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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…
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…
X-ray Temperatures, Luminosities, and Masses From XMM-Newton Follow-up of the First Shear-selected Galaxy Cluster Sample
Amruta J. Deshpande, John P. Hughes, David Wittman
We continue the study of the first sample of shear-selected clusters (Wittman et al. 2006) from the initial 8.6 square degrees of the Deep Lens Survey (DLS, Wittman et al. 2002); a…
Offsets between member galaxies and dark matter in clusters: a test with the Illustris simulation
Karen Y. Ng, Annalisa Pillepich, David Wittman +3
Dark matter with a non-zero self-interacting cross section () has been posited as a solution to a number of outstanding astrophysical mysteries. Many studies of mergi…
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…