203 citations · 1.1k across the 15 of their papers we have counts for
15 papers
Merging Cluster Collaboration: A Panchromatic Atlas of Radio Relic Mergers
Nathan Golovich, William A. Dawson, David M. Wittman +13
Golovich et al. 2017b presents an optical imaging and spectroscopic survey of 29 radio relic merging galaxy clusters. In this paper, we study this survey to identify substructure a…
On the absence of radio halos in clusters with double relics
A. Bonafede, R. Cassano, M. Brüggen +10
Pairs of radio relics are believed to form during cluster mergers, and are best observed when the merger occurs in the plane of the sky. Mergers can also produce radio halos, throu…
The Case for Electron Re-Acceleration at Galaxy Cluster Shocks
Reinout J. van Weeren, Felipe Andrade-Santos, William A. Dawson +16
On the largest scales, the Universe consists of voids and filaments making up the cosmic web. Galaxy clusters are located at the knots in this web, at the intersection of filaments…
MC: Dynamical Analysis of the Merging Galaxy Cluster MACS J1149.5+2223
Nathan Golovich, William A. Dawson, David Wittman +3
We present an analysis of the merging cluster MACS J1149.5+2223 using archival imaging from Subaru/Suprime-Cam and multi-object spectroscopy from Keck/DEIMOS and Gemini/GMOS. We em…
Frontier Fields Clusters: Deep Chandra Observations of the Complex Merger MACS J1149.6+2223
G. A. Ogrean, R. J. van Weeren, C. Jones +24
The HST Frontier Fields cluster MACS J1149.6+2223 is one of the most complex merging clusters, believed to consist of four dark matter halos. We present results from deep (365 ks)…
LOFAR, VLA, and Chandra observations of the Toothbrush galaxy cluster
R. J. van Weeren, G. Brunetti, M. Brüggen +39
We present deep LOFAR observations between 120-181 MHz of the "Toothbrush" (RX J0603.3+4214), a cluster that contains one of the brightest radio relic sources known. Our LOFAR obse…
The discovery of lensed radio and X-ray sources behind the Frontier Fields cluster MACS J0717.5+3745 with the JVLA and Chandra
R. J. van Weeren, G. A. Ogrean, C. Jones +24
We report on high-resolution JVLA and Chandra observations of the HST Frontier Cluster MACS J0717.5+3745. MACS J0717.5+3745 offers the largest contiguous magnified area of any know…
A giant radio halo in the cool core cluster CL1821+643
A. Bonafede, H. T. Intema, M. Brüggen +8
Giant radio halos are Mpc-size sources found in some merging galaxy clusters. The synchrotron emitting electrons are thought to be (re)accelerated by plasma turbulence induced by t…
Multiple density discontinuities in the merging galaxy cluster CIZA J2242.8+5301
G. A. Ogrean, M. Brüggen, R. J. van Weeren +4
CIZA J2242.8+5301, a merging galaxy cluster at z=0.19, hosts a double-relic system and a faint radio halo. Radio observations at frequencies ranging from a few MHz to several GHz h…
Measurements and simulation of Faraday rotation across the Coma radio relic
A. Bonafede, F. Vazza, M. Brüggen +5
The aim of this work is to probe the magnetic field properties in relics and infall regions of galaxy clusters using Faraday Rotation Measures. We present Very Large Array multi-fr…
Challenges to our understanding of radio relics: X-ray observations of the Toothbrush cluster
G. A. Ogrean, M. Brüggen, R. J. van Weeren +3
The cluster 1RXS J0603.3+4214 is a merging galaxy cluster that hosts three radio relics and a giant radio halo. The northern relic, the Toothbrush, is 1.9-Mpc long and has an unusu…
First X-ray evidence for a shock at the Coma relic
G. A. Ogrean, M. Brüggen
The Coma cluster is one of the nearest galaxy clusters, and the first one in which a radio halo and a peripheral relic were discovered. While its halo and the central parts of the…
XMM-Newton observations of the merging galaxy cluster CIZA J2242.8+5301
Georgiana Ogrean, Marcus Brüggen, Huub Röttgering +4
We studied the intracluster medium of the galaxy cluster CIZA J2242.8+5301 using deep XMM-Newton observations. The cluster hosts a remarkable 2-Mpc long, ~50-kpc wide radio relic t…
Evidence for a merger-revived radio phoenix in MaxBCG J217.95869+13.53470
G. A. Ogrean, M. Brueggen, R. van Weeren +3
We use XMM-Newton observations of the galaxy cluster MaxBCG J217.95869+13.53470 to analyze its physical properties and dynamical state. MaxBCG J217.95869+13.53470 is found at a red…
Central galaxy growth and feedback in the most massive nearby cool core cluster
G. A. Ogrean, N. A. Hatch, A. Simionescu +4
We present multi-wavelength observations of the centre of RXCJ1504.1-0248 - the galaxy cluster with the most luminous and relatively nearby cool core at z~0.2. Although there are s…