Open AccessWarps and cosmic infall
Author(s) -
Jiang IngGuey,
Binney James
Publication year - 1999
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.1999.02333.x
Subject(s) - physics , halo , milky way , astrophysics , galaxy , galactic halo , dark matter , angular momentum , dark matter halo , astronomy , cosmic cancer database , galaxy formation and evolution , sign (mathematics) , classical mechanics , mathematical analysis , mathematics
N ‐body simulations show that when infall reorientates the outer parts of a galactic halo by several degrees per Gyr, a self‐gravitating disc that is embedded in the halo develops an integral‐sign warp that is comparable in amplitude to observed warps. Studies of angular‐momentum acquisition suggest that the required rate of halo reorientation is realistic for galaxies like the Milky Way.