465 citations · 2.6k across the 40 of their papers we have counts for
13 papers · 1 filter
Exploiting Low-Dimensional Structure in Astronomical Spectra
Joseph W. Richards, Peter E. Freeman, Ann B. Lee +1
Dimension-reduction techniques can greatly improve statistical inference in astronomy. A standard approach is to use Principal Components Analysis (PCA). In this work we apply a re…
Inference for the dark energy equation of state using Type IA supernova data
Christopher Genovese, Peter Freeman, Larry Wasserman +2
The surprising discovery of an accelerating universe led cosmologists to posit the existence of "dark energy"--a mysterious energy field that permeates the universe. Understanding…
The XMM Cluster Survey: Forecasting cosmological and cluster scaling-relation parameter constraints
Martin Sahlén, Pedro T. P. Viana, Andrew R. Liddle +16
We forecast the constraints on the values of sigma_8, Omega_m, and cluster scaling relation parameters which we expect to obtain from the XMM Cluster Survey (XCS). We assume a flat…
Massive Science with VO and Grids
Robert Nichol, Garry Smith, Christopher Miller +7
There is a growing need for massive computational resources for the analysis of new astronomical datasets. To tackle this problem, we present here our first steps towards marrying…
Examining the Effect of the Map-Making Algorithm on Observed Power Asymmetry in WMAP Data
P. E. Freeman, C. R. Genovese, C. J. Miller +2
We analyze first-year data of WMAP to determine the significance of asymmetry in summed power between arbitrarily defined opposite hemispheres, using maps that we create ourselves…
Chandra Observations of MBM12 and Models of the Local Bubble
R. K. Smith, R. J. Edgar, P. P. Plucinsky +3
Chandra observations toward the nearby molecular cloud MBM12 show unexpectedly strong and nearly equal foreground O VIII and O VII emission. As the observed portion of MBM12 is opt…