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Intrinsic alignments of group and cluster galaxies in photometric surveys
Nora Elisa Chisari, Rachel Mandelbaum, Michael A. Strauss +2
Intrinsic alignments of galaxies have been shown to contaminate weak gravitational lensing observables on linear scales, 10 Mpc, but studies of alignments in the non-l…
Brightest Cluster Galaxies at the Present Epoch
Tod R. Lauer, Marc Postman, Michael A. Strauss +2
We have observed 433 z<=0.08 brightest cluster galaxies (BCGs) in a full-sky survey of Abell clusters. The BCG Hubble diagram is consistent to within 2% of a Omega_m=0.3, Lambda=0.…
Can weak lensing surveys confirm BICEP2 ?
Nora Elisa Chisari, Cora Dvorkin, Fabian Schmidt
The detection of B-modes in the Cosmic Microwave Background (CMB) polarization by the BICEP2 experiment, if interpreted as evidence for a primordial gravitational wave background,…