dc.creator | Doughty, Caitlin C. | es |
dc.creator | Hennawi, Joseph F. | es |
dc.creator | Davies, Frederick B. | es |
dc.creator | Lukić, Zarija | es |
dc.creator | Oñorbe Bernis, José | es |
dc.date.accessioned | 2024-05-15T17:54:02Z | |
dc.date.available | 2024-05-15T17:54:02Z | |
dc.date.issued | 2023 | |
dc.identifier.citation | Doughty, C.C., Hennawi, J.F., Davies, F.B., Lukić, Z. y Oñorbe Bernis, J. (2023). Convergence of Small Scale Ly α Structure at High-z under Different Reionization Scenarios. Monthly Notices of the Royal Astronomical Society, 525 (3), 3790-3805. https://doi.org/10.1093/mnras/stad2549. | |
dc.identifier.issn | 0035-8711 | es |
dc.identifier.issn | 1365-2966 | es |
dc.identifier.uri | https://hdl.handle.net/11441/158415 | |
dc.description.abstract | The Ly α forest (LAF) at z > 5 probes the thermal and reionization history of the intergalactic medium (IGM) and the nature of dark matter, but its interpretation requires comparison to cosmological hydrodynamical simulations. At high-z, convergence of these simulations is more exacting since transmission is dominated by underdense voids that are challenging to resolve. With evidence mounting for a late end to reionization, small structures down to the sub-kpc level may survive to later times than conventionally thought due to the reduced time for pressure smoothing to impact the gas, further tightening simulation resolution requirements. We perform a suite of simulations using the Eulerian cosmological hydrodynamics code Nyx, spanning domain sizes of 1.25 - 10 h-1 Mpc and 5 - 80 h-1 kpc cells, and explore the interaction of these variables with the timing of reionization on the properties of the matter distribution and the simulated LAF at z = 5.5. In observable Ly α power, convergence within 10 per cent is achieved for k < 0.1 s km-1, but larger k shows deviation of up to 20 per cent. While a later reionization retains more small structure in the density field, because of the greater thermal broadening there is little difference in the convergence of LAF power between early (z = 9) and later (z = 6) reionizations. We conclude that at z ∼5.5, resolutions of 10 kpc are necessary for convergence of LAF power at k < 0.1 s km-1, while higher-k modes require higher resolution, and that the timing of reionization does not significantly impact convergence given realistic photoheating. | es |
dc.description.sponsorship | Department of Energy DE-AC02-05CH11231,17-SC-20-SC | es |
dc.description.sponsorship | Ministerio de Ciencia Y Tecnología CNS2022-135878, BEAGAL18/00057 | es |
dc.format | application/pdf | es |
dc.format.extent | 16 p. | es |
dc.language.iso | eng | es |
dc.publisher | Oxford University Press | es |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society, 525 (3), 3790-3805. | |
dc.rights | Atribución 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
dc.subject | Dark ages, reionization, first stars | es |
dc.subject | Intergalactic medium | es |
dc.subject | Methods: numerical | es |
dc.subject | Quasars | es |
dc.title | Convergence of Small Scale Ly α Structure at High-z under Different Reionization Scenarios | es |
dc.type | info:eu-repo/semantics/article | es |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear | es |
dc.relation.projectID | DE-AC02-05CH11231 | es |
dc.relation.projectID | 17-SC-20-SC | es |
dc.relation.projectID | CNS2022-135878 | es |
dc.relation.projectID | BEAGAL18/00057 | es |
dc.relation.publisherversion | https://doi.org/10.1093/mnras/stad2549 | es |
dc.identifier.doi | 10.1093/mnras/stad2549 | es |
dc.journaltitle | Monthly Notices of the Royal Astronomical Society | es |
dc.publication.volumen | 525 | es |
dc.publication.issue | 3 | es |
dc.publication.initialPage | 3790 | es |
dc.publication.endPage | 3805 | es |
dc.contributor.funder | Department of Energy. United States | es |
dc.contributor.funder | Ministerio de Ciencia Y Tecnología (MCYT). España | es |