5.4k citations · 45.1k across the 133 of their papers we have counts for
10 papers · 1 filter
Estimating sparse precision matrices
Nikhil Padmanabhan, Martin White, Harrison H. Zhou +1
We apply a method recently introduced to the statistical literature to directly estimate the precision matrix from an ensemble of samples drawn from a corresponding Gaussian distri…
Hypercalibration: A Pan-STARRS1-based recalibration of the Sloan Digital Sky Survey
Douglas P. Finkbeiner, Edward F. Schlafly, David J. Schlegel +15
We present a recalibration of the Sloan Digital Sky Survey (SDSS) photometry with new flat fields and zero points derived from Pan-STARRS1 (PS1). Using PSF photometry of 60 million…
Combining galaxy and 21cm surveys
J. D. Cohn, Martin White, Tzu-Ching Chang +3
Acoustic waves traveling through the early Universe imprint a characteristic scale in the clustering of galaxies, QSOs and inter-galactic gas. This scale can be used as a standard…
SDSS-III Baryon Oscillation Spectroscopic Survey Data Release 12: galaxy target selection and large scale structure catalogues
Beth Reid, Shirley Ho, Nikhil Padmanabhan +39
The Baryon Oscillation Spectroscopic Survey (BOSS), part of the Sloan Digital Sky Survey (SDSS) III project, has provided the largest survey of galaxy redshifts available to date,…
Large Covariance Matrices: Smooth Models from the 2-Point Correlation Function
Ross O'Connell, Daniel Eisenstein, Mariana Vargas +2
We introduce a new method for estimating the covariance matrix for the galaxy correlation function in surveys of large-scale structure. Our method combines simple theoretical resul…
Efficient Construction of Mock Catalogs for Baryon Acoustic Oscillation Surveys
Tomomi Sunayama, Nikhil Padmanabhan, Katrin Heitmann +2
Precision measurements of the large scale structure of the Universe require large numbers of high fidelity mock catalogs to accurately assess, and account for, the presence of syst…