623 citations · 11.8k across the 149 of their papers we have counts for
9 papers · 2 filters
The nature of the ghost cavity in the NGC 741 group
Nazirah N. Jetha, Martin J. Hardcastle, Arif Babul +4
We discuss the effects of energy injection into the intra-group medium of the group of galaxies associated with NGC 741. The X-ray emission reveals a large bubble, which in the abs…
Evidence for Non-Hydrostatic Gas from the Cluster X-ray to Lensing Mass Ratio
A. Mahdavi, H. Hoekstra, A. Babul +1
Using a uniform analysis procedure, we measure spatially resolved weak gravitational lensing and hydrostatic X-ray masses for a sample of 18 clusters of galaxies. We find a radial…
Investigating the Relationship Between the Hot Gas and the Dark Matter Components of Galaxy Clusters
Leila C. Powell, Scott T. Kay, Arif Babul +1
Various differences in galaxy cluster properties derived from X-ray and weak lensing observations have been highlighted in the literature. One such difference is the observation of…
A Dark Core in Abell 520
A. Mahdavi, H. Hoekstra, A. Babul +2
The rich cluster Abell 520 (z=0.201) exhibits truly extreme and puzzling multi-wavelength characteristics. It may best be described as a "cosmic train wreck." It is a major merger…
Towards a Holistic View of the Heating and Cooling of the Intracluster Medium
Ian G. McCarthy, Arif Babul, Richard G. Bower +1
(Abridged) X-ray clusters are conventionally divided into two classes: "cool core" (CC) clusters and "non-cool core" (NCC) clusters. Yet relatively little attention has been given…
Joint Analysis of Cluster Observations: I. Mass Profile of Abell 478 from Combined X-ray, Sunyaev-Z'eldovich, and Weak Lensing Data
A. Mahdavi, H. Hoekstra, A. Babul +3
We provide a new framework for the joint analysis of cluster observations (JACO) using simultaneous fits to X-ray, Sunyaev-Zel'dovich (SZ), and weak lensing data. Our method fits t…
The Sunyaev-Zeldovich Background
Gilbert Holder, Ian G. McCarthy, Arif Babul
The cosmic background due to the Sunyaev-Zeldovich (SZ) effect is expected to be the largest signal at mm and cm wavelengths at a resolution of a few arcminutes. We investigate som…
The impact of mergers on relaxed X-ray clusters - II. Effects on global X-ray and SZ properties and their scaling relations
Gregory B. Poole, Arif Babul, Ian G. McCarthy +4
We use the suite of simulations presented in Poole et al (2006) to examine global X-ray and Sunyaev-Zel'dovich (SZ) observables for systems of merging relaxed X-ray clusters. In al…
Modelling Shock Heating in Cluster Mergers: I. Moving Beyond the Spherical Accretion Model
Ian G. McCarthy, Richard G. Bower, Michael L. Balogh +6
(Abridged) The thermal history of the intracluster medium (ICM) is complex. Heat input from cluster mergers, AGN, and galaxy winds offsets and may even halt the cooling of the ICM.…