Results 121 to 130 of about 4,302,843 (380)

Cosmology with Redshift Surveys of Radio Sources [PDF]

open access: yes, 1998
We use the K-z relation for radio galaxies to illustrate why it has proved difficult to obtain definitive cosmological results from studies based entirely on catalogues of the brightest radio sources, e.g. 3C. To improve on this situation we have been undertaking redshift surveys of complete samples drawn from the fainter 6C and 7C radio catalogues. We
Rawlings, S   +4 more
openaire   +3 more sources

Cosmic Complementarity: H0 and Ωm from Combining Cosmic Microwave Background Experiments and Redshift Surveys [PDF]

open access: yes, 1998
We show that the detection of acoustic oscillations in both upcoming cosmic microwave background (CMB) satellite experiments and large-redshift surveys can yield 5% determinations of H0 and Ωm, an order-of-magnitude improvement over CMB data alone.
D. Eisenstein, Wayne Hu, Max Tegmark
semanticscholar   +1 more source

Thermal Phase‐Modulation of Thickness‐Dependent CVD‐Grown 2D In2Se3

open access: yesAdvanced Functional Materials, EarlyView.
A comprehensive study of CVD‐grown 2D In2Se3 reveals a distinct thickness‐dependent phase landscape and a reversible, thermally driven transformation between β″ and β* variants. In situ TEM electron diffraction and Raman spectroscopy reveal structural dynamics, while the structural invariance of the α‐phase in ultrathin regimes highlights its stability—
Dasun P. W. Guruge   +6 more
wiley   +1 more source

Mock 2dF and SDSS galaxy redshift surveys [PDF]

open access: yes, 1998
We present a comprehensive set of mock 2dF and SDSS galaxy redshift surveys constructed from a set of large, high-resolution cosmological N-body simulations.
S. Cole   +3 more
semanticscholar   +1 more source

Photoluminescent UV Light Modulation via Anisometric Carbon Nanodots for UV–Visible Shutter and UV Sensor

open access: yesAdvanced Functional Materials, EarlyView.
Anisometric carbon nanodots are synthesized directly from a liquid crystal precursor and embedded into polymer network liquid crystals to create soft, multifunctional photonic films. These hybrid devices exhibit polarized photoluminescence, broad UV absorption, and fast, electrically tunable light modulation.
Mangesh D. Patekari   +4 more
wiley   +1 more source

WiggleZ Dark Energy Survey: Cosmological neutrino mass constraint from blue high-redshift galaxies [PDF]

open access: yes, 2012
The absolute neutrino mass scale is currently unknown, but can be constrained by cosmology. The WiggleZ high redshift, star-forming, and blue galaxy sample offers a complementary data set to previous surveys for performing these measurements, with ...
Forster, Karl   +3 more
core  

Cosmological redshift distortion: deceleration, bias and density parameters from future redshift surveys of galaxies [PDF]

open access: yes, 1997
The observed two-point correlation functions of galaxies in redshift space become anisotropic due to the geometry of the universe as well as due to the presence of the peculiar velocity field.
Ballinger W. E.   +6 more
core   +4 more sources

Three-dimensional Identification and Reconstruction of Galaxy Systems within Flux-limited Redshift Surveys [PDF]

open access: yes, 2001
We have developed a new geometrical method for identifying and reconstructing a homogeneous and highly complete set of galaxy groups within flux-limited redshift surveys.
C. Marinoni   +3 more
semanticscholar   +1 more source

Ultrabroadband Chiral Emission from Cu Nanocluster Eggshell Membrane/CsPbBr3 QD Composites with a Cholesteric Superstructures

open access: yesAdvanced Functional Materials, EarlyView.
This study presents a novel wide‐bandwidth circularly polarized luminescence (CPL) system combining Cu nanoclusters, perovskite quantum dots, and cholesteric liquid crystals. The design achieves strong CPL emission across 480–750 nm (glum up to 1.31 at 514 nm and 1.46 at 620 nm). Using biomaterials and a simple structure, it offers a promising strategy
Tan‐De Liu   +6 more
wiley   +1 more source

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