Table · dataset · 2011
The Cosmogrid Simulation: Statistical Properties of Small Dark Matter Halos (2048-592)
Listed in SURF Data Repository
We present the results of the "Cosmogrid" cosmological N-body simulation suites based on the concordance LCDM model.
Description
The Cosmogrid simulation was performed in a 30 Mpc box with 2048³ particles. The mass of each particle is 1.28x10^5 Msun, which is sufficient to resolve ultra-faint dwarfs.
We found that the halo mass function shows good agreement with the Sheth & Tormen fitting function down to ~10^7 Msun. We have analyzed the spherically averaged density profiles of the three most massive halos which are of galaxy group size and contain at least 170 million particles. The slopes of these density profiles become shallower than -1 at the inner most radius.
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We also find a clear correlation of halo concentration with mass. The mass dependence of the concentration parameter cannot be expressed by a single power law, however a simple model based on the Press-Schechter theory proposed by Navarro et al. gives reasonable agreement with this dependence. The spin parameter does not show a correlation with the halo mass.
The probability distribution functions for both concentration and spin are well fitted by the log-normal distribution for halos with the masses larger than ~10^8 Msun. The subhalo abundance depends on the halo mass. Galaxy-sized halos have 50% more subhalos than ~10^11 Msun halos have.
This is snapshot 592 of the 2048³ resolution collection.
Links
Where it is published
- SURF Data Repository record repository.surf.nl/records/w7mqx-2vb10 ↗
landing page · from repository surf nl
- DOI doi.org/10.25606/surf.578c6039-b972830c ↗
DOI / persistent id · from repository surf nl
Catalogue records · 1
- InvenioRDM API repository.surf.nl/api/records/w7mqx-2vb10 ↗
metadata API · from repository surf nl
Topics
- Stated by source
- astrophysics · cosmology · nongalactic astrophysics · simulation
- From keywords
- Astronomy & Astrophysics · Engineering · Humanities · Life Sciences · Simulation · Social Science
- Inferred from text
- Astronomical sciences 74%
Provenance · 1 source records, 17 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| SURF Data Repository | w7mqx-2vb10 | 7 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · repository surf nl | connector:repository_surf_nl@1.0.0 | |
| concepts[field].anzsrc:group:5101 | enrichment · repository surf nl | taxonomy-embedding@1.0.0 | title+keywords+description (74%) |
| concepts[field].local:field:astronomy | mapping · repository surf nl | connector:repository_surf_nl@1.0.0 | |
| concepts[field].local:field:engineering | mapping · repository surf nl | connector:repository_surf_nl@1.0.0 | |
| concepts[field].local:field:humanities | mapping · repository surf nl | connector:repository_surf_nl@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · repository surf nl | connector:repository_surf_nl@1.0.0 | |
| concepts[field].local:field:social-science | mapping · repository surf nl | connector:repository_surf_nl@1.0.0 | |
| concepts[method].local:method:simulation | mapping · repository surf nl | vocabulary-mapper@1.0.0 | keywords['simulation'] |
| concepts[topic].invenio_subject:repository_surf_nl:astrophysics | source · repository surf nl | connector:repository_surf_nl@1.0.0 | |
| concepts[topic].invenio_subject:repository_surf_nl:cosmology | source · repository surf nl | connector:repository_surf_nl@1.0.0 | |
| concepts[topic].invenio_subject:repository_surf_nl:nongalactic-astrophysics | source · repository surf nl | connector:repository_surf_nl@1.0.0 | |
| concepts[topic].invenio_subject:repository_surf_nl:simulation | source · repository surf nl | connector:repository_surf_nl@1.0.0 | |
| description | source · repository surf nl | connector:repository_surf_nl@1.0.0 | /metadata/description |
| license | source · repository surf nl | connector:repository_surf_nl@1.0.0 | |
| publication_date | source · repository surf nl | connector:repository_surf_nl@1.0.0 | |
| title | source · repository surf nl | connector:repository_surf_nl@1.0.0 | /metadata/title |
| updated_date | source · repository surf nl | connector:repository_surf_nl@1.0.0 |