The alignment of dark matter halos with the cosmic web

Abstract

We investigate the orientation of the axes and angular momentum of dark matter halos with respect to their neighboring voids using high resolution N-body cosmological simulations. We find that the minor axis of halos tends to be aligned along the line joining the halo with the center of the void, and that the major axis is perpendicular to this line. However, we find that the angular momentum of halos does not have any particular orientation. These results may provide information about the mechanisms whereby the large-scale structure of the Universe affects galaxy formation and cast light upon the issue of the orientation of galaxy disks with respect to their host halos.

4 pages, 1 figure, accepted for publication in ApJ Letters

References in corpus (2)

• Potential sources of contamination to weak lensing measurements: constraints from N-body simulations
• The Influence of Large-Scale Structure on Halo Shapes and Alignments

Cited by in corpus (9)

• Properties of Dark Matter Haloes in Clusters, Filaments, Sheets and Voids
• Spin alignment of dark matter haloes in filaments and walls
• The Large-Scale Orientations of Disk Galaxies
• Angular momentum-Large-scale structure alignments in LCDM models and the SDSS
• The Alignments of the Galaxy Spins with the Real-Space Tidal Field Reconstructed from the Two Mass Redshift Survey
• The orientation of galaxy dark matter haloes around cosmic voids
• Spin alignment of dark matter haloes in the shells of the largest voids
• The Nonlinear Evolution of Galaxy Intrinsic Alignments
• Probing IGM large-scale flows: warps in galaxies at shells of voids