Wilkinson Microwave Anisotropy Probe 5-yr constraints on fnl with wavelets

We present a Gaussianity analysis of the Wilkinson Microwave Anisotropy Probe (WMAP) 5-yr cosmic microwave background (CMB) temperature anisotropy data maps. We use several third-order estimators based on the spherical Mexican hat wavelet. We impose constraints on the local non-linear coupling param...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Monthly notices of the Royal Astronomical Society 2009, Vol.393 (2), p.615-622
Hauptverfasser: Curto, A., Martínez-González, E., Mukherjee, P., Barreiro, R. B., Hansen, F. K., Liguori, M., Matarrese, S.
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 622
container_issue 2
container_start_page 615
container_title Monthly notices of the Royal Astronomical Society
container_volume 393
creator Curto, A.
Martínez-González, E.
Mukherjee, P.
Barreiro, R. B.
Hansen, F. K.
Liguori, M.
Matarrese, S.
description We present a Gaussianity analysis of the Wilkinson Microwave Anisotropy Probe (WMAP) 5-yr cosmic microwave background (CMB) temperature anisotropy data maps. We use several third-order estimators based on the spherical Mexican hat wavelet. We impose constraints on the local non-linear coupling parameter fnl using well-motivated non-Gaussian simulations. We analyse the WMAP maps at resolution of 6.9 arcmin for the Q, V, and W frequency bands. We use the KQ75 mask recommended by the WMAP team which masks out 28 per cent of the sky. The wavelet coefficients are evaluated at 10 different scales from 6.9 to 150 arcmin. With these coefficients, we compute the third order estimators which are used to perform a χ2 analysis. The χ2 statistic is used to test the Gaussianity of the WMAP data as well as to constrain the fnl parameter. Our results indicate that the WMAP data are compatible with the Gaussian simulations, and the fnl parameter is constrained to −8 < fnl < +111 at 95 per cent confidence level (CL) for the combined V+W map. This value has been corrected for the presence of undetected point sources, which add a positive contribution of Δfnl= 3 ± 5 in the V+W map. Our results are very similar to those obtained by the WMAP team using the bispectrum.
doi_str_mv 10.1111/j.1365-2966.2008.14230.x
format Article
fullrecord <record><control><sourceid>proquest_pasca</sourceid><recordid>TN_cdi_proquest_miscellaneous_20402108</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>20402108</sourcerecordid><originalsourceid>FETCH-LOGICAL-i3670-c0c67bfe833da527f421a9055e6bc7119e5a661e66ecd5c515923ac9be7307873</originalsourceid><addsrcrecordid>eNqNkcFOGzEQhi0EUkPad7CQym23Y8_a3r0gIVSgFVBUFYF6sRzjVR0WO9ibJnn77hKUQ0_MZUaab37NzE8IZVCyIb7MS4ZSFLyRsuQAdckqjlCu98hk19gnEwAURa0Y-0AOc54DQIVcTsj3e989-ZBjoNfeprgyfx09DT7HPsXFht6mOHNUFJtEbQy5T8aHPtMBb0NHV77_Q8eRzvX5IzloTZfdp7c8JXfnX3-dXRZXPy6-nZ1eFR6lgsKClWrWuhrx0Qiu2ooz04AQTs7ssGDjhJGSOSmdfRRWMNFwNLaZOYWgaoVTcrzVXaT4snS5188-W9d1Jri4zJpDBZxB_Q4QJK-aETz6D5zHZQrDEQOjsEI1fGtKPr9BJlvTtckE67NeJP9s0kZzxrCukA3cyZZb-c5tdn0GevRLz_Voix5tGReo9atfeq2vb36-loNAsRXwuXfrnYBJT1oqVEJfPvzWtxWv8YZJfY__AGXpmMo</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>207343704</pqid></control><display><type>article</type><title>Wilkinson Microwave Anisotropy Probe 5-yr constraints on fnl with wavelets</title><source>Wiley-Blackwell Journals</source><source>OUP_牛津大学出版社OA刊</source><creator>Curto, A. ; Martínez-González, E. ; Mukherjee, P. ; Barreiro, R. B. ; Hansen, F. K. ; Liguori, M. ; Matarrese, S.</creator><creatorcontrib>Curto, A. ; Martínez-González, E. ; Mukherjee, P. ; Barreiro, R. B. ; Hansen, F. K. ; Liguori, M. ; Matarrese, S.