Abstract Weak gravitational lensing measurements based on photometry are limited by shape noise: the variance in unknown unlensed orientations of source galaxies. If is a disk galaxy with well-ordered velocity field, however, field data can support simultaneous inference shear, inclination, and position angle, virtually eliminating noise. We use Fisher information matrix formalism to forecast p...

Abstract Direct Numerical Simulation data obtained earlier from two statistically 1D, planar, fully-developed, weakly turbulent, single-step-chemistry, premixed flames characterized by different (7.53 and 2.50) density ratios ? are analyzed to explore the influence of combustion-induced thermal expansion on turbulence backward such flow perturbations reaction zone. For this purpose, actual velo...

We present a numerical study of the relation between the cosmic peculiar velocity field and the gravitational acceleration field. We show that on mildly non-linear scales (4–10 hMpc Gaussian smoothing), the distribution of the Cartesian coordinates of each of these fields is well approximated by a Gaussian. In particular, their kurtoses and negentropies are small compared to those of the veloci...