Results 31 to 40 of about 5,210 (169)

The 6dF Galaxy Survey: final redshift release (DR3) and southern large-scale structures [PDF]

open access: yes, 2009
We report the final redshift release of the 6dF Galaxy Survey (6dFGS), a combined redshift and peculiar velocity survey over the southern sky (|b| > 10°). Its 136 304 spectra have yielded 110 256 new extragalactic redshifts and a new catalogue of 125 071
D. Jones   +32 more
semanticscholar   +1 more source

Local gravitational redshifts can bias cosmological measurements [PDF]

open access: yes, 2015
Measurements of cosmological parameters via the distance-redshift relation usually rely on models that assume a homogenous universe. It is commonly presumed that the large-scale structure evident in our Universe has a negligible impact on the measurement
R. Wojtak, T. Davis, Jophiel Wiis
semanticscholar   +1 more source

The evolution of the dust temperatures of galaxies in the SFR–M∗ plane up to z ~ 2 [PDF]

open access: yes, 2013
We study the evolution of the dust temperature of galaxies in the SFR− M∗ plane up to z ~ 2 using far-infrared and submillimetre observations from the Herschel Space Observatory taken as part of the PACS Evolutionary Probe (PEP) and Herschel Multi-tiered
B. Magnelli   +40 more
semanticscholar   +1 more source

Observational Constraints on the Nature of Dark Energy: First Cosmological Results from the ESSENCE Supernova Survey [PDF]

open access: yes, 2007
We present constraints on the dark energy equation-of-state parameter, w = P/(ρc2), using 60 SNe Ia from the ESSENCE supernova survey. We derive a set of constraints on the nature of the dark energy assuming a flat universe.
W. M. Wood-Vasey   +36 more
semanticscholar   +1 more source

Directly observed relations in complete galaxy samples and the predictions of redshift-distance power laws [PDF]

open access: yesProceedings of the National Academy of Sciences, 1986
Directly observed relations in complete galaxy samples (apparent magnitude or diameter vs. redshift) are compared with the predictions of redshift-distance power laws. The predictions are obtained by an objective, nonparametric, statistically uniform, and fully reproducible procedure.
openaire   +2 more sources

A Time-symmetric Hubble-like Law: Light Rays Grazing Randomly Moving Galaxies Show Distance-Proportional Redshift [PDF]

open access: yesZeitschrift für Naturforschung A, 2003
A new class of dissipative structures is proposed that live in real space rather than phase space. A light ray passing through a soup of randomly moving gravitating masses is a case in point. It suffers a “dynamic path elongation” since the random pushes and pulls have a greater probability of increasing than decreasing its path length.
O. E. Rössler, D. Fröhlich, N. Kleiner
openaire   +1 more source

GWTC-4.0: Constraints on the Cosmic Expansion Rate and Modified Gravitational-wave Propagation [PDF]

open access: yesAstrophysical Journal Letters
We analyze data from 142 of the 218 gravitational-wave (GW) sources in the fourth LIGO–Virgo–KAGRA Collaboration (LVK) Gravitational-Wave Transient Catalog (GWTC-4.0) to estimate the Hubble constant H0 jointly with the population properties of merging ...
The Ligo Scientific Collaboration   +499 more
semanticscholar   +1 more source

Gamma-ray bursts as the death throes of massive binary stars [PDF]

open access: yes, 1992
We propose that gamma-ray bursts are created in the mergers of double neutron star binaries and black hole neutron star binaries at cosmological distances.
R. Narayan, Bohdan Paczy'nski, T. Piran
semanticscholar   +1 more source

Galaxies and Intergalactic Matter at Redshift z ~ 3: Overview [PDF]

open access: yes, 2002
We present the first results from a survey of the relative spatial distributions of galaxies, intergalactic neutral hydrogen, and intergalactic metals at high redshift.
K. Adelberger   +3 more
semanticscholar   +1 more source

The Dark Energy Survey Supernova Program: Cosmological Analysis and Systematic Uncertainties [PDF]

open access: yesAstrophysical Journal
We present the full Hubble diagram of photometrically classified Type Ia supernovae (SNe Ia) from the Dark Energy Survey supernova program (DES-SN).
M. Vincenzi   +97 more
semanticscholar   +1 more source

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