</creatorcontrib><description>We present a Gaussianity analysis of the Wilkinson Microwave Anisotropy Probe (WMAP) 5-yr cosmic microwave background (CMB) temperature anisotropy data maps. We use several third-order estimators based on the spherical Mexican hat wavelet. We impose constraints on the local non-linear coupling parameter fnl using well-motivated non-Gaussian simulations. We analyse the WMAP maps at resolution of 6.9 arcmin for the Q, V, and W frequency bands. We use the KQ75 mask recommended by the WMAP team which masks out 28 per cent of the sky. The wavelet coefficients are evaluated at 10 different scales from 6.9 to 150 arcmin. With these coefficients, we compute the third order estimators which are used to perform a χ2 analysis. The χ2 statistic is used to test the Gaussianity of the WMAP data as well as to constrain the fnl parameter. Our results indicate that the WMAP data are compatible with the Gaussian simulations, and the fnl parameter is constrained to −8 &lt; fnl &lt; +111 at 95 per cent confidence level (CL) for the combined V+W map. This value has been corrected for the presence of undetected point sources, which add a positive contribution of Δfnl= 3 ± 5 in the V+W map. Our results are very similar to those obtained by the WMAP team using the bispectrum.</description><identifier>ISSN: 0035-8711</identifier><identifier>EISSN: 1365-2966</identifier><identifier>DOI: 10.1111/j.1365-2966.2008.14230.x</identifier><identifier>CODEN: MNRAA4</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Publishing Ltd</publisher><subject>Astronomy ; Astrophysics ; Cosmic background radiation ; cosmic microwave background ; Earth, ocean, space ; Exact sciences and technology ; methods: data analysis ; Simulation ; Temperature</subject><ispartof>Monthly notices of the Royal Astronomical Society, 2009, Vol.393 (2), p.615-622</ispartof><rights>2009 The Authors. Journal compilation © 2009 RAS</rights><rights>2009 INIST-CNRS</rights><rights>Journal compilation © 2009 RAS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fj.1365-2966.2008.14230.x$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fj.1365-2966.2008.14230.x$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,4024,27923,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=21138431$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Curto, A.</creatorcontrib><creatorcontrib>Martínez-González, E.</creatorcontrib><creatorcontrib>Mukherjee, P.</creatorcontrib><creatorcontrib>Barreiro, R. B.</creatorcontrib><creatorcontrib>Hansen, F. K.</creatorcontrib><creatorcontrib>Liguori, M.</creatorcontrib><creatorcontrib>Matarrese, S.</creatorcontrib><title>Wilkinson Microwave Anisotropy Probe 5-yr constraints on fnl with wavelets</title><title>Monthly notices of the Royal Astronomical Society</title><addtitle>Monthly Notices of the Royal Astronomical Society</addtitle><description>We present a Gaussianity analysis of the Wilkinson Microwave Anisotropy Probe (WMAP) 5-yr cosmic microwave background (CMB) temperature anisotropy data maps. We use several third-order estimators based on the spherical Mexican hat wavelet. We impose constraints on the local non-linear coupling parameter fnl using well-motivated non-Gaussian simulations. We analyse the WMAP maps at resolution of 6.9 arcmin for the Q, V, and W frequency bands. We use the KQ75 mask recommended by the WMAP team which masks out 28 per cent of the sky. The wavelet coefficients are evaluated at 10 different scales from 6.9 to 150 arcmin. With these coefficients, we compute the third order estimators which are used to perform a χ2 analysis. The χ2 statistic is used to test the Gaussianity of the WMAP data as well as to constrain the fnl parameter. Our results indicate that the WMAP data are compatible with the Gaussian simulations, and the fnl parameter is constrained to −8 &lt; fnl &lt; +111 at 95 per cent confidence level (CL) for the combined V+W map. This value has been corrected for the presence of undetected point sources, which add a positive contribution of Δfnl= 3 ± 5 in the V+W map. Our results are very similar to those obtained by the WMAP team using the bispectrum.