Galactic angular momenta and angular momentum couplings in the large-scale structure

摘要: In this paper, we revisit the acquisition of angular momentum galaxies by tidal shearing and compute variance as well correlation function CL(r), using torquing in Zel’dovich approximation model for build-up. Under assumption that haloes form at peaks density field determine protohalo’s inertia from peak shape embed it a field. Inertia shear are drawn random process sampling Gaussian distribution which shows correct covariances between all relevant quantities. We describe way correlations result an interplay long-ranged short-ranged Our description takes care relative orientation eigensystems these two symmetric tensors. propose new is able to distinguish parallel antiparallel alignment vectors, comment on implications intrinsic alignments weak lensing measurements. confirm scaling L/M ∝ M2/3 find Milky Way sized be correlated scales ∼1 Mpc h−1. The can fitted empirical relation CL(r) ∝ exp(−[r/r0]β).