203 citations · 1.1k across the 45 of their papers we have counts for
14 papers · 1 filter
Particle re-acceleration and Faraday-complex structures in the RXC J1314.4-2515 galaxy cluster
C. Stuardi, A. Bonafede, D. Wittor +9
Radio relics are sites of electron (re)acceleration in merging galaxy clusters but the mechanism of acceleration and the topology of the magnetic field in and near relics are yet t…
Primordial Black Hole Microlensing: The Einstein Crossing Time Distribution
Jessica R. Lu, Casey Y. Lam, Michael Medford +2
Gravitational microlensing is one of the few means of finding primordial black holes (PBHs), if they exist. Recent LIGO detections of 30 Msun black holes have re-invigorated the se…
Dark Matter Science in the Era of LSST
Keith Bechtol, Alex Drlica-Wagner, Kevork N. Abazajian +177
Astrophysical observations currently provide the only robust, empirical measurements of dark matter. In the coming decade, astrophysical observations will guide other experimental…
Probing the Fundamental Nature of Dark Matter with the Large Synoptic Survey Telescope
Alex Drlica-Wagner, Yao-Yuan Mao, Susmita Adhikari +97
Astrophysical and cosmological observations currently provide the only robust, empirical measurements of dark matter. Future observations with Large Synoptic Survey Telescope (LSST…
Multi-wavelength Analysis of the Merging Galaxy Cluster A115
Mincheol Kim, M. James Jee, Kyle Finner +4
A115 is a merging galaxy cluster at with a number of remarkable features including a giant ( Mpc) radio relic, two asymmetric X-ray peaks with trailing tails, a…
Brightest Cluster Galaxy Alignments in Merging Clusters
David Wittman, Drake Foote, Nathan Golovich
The orientations of brightest cluster galaxies (BCGs) and their host clusters tend to be aligned, but the mechanism driving this is not clear. To probe the role of cluster mergers…
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…
MC: Subaru and Hubble Space Telescope Weak-Lensing Analysis of the Double Radio Relic Galaxy Cluster PLCK G287.0+32.9
Kyle Finner, M. James Jee, Nathan Golovich +6
The second most significant detection of the Planck Sunyaev Zel'dovich survey, PLCK~G287.0+32.9 () boasts two similarly bright radio relics and a radio halo. One radio rel…
Merging Cluster Collaboration: Optical and Spectroscopic Survey of a Radio-Selected Sample of Twenty Nine Merging Galaxy Clusters
Nathan Golovich, William A. Dawson, David M. Wittman +11
Multi-band photometric and multi-object spectroscopic surveys of merging galaxy clusters allow for the characterization of the distributions of constituent dark matter and galaxy p…
MC^2: A deeper look at ZwCl 2341.1+0000 with Bayesian galaxy clustering and weak lensing analyses
Bryant Benson, David M. Wittman, Nathan Golovich +3
ZwCl 2341.1+0000, a merging galaxy cluster with disturbed X-ray morphology and widely separated (3 Mpc) double radio relics, was thought to be an extremely massive ($10-30 \t…
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 Mismeasure of Mergers: Revised Limits on Self-interacting Dark Matter in Merging Galaxy Clusters
David Wittman, Nathan Golovich, William A. Dawson
In an influential recent paper, Harvey et al (2015) derive an upper limit to the self-interaction cross section of dark matter ( cm/g at 95\% confidence) by…
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)…