| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m21d.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34T/479BM3H | |||
| Repository | sid.inpe.br/mtc-m21d/2022/07.13.17.04 (restricted access) | |||
| Last Update | 2022:07.13.17.04.04 (UTC) simone | |||
| Metadata Repository | sid.inpe.br/mtc-m21d/2022/07.13.17.04.04 | |||
| Metadata Last Update | 2023:01.03.16.46.09 (UTC) administrator | |||
| DOI | 10.1140/epjc/s10052-022-10561-0 | |||
| ISSN | 1434-6044 | |||
| Citation Key | AvilaBernBoniNune:2022:InS8Ga | |||
| Title | Inferring S-8(z) and gamma(z) with cosmic growth rate measurements using machine learning  | |||
| Year | 2022 | |||
| Month | July | |||
| Access Date | 2024, May 13 | |||
| Type of Work | journal article | |||
| Secondary Type | PRE PI | |||
| Number of Files | 1 | |||
| Size | 539 KiB | |||
| 2. Context | ||||
| Author | 1 Avila, Felipe 2 Bernui, Armando 3 Bonilla, Alexander 4 Nunes, Rafael da Costa | |||
| Group | 1 2 3 4 DIAST-CGCE-INPE-MCTI-GOV-BR | |||
| Affiliation | 1 Observatório Nacional (ON) 2 Observatório Nacional (ON) 3 Universidade Federal de Juiz de Fora (UFJF) 4 Instituto Nacional de Pesquisas Espaciais (INPE) | |||
| Author e-Mail Address | 1 felipeavila@on.br 2 3 4 rafadcnunes@gmail.com | |||
| Journal | European Physical Journal C | |||
| Volume | 82 | |||
| Number | 7 | |||
| Pages | e594 | |||
| Secondary Mark | A2_INTERDISCIPLINAR A2_BIOTECNOLOGIA A2_ASTRONOMIA_/_FÍSICA B1_MATEMÁTICA_/_PROBABILIDADE_E_ESTATÍSTICA B1_ENGENHARIAS_IV | |||
| History (UTC) | 2022-07-13 17:04:49 :: simone -> administrator :: 2022 2023-01-03 16:46:09 :: administrator -> simone :: 2022 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Version Type | publisher | |||
| Abstract | Measurements of the cosmological parameter S-8 provided by cosmic microwave background and large scale structure data reveal some tension between them, suggesting that the clustering features of matter in these early and late cosmological tracers could be different. In this work, we use a supervised learning method designed to solve Bayesian approach to regression, known as Gaussian Processes regression, to quantify the cosmic evolution of S-8 up to z similar to 1.5. For this, we propose a novel approach to find firstly the evolution of the function S-8(z), then we find the function S-8(z). As a sub-product we obtain a minimal cosmological model-dependent sigma(8)(z = 0) and S-8(z = 0) estimates. We select independent data measurements of the growth rate f (z) and of [f sigma(8)] (z) according to criteria of non-correlated data, then we perform the Gaussian reconstruction of these data sets to obtain the cosmic evolution of sigma(8)(z), S-8(z), and the growth index gamma(z). Our statistical analyses show that S-8(z) is compatible with Planck ACDM cosmology; when evaluated at the present time we find sigma(8)(z = 0) = 0.766 +/- 0.116 and S-8(z = 0) = 0.732 +/- 0.115. Applying our methodology to the growth index, we find gamma(z = 0) = 0.465 +/- 0.140. Moreover, we compare our results with others recently obtained in the literature. In none of these functions, i.e. sigma(8)(Z), S-8(z), and gamma(z), do we find significant deviations from the standard cosmology predictions. | |||
| Area | CEA | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção a partir de 2021 > CGCE > Inferring S-8(z) and... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| Target File | Avila2022_Article_InferringS8ZS8ZAndGammaZΓZWith.pdf | |||
| User Group | simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Read Permission | deny from all and allow from 150.163 | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Next Higher Units | 8JMKD3MGPCW/46KTFK8 | |||
| Dissemination | WEBSCI; PORTALCAPES; SCOPUS. | |||
| Host Collection | urlib.net/www/2021/06.04.03.40 | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn keywords label language lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project resumeid rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||