| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m16.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 6qtX3pFwXQZ3r59YDa/JwF7G |
| Repository | sid.inpe.br/iris@1916/2005/12.21.12.50 (restricted access) |
| Last Update | 2005:12.22.12.12.00 (UTC) administrator |
| Metadata Repository | sid.inpe.br/iris@1916/2005/12.21.12.50.10 |
| Metadata Last Update | 2018:06.05.01.16.38 (UTC) administrator |
| Secondary Key | INPE-13070-PRE/8334 |
| ISSN | 0378-4371 |
| Citation Key | AndradeWuenRibe:2005:CoMiAd |
| Title | Correlated mixture between adiabatic and isocurvature fluctuations and recent CMB observations  |
| Year | 2005 |
| Month | FEB |
| Access Date | 2024, Apr. 27 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 3098 KiB |
| 2. Context | |
| Author | 1 Andrade, Ana Paula de Almeida 2 Wuensche, Carlos Alexandre 3 Ribeiro, André Luís Batista |
| Group | 1 DAS-INPE-MCT-BR |
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais, Divisão de Astrofísica (INPE, DAS) |
| Journal | Physica A: Statistical Mechanics and its Applications |
| Volume | 71 |
| Number | 4 |
| Pages | Art. No. 043501 |
| History (UTC) | 2005-12-22 12:13:03 :: vinicius -> administrator :: 2008-06-10 22:41:13 :: administrator -> banon :: 2010-05-17 18:17:10 :: banon -> administrator :: 2018-06-05 01:16:38 :: administrator -> marciana :: 2005 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Keywords | PROBE WMAP OBSERVATIONS COSMOLOGICAL PARAMETERS INFLATIONARY UNIVERSE POWER SPECTRUM GAUSSIANITY |
| Abstract | This work presents a reduced chi(nu)(2) test to search for non-Gaussian signals in the cosmic microwave background radiation (CMBR) TT power spectrum of recent CMBR data, Wilkinson Anisotropy Microwave Probe, Arcminute Cosmology Bolometer Array Receiver, and Cosmic Background Imager data sets, assuming a mixed density field including adiabatic and isocurvature fluctuations. We assume a skew positive mixed model with adiabatic inflation perturbations plus additional isocurvature perturbations possibly produced by topological defects. The joint probability distribution used in this context is a weighted combination of Gaussian and non-Gaussian random fields. Results from simulations of CMBR temperature for the mixed field show a distinct signature in CMB power spectrum for very small deviations (similar to0.1%) from a pure Gaussian field, and can be used as a direct test for the nature of primordial fluctuations. A reduced chi(nu)(2) test applied on the most recent CMBR observations reveals that an isocurvature fluctuations field is not ruled out and indeed permits a very good description for a flat geometry Lambda-CDM Universe, chi(930)(2)similar to1.5, rather than the simple inflationary standard model with chi(930)(2)similar to2.3. This result may looks is particular discrepant with the reduced chi(2) of 1.07 obtained with the same model in Spergel et al. [Astrophys. J. 148, 175 (2003)] for temperature only, however, our work is restricted to a region of the parameter space that does not include the best fit model for TT only of Spergel et al.. . |
| Area | CEA |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAS > Correlated mixture between... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| Target File | Correlated mixture between.pdf |
| User Group | administrator banon vinicius |
| Visibility | shown |
| Copy Holder | SID/SCD |
| Archiving Policy | denypublisher denyfinaldraft24 |
| Read Permission | deny from all and allow from 150.163 |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ETR8EH |
| Dissemination | WEBSCI; PORTALCAPES; COMPENDEX. |
| Host Collection | sid.inpe.br/banon/2003/08.15.17.40 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyright creatorhistory descriptionlevel documentstage doi e-mailaddress electronicmailaddress format isbn label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup resumeid rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url versiontype |
| 7. Description control | |
| e-Mail (login) | marciana |
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