Jeffrey Edmonds - Academia.edu (original) (raw)
Russia security and foreign policy expert. Senior Research Scientist at CNA. Former Director for Russia on the National Security Council. Lieutenant Colonel in the US Army Reserve.
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Papers by Jeffrey Edmonds
arXiv (Cornell University), Apr 20, 2009
Whitehall papers, Jan 2, 2019
We compute the two-point image correlation function for bright galaxies in the seventh data relea... more We compute the two-point image correlation function for bright galaxies in the seventh data release of the Sloan Digital Sky Survey (SDSS) over angular scales 0.01 arcmin to 120 arcmin and projected separations 0.01 Mpc to 10 Mpc. We restrict our analysis to SDSS galaxies with spectroscopic redshifts and we find strong evidence for intrinsic alignment of the galaxy images.
arXiv: Cosmology and Nongalactic Astrophysics, 2009
We compute the two-point image correlation function for bright galaxies in the seventh data relea... more We compute the two-point image correlation function for bright galaxies in the seventh data release of the Sloan Digital Sky Survey (SDSS) over angular scales 0.01' <= \theta <= 120' and projected separations 0.01 Mpc <= r <= 10 Mpc. We restrict our analysis to SDSS galaxies with accurate spectroscopic redshifts, and we find strong evidence for intrinsic alignment of the galaxy images. On scales greater than r ~ 40 kpc, the intrinsic alignment of the SDSS galaxy images compares well with the intrinsic alignment of galaxy images in a Lambda-CDM universe, provided we impose Gaussian-random errors on the position angles of the theoretical galaxies with a dispersion of 25 degrees. Without the inclusion of these errors, the amplitude of the two-point image correlation function for the theoretical galaxies is a factor of ~2 higher than it is for the SDSS galaxies. We interpret this as a combination of modest position angle errors for the SDSS galaxies, as well as a nee...
Religion, Brain & Behavior, 2013
arXiv (Cornell University), Apr 20, 2009
Whitehall papers, Jan 2, 2019
We compute the two-point image correlation function for bright galaxies in the seventh data relea... more We compute the two-point image correlation function for bright galaxies in the seventh data release of the Sloan Digital Sky Survey (SDSS) over angular scales 0.01 arcmin to 120 arcmin and projected separations 0.01 Mpc to 10 Mpc. We restrict our analysis to SDSS galaxies with spectroscopic redshifts and we find strong evidence for intrinsic alignment of the galaxy images.
arXiv: Cosmology and Nongalactic Astrophysics, 2009
We compute the two-point image correlation function for bright galaxies in the seventh data relea... more We compute the two-point image correlation function for bright galaxies in the seventh data release of the Sloan Digital Sky Survey (SDSS) over angular scales 0.01' <= \theta <= 120' and projected separations 0.01 Mpc <= r <= 10 Mpc. We restrict our analysis to SDSS galaxies with accurate spectroscopic redshifts, and we find strong evidence for intrinsic alignment of the galaxy images. On scales greater than r ~ 40 kpc, the intrinsic alignment of the SDSS galaxy images compares well with the intrinsic alignment of galaxy images in a Lambda-CDM universe, provided we impose Gaussian-random errors on the position angles of the theoretical galaxies with a dispersion of 25 degrees. Without the inclusion of these errors, the amplitude of the two-point image correlation function for the theoretical galaxies is a factor of ~2 higher than it is for the SDSS galaxies. We interpret this as a combination of modest position angle errors for the SDSS galaxies, as well as a nee...
Religion, Brain & Behavior, 2013