| タイトル | Topology of large-scale structure in seeded hot dark matter models |
| 著者（英） | Scherrer, Robert J.; Beaky, Matthew M.; Villumsen, Jens V. |
| 著者所属（英） | NASA Headquarters |
| 発行日 | 1992-03-10 |
| 言語 | eng |
| 内容記述 | The topology of the isodensity surfaces in seeded hot dark matter models, in which static seed masses provide the density perturbations in a universe dominated by massive neutrinos is examined. When smoothed with a Gaussian window, the linear initial conditions in these models show no trace of non-Gaussian behavior for r0 equal to or greater than 5 Mpc (h = 1/2), except for very low seed densities, which show a shift toward isolated peaks. An approximate analytic expression is given for the genus curve expected in linear density fields from randomly distributed seed masses. The evolved models have a Gaussian topology for r0 = 10 Mpc, but show a shift toward a cellular topology with r0 = 5 Mpc; Gaussian models with an identical power spectrum show the same behavior. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 92A27303 |
| 権利 | Copyright |
|
