anisotropy measurements to constrain the leading cold dark matter models in the Omega_m - Omega_lambda plane. A narrow triangular region is preferred. This triangle is elongated in such a way that its intersection with even conservative versions of recent supernovae, cluster mass-to-light ratios and double radio source constraints, is small and provides the current best limits in the Omega_m - Omega_lambda plane: Omega_lambda = 0.62 +/- 0… 

Figures and Tables from this paper

Morphological number counts and redshift distributions to I = 25 from the Hubble Deep Fields: constraints on cosmological models from early‐type galaxies

ABSTRA C T We combine magnitude and photometric redshift data on galaxies in the Hubble Deep Fields with morphological classifications in order to separate out the distributions for early-type

Constraining the equation of state of the Universe from distant Type Ia supernovae and cosmic microwave background anisotropies

The magnitude–redshift relation for Type Ia supernovae is beginning to provide strong constraints on the cosmic densities contributed by matter, Ωm, and a cosmological constant, ΩΛ, although the

Cosmological parameters from cluster abundances, cosmic microwave background and IRAS

We combine information on cosmological parameters from cluster abundances, CMB primordial anisotropies and the IRAS 1.2 Jy galaxy redshift survey. We take as free parameters the present values of the

Origin of Quantum Space-Time and Primordial Black Hole

In the present theoretical work, an attempt has been made to derive an expression for the quantum volume of discrete space and its growth rate using first rank tensorial Einstein-Gauss gravitation

The astrobiological landscape : philosophical foundations of the study of cosmic life

Introduction Acknowledgements 1. Astrobiology: the colour out of space? 2. Cosmology, life, and duration of the past 3. Cosmology, life, and selection effects 4. Cosmology, life, and the archipelago


Dynamic dark energy (DDE) models are often designed to solve the cosmic coincidence (why, just now, is the dark energy densityde, the same order of magnitude as the matter densitym?) by

Three's a Crowd: On Causes, Entropy and Physical Eschatology

Recent discussions of theorigins of the thermodynamical temporal asymmetry (“thearrow of time”) by Huw Price and others arecritically assessed. This serves as amotivation for consideration of

Is mass quantized

The cosmological constant combined with Planck's constant and the speed of light implies a quantum of mass of approximately 2×10-65g. This follows either from a generic dimensional analysis, or from

'Hyper Parameters' Approach to Joint Estimation: Applications to Cepheid-Calibrated Distances and X-Ray Clusters

We use a generalized procedure for the combined likelihood analysis of different cosmological probes, the 'hyper-parameters' method, that allows freedom in the relative weights of the raw


▪ Abstract In forthcoming years, connections between cosmology and particle physics will become increasingly important with the advent of a new generation of cosmic microwave background (CMB)



Constraints on cosmological parameters from recent measurements of cosmic microwave background anisotropy

A key prediction of cosmological theories for the origin and evolution of structure in the Universe is the existence of a ‘Doppler peak’ in the angular power spectrum of cosmic microwave background

A&A, submitted, astro-ph/9711139 Lineweaver

  • Ph.D. thesis, California Institute of Technology Lesgourges, J. et al
  • 1998

What Can Cosmic Microwave Background Observations Already Say about Cosmological Parameters in Open and Critical-Density Cold Dark Matter Models?

We use a combination of the most recent cosmic microwave background (CMB) flat-band power measurements to place constraints on Hubble's constant h and the total density of the universe Ω0 in the

The Average Mass and Light Profiles of Galaxy Clusters

The systematic errors in the virial mass-to-light ratio, Mv/L, of galaxy clusters as an estimator of the field M/L value are assessed. We overlay 14 clusters in redshift space to create an ensemble

Ap.J. , in press

  • Ap.J. , in press
  • 1998

Looking Deep in the Southern Sky

Is there a cosmological constant

The grant contributed to the publication of 18 refereed papers and 5 conference proceedings. The primary uses of the funding have been for page charges, travel for invited talks related to the grant

A Measurement of the Angular Power Spectrum of the Anisotropy in the Cosmic Microwave Background

We report on a measurement of the angular power spectrum of the anisotropy in the cosmic microwave background (CMB). The anisotropy is measured in 23 different multipole bands from l = 54 (≈ 3°) to l

Three-Dimensional Orbits of Metal-poor Halo Stars and the Formation of the Galaxy

We present the three-dimensional orbital motions of metal-poor stars in conjunction with their metal abundances, for the purpose of getting insight into the formation process of the Galaxy. Our

Phil. Trans. R. Soc London A

  • Phil. Trans. R. Soc London A
  • 1998