Results 51 to 60 of about 48,997 (217)
ARCRAIDER II: Arc search in a sample of non-Abell clusters [PDF]
, 2010 We present a search for gravitational arcs in a sample of X-ray luminous, medium redshift clusters of galaxies. The sample of clusters is called ARCRAIDER, is based on the ROSAT Bright Survey (RBS) and fulfills the following criteria: (a) X-ray ...
A. Schwope +44 more
core +1 more source
Clustering analysis of high-redshift luminous red galaxies in Stripe 82 [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 We present a clustering analysis of Luminous Red Galaxies in SDSS Stripe 82. We study the angular 2-point correlation function, of 130,000 LRG candidates via colour-cut selections in izK with the K band coverage coming from UKIDSS LAS. We have used the cross-correlation technique of Newman (2008) to establish the LRG redshift distribution.
Nikoloudakis, N. +2 more
openaire +3 more sources
Adsorption of Helium on Cationic or Anionic Tetracene and Pentacene
Small Structures, Volume 7, Issue 1, January 2026.How does the arrangement of helium atoms that are adsorbed on tetracene or pentacene ions change with increasing coverage? When does the adsorption layer change from 1D to 2D, and to 3D? Is the transition abrupt? Are the helium atoms localized? Is the arrangement the same for cations and anions? What changes as the acene grows in length?
Miriam Kappe +6 more
wiley +1 more source
The Astrophysical JournalGalaxy clusters are powerful laboratories for studying both cosmic structure formation and galaxy evolution. We present a comprehensive analysis of the velocity anisotropy profile, β ( r ), in galaxy clusters using the Uchuu-UniverseMachine mock galaxy ...
Mohamed H. Abdullah +6 more
doaj +1 more source
A critical analysis of high-redshift, massive, galaxy clusters. Part I [PDF]
Journal of Cosmology and Astroparticle Physics, 2012 20 pages, 6 figures, 2 tables, modified to match accepted version (JCAP); title changed, main analysis unchanged, additional ...
Ben Hoyle +3 more
openaire +3 more sources
ChemPhysChem, Volume 26, Issue 18, September 19, 2025.In bulk carbonic acid (e.g., in interstellar icy dust grains) cluster formation produces two distinct UV‐Vis spectral features redshifted by ≈2 eV (25 nm) and by ≈5 eV (80 nm) compared to gas phase single molecule carbonic acid 's adiabatic ionization energy. Theory and experiment were used to investigate the origin of these shifts.
Dennis F. Dinu +7 more
wiley +1 more source
A Closer Look at the Dynamical State of the High-redshift Galaxy Cluster SPT-CL J2215-3537
The Astrophysical JournalWe present a comprehensive reanalysis of the dynamical state of the high-redshift galaxy cluster SPT-CL J2215-3537 ( z = 1.16), using the full set of available Chandra observations to characterize the thermodynamic and morphological properties of the ...
Vinicius S. Bessa +2 more
doaj +1 more source
The mass-concentration relation in massive galaxy clusters at redshift ~1 [PDF]
, 2013 Mass and concentration of clusters of galaxies are related and evolving with redshift. We study the properties of a sample of 31 massive galaxy clusters at high redshift, 0.8 < z < 1.5, using weak and strong lensing observations. Concentration is a steep
Covone, Giovanni, Sereno, Mauro
core +1 more source
Two Micron‐Size Dark Dimensions
Fortschritte der Physik, Volume 73, Issue 8, August 2025.Abstract Two extra dimensions of micron scale might simultaneously address the gauge and cosmological hierarchy problems. In this paper various observational bounds in scenarios with one and two large extra dimensions are examined, to see if they are compatible with the micron scale.
Luis A. Anchordoqui +2 more
wiley +1 more source
The Astrophysical JournalStudies of galaxy protoclusters yield insights into galaxy cluster formation complementary to those obtained via “archaeological” studies of present-day galaxy clusters.
Pablo Araya-Araya +8 more
doaj +1 more source