Catalogues of voids as antihaloes in the local Universe
A recently proposed algorithm identifies voids in simulations as the regions associated with haloes when the initial overdensity field is negated. We apply this method to the real Universe by running a suite of constrained simulations of the 2M++ volume with initial conditions inferred by the BORG a...
| Autori principali: | , , , |
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| Natura: | Journal article |
| Lingua: | English |
| Pubblicazione: |
Oxford University Press
2022
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| _version_ | 1826308145158291456 |
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| author | Desmond, H Hutt, ML Devriendt, J Slyz, A |
| author_facet | Desmond, H Hutt, ML Devriendt, J Slyz, A |
| author_sort | Desmond, H |
| collection | OXFORD |
| description | A recently proposed algorithm identifies voids in simulations as the regions associated with haloes when the initial overdensity field is negated. We apply this method to the real Universe by running a suite of constrained simulations of the 2M++ volume with initial conditions inferred by the BORG algorithm, along with the corresponding inverted set. Our 101 inverted and uninverted simulations, spanning the BORG posterior, each identify ∼150 000 ‘voids as antihaloes’ with mass exceeding 4.38 × 1011 M⊙ (100 particles) at z = 0 in a full-sky sphere of radius 155 Mpc h−1 around the Milky Way. We calculate the size function, volume filling fraction, ellipticity, central density, specific angular momentum, clustering, and stacked density profile of the voids, and cross-correlate them with those produced by VIDE on the same simulations. We make our antihalo and VIDE catalogues publicly available. |
| first_indexed | 2024-03-07T07:15:08Z |
| format | Journal article |
| id | oxford-uuid:53b6f5c6-534c-49fb-ba31-06b1681e8b5d |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T07:15:08Z |
| publishDate | 2022 |
| publisher | Oxford University Press |
| record_format | dspace |
| spelling | oxford-uuid:53b6f5c6-534c-49fb-ba31-06b1681e8b5d2022-08-04T16:58:22ZCatalogues of voids as antihaloes in the local UniverseJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:53b6f5c6-534c-49fb-ba31-06b1681e8b5dEnglishSymplectic ElementsOxford University Press2022Desmond, HHutt, MLDevriendt, JSlyz, AA recently proposed algorithm identifies voids in simulations as the regions associated with haloes when the initial overdensity field is negated. We apply this method to the real Universe by running a suite of constrained simulations of the 2M++ volume with initial conditions inferred by the BORG algorithm, along with the corresponding inverted set. Our 101 inverted and uninverted simulations, spanning the BORG posterior, each identify ∼150 000 ‘voids as antihaloes’ with mass exceeding 4.38 × 1011 M⊙ (100 particles) at z = 0 in a full-sky sphere of radius 155 Mpc h−1 around the Milky Way. We calculate the size function, volume filling fraction, ellipticity, central density, specific angular momentum, clustering, and stacked density profile of the voids, and cross-correlate them with those produced by VIDE on the same simulations. We make our antihalo and VIDE catalogues publicly available. |
| spellingShingle | Desmond, H Hutt, ML Devriendt, J Slyz, A Catalogues of voids as antihaloes in the local Universe |
| title | Catalogues of voids as antihaloes in the local Universe |
| title_full | Catalogues of voids as antihaloes in the local Universe |
| title_fullStr | Catalogues of voids as antihaloes in the local Universe |
| title_full_unstemmed | Catalogues of voids as antihaloes in the local Universe |
| title_short | Catalogues of voids as antihaloes in the local Universe |
| title_sort | catalogues of voids as antihaloes in the local universe |
| work_keys_str_mv | AT desmondh cataloguesofvoidsasantihaloesinthelocaluniverse AT huttml cataloguesofvoidsasantihaloesinthelocaluniverse AT devriendtj cataloguesofvoidsasantihaloesinthelocaluniverse AT slyza cataloguesofvoidsasantihaloesinthelocaluniverse |