3 papers
astro-ph.CO2018
Dark Energy Survey Year 1 Results: Methods for Cluster Cosmology and Application to the SDSS
M. Costanzi, E. Rozo, M. Simet +83
We perform the first blind analysis of cluster abundance data. Specifically, we derive cosmological constraints from the abundance and weak-lensing signal of \redmapper\ clusters o…
astro-ph.CO2018
The Cluster Survey: joint modelling of the scaling relation for clusters and groups of galaxies
Leyla Ebrahimpour, Pedro T. P. Viana, Maria Manolopoulou +16
We characterize the X-ray luminosity--temperature () relation using a sample of 353 clusters and groups of galaxies with temperatures in excess of 1 keV, spanning the…
astro-ph.GA2018
Correlations between X-ray properties and Black Hole Mass in AGN: towards a new method to estimate black hole mass from short exposure X-ray observations
Julian A. Mayers, Kathy Romer, Arya Fahari +14
Several investigations of the X-ray variability of active galactic nuclei (AGN) using the normalised excess variance () parameter have shown that variability has a…