Results 111 to 120 of about 295,900 (371)
Gravitational redshift and asymmetric redshift-space distortions for stacked clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 We derive the expression for the observed redshift in the weak field limit in the observer's past light cone, including all relativistic terms up to second order in velocity. We then apply it to compute the cluster-galaxy cross-correlation functions (CGCF) using N-body simulations.
Shaun Cole +4 more
openaire +5 more sources
Advanced Functional Materials, EarlyView.Ozone‐based gas‐phase metal‐assisted chemical etching enables unprecedented room‐temperature fabrication of high‐quality silicon nanowires. The superior oxidation potential of O3 drives rapid vertical etching (1 µm min−1) while maintaining exceptional structural integrity. The pristine nanowire surfaces enable high‐performance core‐shell photodetectors
Hyein Cho +11 more
wiley +1 more source
Forward Modeling of Galaxy Populations for Cosmological Redshift Distribution Inference
The Astrophysical Journal Supplement Series, 2023 We present a forward-modeling framework for estimating galaxy redshift distributions from photometric surveys. Our forward model is composed of: a detailed population model describing the intrinsic distribution of the physical characteristics of galaxies,
Justin Alsing +4 more
doaj +1 more source
Redshifted 21 Centimeter Signatures around the Highest Redshift Quasars [PDF]
The Astrophysical Journal, 2004 11 pages, 6 figures.
Wyithe, J. Stuart B., Loeb, Abraham
openaire +5 more sources
The unrelaxed dynamical structure of the galaxy cluster Abell 85 [PDF]
, 2016 For the first time, we explore the dynamics of the central region of a galaxy cluster within $r_{500}\sim 600h^{-1}$~kpc from its center by combining optical and X-ray spectroscopy.
Aguerri, Jose Alfonso Lopez +4 more
core +3 more sources
The SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations at Redshift of 0.72 with the DR14 Luminous Red Galaxy Sample [PDF]
Astrophysical Journal, 2017 The extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 14 sample includes 80,118 luminous red galaxies (LRGs). By combining these galaxies with the high-redshift tail of the BOSS galaxy sample, we form a sample of LRGs at an effective ...
J. Bautista +18 more
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.This study demonstrates the stability and Raman signal enhancement effects of Au@h‐BN nanoparticles in an alkaline electrolyte on. A comparison between conventional SiO2 and h‐BN shells reveals that the h‐BN core‐shell structure provides superior stability and enhanced Raman intensity over multiple cyclic voltammetry cycles.
Jee Hyeon Kim +5 more
wiley +1 more source
1.4-GHz Luminosity Function of Galaxies from the Las Campanas Redshift Survey
, 1998 A preliminary 1.4 GHz RLF at redshift of about 0.14 is derived from the Las Campanas Redshift Survey (LCRS) and the NVSS radio data. No significant evolution has been found at this redshift in comparison to the 'local' RLF.Comment: 2 pages including 2 ...
Godlowski, W., Machalski, J.
core +1 more source
ANNz: estimating photometric redshifts using artificial neural networks [PDF]
, 2004 We introduce ANNz, a freely available software package for photometric redshift estimation using Artificial Neural Networks. ANNz learns the relation between photometry and redshift from an appropriate training set of galaxies for which the redshift is ...
Adrian A. Collister +4 more
core +3 more sources
Photometric Redshifts of Quasars
The Astronomical Journal, 2001 We demonstrate that the design of the Sloan Digital Sky Survey (SDSS) filter system and the quality of the SDSS imaging data are sufficient for determining accurate and precise photometric redshifts (``photo-z''s) of quasars. Using a sample of 2625 quasars, we show that photo-z determination is even possible for z<=2.2 despite the lack of a strong ...
Tamás Budavári +39 more
openaire +3 more sources