Halo abundances and shear in void models
We study the non-linear gravitational collapse of dark matter into halos through numerical N-body simulations of Lemaître–Tolman–Bondi void models. We extend the halo mass function formalism to these models in a consistent way. This extension not only compares well with the simulated data at all tim...
| Główni autorzy: | , , , |
|---|---|
| Format: | Journal article |
| Wydane: |
Elsevier
2012
|
| _version_ | 1826275712670105600 |
|---|---|
| author | Alonso, D García-Bellido, J Haugbølle, T Knebe, A |
| author_facet | Alonso, D García-Bellido, J Haugbølle, T Knebe, A |
| author_sort | Alonso, D |
| collection | OXFORD |
| description | We study the non-linear gravitational collapse of dark matter into halos through numerical N-body simulations of Lemaître–Tolman–Bondi void models. We extend the halo mass function formalism to these models in a consistent way. This extension not only compares well with the simulated data at all times and radii, but it also gives interesting clues about the impact of the background shear on the growth of perturbations. Our results give hints about the possibility of constraining the background shear via cluster number counts, which could then give rise to strong constraints on general inhomogeneous models, of any scale. |
| first_indexed | 2024-03-06T23:02:57Z |
| format | Journal article |
| id | oxford-uuid:62cdfd9d-0390-4db2-aa94-5d9b09ed9fd2 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T23:02:57Z |
| publishDate | 2012 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:62cdfd9d-0390-4db2-aa94-5d9b09ed9fd22022-03-26T18:08:39ZHalo abundances and shear in void modelsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:62cdfd9d-0390-4db2-aa94-5d9b09ed9fd2Symplectic Elements at OxfordElsevier2012Alonso, DGarcía-Bellido, JHaugbølle, TKnebe, AWe study the non-linear gravitational collapse of dark matter into halos through numerical N-body simulations of Lemaître–Tolman–Bondi void models. We extend the halo mass function formalism to these models in a consistent way. This extension not only compares well with the simulated data at all times and radii, but it also gives interesting clues about the impact of the background shear on the growth of perturbations. Our results give hints about the possibility of constraining the background shear via cluster number counts, which could then give rise to strong constraints on general inhomogeneous models, of any scale. |
| spellingShingle | Alonso, D García-Bellido, J Haugbølle, T Knebe, A Halo abundances and shear in void models |
| title | Halo abundances and shear in void models |
| title_full | Halo abundances and shear in void models |
| title_fullStr | Halo abundances and shear in void models |
| title_full_unstemmed | Halo abundances and shear in void models |
| title_short | Halo abundances and shear in void models |
| title_sort | halo abundances and shear in void models |
| work_keys_str_mv | AT alonsod haloabundancesandshearinvoidmodels AT garciabellidoj haloabundancesandshearinvoidmodels AT haugbøllet haloabundancesandshearinvoidmodels AT knebea haloabundancesandshearinvoidmodels |