{"doi":"10.1103/physrevlett.91.131302","title":"Correlated Adiabatic and Isocurvature Cosmic Microwave Background Fluctuations in the Wake of the Results from the Wilkinson Microwave Anisotropy Probe","abstract":null,"journal":"Physical Review Letters","year":2003,"id":679935,"datarank":0.6284482113039639,"base_score":4.189654742026425,"endowment":4.189654742026425,"self_citation_contribution":0.6284482113039639,"citation_network_contribution":0.0,"self_endowment_contribution":0.6284482113039639,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":65,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":1,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1776529,"name":"Vesa Muhonen","orcid":null,"position":1,"is_corresponding":false},{"id":1713170,"name":"Jussi Väliviita","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Correlated Adiabatic and Isocurvature Cosmic Microwave Background Fluctuations in the Wake of the Results from the Wilkinson Microwave Anisotropy Probe","abstract":"In general correlated models, in addition to the usual adiabatic component with a spectral index ${n}_{\\mathrm{a}\\mathrm{d}\\mathrm{1}}$ there is another adiabatic component with a spectral index ${n}_{\\mathrm{a}\\mathrm{d}\\mathrm{2}}$ generated by entropy perturbation during inflation. We extend the analysis of a correlated mixture of adiabatic and isocurvature cosmic microwave background fluctuations of the Wilkinson Microwave Anisotropy Probe (WMAP) group, who set the two adiabatic spectral indices equal. Allowing ${n}_{\\mathrm{a}\\mathrm{d}\\mathrm{1}}$ and ${n}_{\\mathrm{a}\\mathrm{d}\\mathrm{2}}$ to vary independently we find that the WMAP data favor models where the two adiabatic components have opposite spectral tilts. Using the WMAP data only, the $2\\ensuremath{\\sigma}$ upper bound for the isocurvature fraction ${f}_{\\mathrm{i}\\mathrm{s}\\mathrm{o}}$ of the initial power spectrum at ${k}_{0}=0.05\\text{ }{\\mathrm{M}\\mathrm{p}\\mathrm{c}}^{\\ensuremath{-}1}$ increases somewhat, e.g., from 0.76 of ${n}_{\\mathrm{a}\\mathrm{d}\\mathrm{2}}={n}_{\\mathrm{a}\\mathrm{d}\\mathrm{1}}$ models to 0.84 with a prior ${n}_{\\mathrm{i}\\mathrm{s}\\mathrm{o}}<1.84$ for the isocurvature spectral index.","is_dataset_classified":null,"base_score":4.189654742026425,"endowment":4.189654742026425,"datacite_reuse_total":1,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"14525297","pmcid":null,"openalex_id":"https://openalex.org/W2075370811","authors":[],"funders":[],"total_grants":0,"fwci":4.671,"citation_percentile":0.9472519,"influential_citations":0,"citation_trend":[{"year":2012,"count":2},{"year":2013,"count":2},{"year":2014,"count":3},{"year":2015,"count":3},{"year":2016,"count":5},{"year":2017,"count":2},{"year":2018,"count":1},{"year":2019,"count":1},{"year":2020,"count":1},{"year":2021,"count":1},{"year":2024,"count":1}],"oa_status":"green","license":"http://link.aps.org/licenses/aps-default-license","oa_locations":[{"url":"https://arxiv.org/pdf/astro-ph/0304175","host_type":"repository"},{"url":"http://arxiv.org/pdf/astro-ph/0304175","host_type":"GREEN"},{"url":"https://arxiv.org/pdf/astro-ph/0304175","host_type":"repository"},{"url":"http://link.aps.org/article/10.1103/PhysRevLett.91.131302","host_type":"publisher"},{"url":"http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevLett.91.131302/fulltext","host_type":"publisher"},{"url":"http://arxiv.org/abs/astro-ph/0304175","host_type":"repository"},{"url":"https://doi.org/10.1103/physrevlett.91.131302","host_type":"journal"},{"url":"https://pubmed.ncbi.nlm.nih.gov/14525297","host_type":"repository"}],"fields_of_study":["Cosmology and Gravitation Theories","Galaxies: Formation, Evolution, Phenomena","Relativity and Gravitational Theory","Physics","Medicine"],"mesh_terms":[],"keywords":["CMB cold spot","Cosmic microwave background","Physics","Adiabatic process","Spectral index","Spectral density","Anisotropy","Planck","Cosmic background radiation","Astrophysics","Microwave","Spectral line","Quantum mechanics","Statistics"],"sdg_mappings":[{"sdg_number":0,"sdg_label":"Affordable and clean energy"}],"linked_datasets":[{"doi":"10.48550/arxiv.astro-ph/0304175","title":"Correlated adiabatic and isocurvature CMB fluctuations in the wake of the WMAP","publisher":"arXiv","resource_type":"Text"}],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-08-17T14:03:23.966064Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}