Research news on Abell clusters

Abell clusters as a research area focus on the study of galaxy clusters originally cataloged by George O. Abell, emphasizing their statistical properties, spatial distribution, and role in large-scale structure and cosmology. Work in this field includes using Abell cluster samples to constrain cosmological parameters via cluster abundance, richness, and mass functions, investigating biasing and clustering through two-point correlation functions, and probing dark matter via X-ray emission, gravitational lensing, and galaxy dynamics. The research also addresses selection effects and completeness of the Abell catalog and its extensions, integrating multiwavelength observations with numerical simulations.

Hubble snaps galaxy cluster's portrait

A massive, spacetime-warping cluster of galaxies is the setting of today's NASA/ESA Hubble Space Telescope image. The galaxy cluster in question is Abell 209, located 2.8 billion light-years away in the constellation Cetus ...