Results 141 to 150 of about 295,900 (371)

Redshift in Finsler spacetimes [PDF]

open access: yesPhysical Review D, 2019
We derive and discuss a general redshift formula in Finsler spacetimes. The condition for the existence of a redshift potential is worked out. The results are illustrated with two examples, one refering to a spherically symmetric and static Finsler spacetime and the other to a cosmological Finsler spacetime.
Wolfgang Hasse, Volker Perlick
openaire   +3 more sources

Oligohistidine‐Functionalized Single‐Walled Carbon Nanotube‐Guided RNA Delivery to Improve Shoot Regeneration Efficiency in Plant Calli

open access: yesAdvanced Functional Materials, EarlyView.
The pH‐sensitive His6‐SWNTs, which is functionalized with oligohistidine, can deliver STTM396 molecules into callus cells. The STTM396–SWNT complex treatments enhance shoot regeneration efficiency by regulating the miR396‐GRF module in Arabidopsis and tomato calli.
Yeong Yeop Jeong   +7 more
wiley   +1 more source

The MUSE Hubble Ultra Deep Field Survey: II. Spectroscopic redshifts and comparisons to color selections of high-redshift galaxies [PDF]

open access: yes, 2017
We have conducted a two-layered spectroscopic survey (1′ × 1′ ultra deep and 3′ × 3′ deep regions) in the Hubble Ultra Deep Field (HUDF) with the Multi Unit Spectroscopic Explorer (MUSE).
H. Inami   +30 more
semanticscholar   +1 more source

On redshift measurements

open access: yes, 2020
Can redshift errors bias our measurement of the Hubble constant? This talk outlines some common errors in redshift measurements, in particular some common theoretical errors that should be avoided, and assesses how such errors can impact cosmological parameter inferences.
openaire   +3 more sources

Colloidal Opaline Composites as Throughput‐Scalable, Fully Transparent, and Color‐Tunable Radiative Cooling Exterior Films for Outdoor Photovoltaics

open access: yesAdvanced Functional Materials, EarlyView.
Particular thermal metamaterials are widely used as daytime radiative coolers merely by embedding thermally emissive nanoparticles (NPs) in liquid resins to form scalable, yet highly efficient cooling films in a cost‐effective way. However, randomly dispersed NPs, prevalently used thus far, cause strong scattering, limiting NP content and cooling ...
YongDeok Cho   +10 more
wiley   +1 more source

On the Number of Galaxies at High Redshift

open access: yesGalaxies, 2015
The number of galaxies at a given flux as a function of the redshift, z, is derived when the z-distance relation is non-standard. In order to compare different models, the same formalism is also applied to the standard cosmology.
Lorenzo Zaninetti
doaj   +1 more source

The Complete Calibration of the Color–Redshift Relation (C3R2) Survey: Survey Overview and Data Release 1 [PDF]

open access: yes, 2017
A key goal of the Stage IV dark energy experiments Euclid, LSST, and WFIRST is to measure the growth of structure with cosmic time from weak lensing analysis over large regions of the sky. Weak lensing cosmology will be challenging: in addition to highly
D. Masters   +6 more
semanticscholar   +1 more source

Galaxies at High Redshift [PDF]

open access: yesAstrophysics and Space Science, 1999
Within just the last few years, we have advanced from knowing only a few galaxies at z>2 to having redshifts for nearly 1000 z~2-5 objects. The majority of this sample has been detected through the photometric ``drop-out'' technique used so successfully by Steidel and his collaborators. In addition, a handful of objects have already been detected at
openaire   +3 more sources

Tailored Reconstruction of Polycrystalline CuO Nanorods Promotes C─C Coupling in CO2 Electroreduction

open access: yesAdvanced Functional Materials, EarlyView.
Controlling the polycrystallinity of CuO nanorods enables directional reconstruction into rod‐like structures that stabilize Cu(OH)2 and increase Cu+ ratios, while modulating interfacial water dynamics to enhance C─C coupling and boost C2+ product formation in CO2 electroreduction.
Hyeon‐Seok Bang   +15 more
wiley   +1 more source

High-redshift AGN in the Chandra Deep Fields : The obscured fraction and space density of the sub-L * population [PDF]

open access: yes, 2017
We investigate the population of high-redshift (3≤z 23 is ~0.6-0.8, once incompleteness effects are taken into account, with no strong dependence on redshift or luminosity. We derived the high-redshift AGN number counts down to F0.5-2 keV = 7 × 10-18 erg
F. Vito   +19 more
semanticscholar   +1 more source

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