</description><subject>Astronomy</subject><subject>Astrophysics</subject><subject>Cosmic background radiation</subject><subject>cosmic microwave background</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>methods: data analysis</subject><subject>Simulation</subject><subject>Temperature</subject><issn>0035-8711</issn><issn>1365-2966</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNqNkcFOGzEQhi0EUkPad7CQym23Y8_a3r0gIVSgFVBUFYF6sRzjVR0WO9ibJnn77hKUQ0_MZUaab37NzE8IZVCyIb7MS4ZSFLyRsuQAdckqjlCu98hk19gnEwAURa0Y-0AOc54DQIVcTsj3e989-ZBjoNfeprgyfx09DT7HPsXFht6mOHNUFJtEbQy5T8aHPtMBb0NHV77_Q8eRzvX5IzloTZfdp7c8JXfnX3-dXRZXPy6-nZ1eFR6lgsKClWrWuhrx0Qiu2ooz04AQTs7ssGDjhJGSOSmdfRRWMNFwNLaZOYWgaoVTcrzVXaT4snS5188-W9d1Jri4zJpDBZxB_Q4QJK-aETz6D5zHZQrDEQOjsEI1fGtKPr9BJlvTtckE67NeJP9s0kZzxrCukA3cyZZb-c5tdn0GevRLz_Voix5tGReo9atfeq2vb36-loNAsRXwuXfrnYBJT1oqVEJfPvzWtxWv8YZJfY__AGXpmMo</recordid><startdate>2009</startdate><enddate>2009</enddate><creator>Curto, A.</creator><creator>Martínez-González, E.</creator><creator>Mukherjee, P.</creator><creator>Barreiro, R. B.</creator><creator>Hansen, F. K.</creator><creator>Liguori, M.</creator><creator>Matarrese, S.</creator><general>Blackwell Publishing Ltd</general><general>Wiley-Blackwell</general><general>Oxford University Press</general><scope>BSCLL</scope><scope>IQODW</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7TG</scope><scope>KL.</scope></search><sort><creationdate>2009</creationdate><title>Wilkinson Microwave Anisotropy Probe 5-yr constraints on fnl with wavelets</title><author>Curto, A. ; Martínez-González, E. ; Mukherjee, P. ; Barreiro, R. B. ; Hansen, F. K. ; Liguori, M. ; Matarrese, S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i3670-c0c67bfe833da527f421a9055e6bc7119e5a661e66ecd5c515923ac9be7307873</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Astronomy</topic><topic>Astrophysics</topic><topic>Cosmic background radiation</topic><topic>cosmic microwave background</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>methods: data analysis</topic><topic>Simulation</topic><topic>Temperature</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Curto, A.</creatorcontrib><creatorcontrib>Martínez-González, E.</creatorcontrib><creatorcontrib>Mukherjee, P.</creatorcontrib><creatorcontrib>Barreiro, R. B.</creatorcontrib><creatorcontrib>Hansen, F. K.</creatorcontrib><creatorcontrib>Liguori, M.</creatorcontrib><creatorcontrib>Matarrese, S.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Meteorological &amp; Geoastrophysical Abstracts</collection><collection>Meteorological &amp; Geoastrophysical Abstracts - Academic</collection><jtitle>Monthly notices of the Royal Astronomical Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Curto, A.</au><au>Martínez-González, E.</au><au>Mukherjee, P.</au><au>Barreiro, R. B.</au><au>Hansen, F. K.</au><au>Liguori, M.</au><au>Matarrese, S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Wilkinson Microwave Anisotropy Probe 5-yr constraints on fnl with wavelets</atitle><jtitle>Monthly notices of the Royal Astronomical Society</jtitle><addtitle>Monthly Notices of the Royal Astronomical Society</addtitle><date>2009</date><risdate>2009</risdate><volume>393</volume><issue>2</issue><spage>615</spage><epage>622</epage><pages>615-622</pages><issn>0035-8711</issn><eissn>1365-2966</eissn><coden>MNRAA4</coden><abstract>We present a Gaussianity analysis of the Wilkinson Microwave Anisotropy Probe (WMAP) 5-yr cosmic microwave background (CMB) temperature anisotropy data maps. We use several third-order estimators based on the spherical Mexican hat wavelet. We impose constraints on the local non-linear coupling parameter fnl using well-motivated non-Gaussian simulations. We analyse the WMAP maps at resolution of 6.9 arcmin for the Q, V, and W frequency bands. We use the KQ75 mask recommended by the WMAP team which masks out 28 per cent of the sky. The wavelet coefficients are evaluated at 10 different scales from 6.9 to 150 arcmin. With these coefficients, we compute the third order estimators which are used to perform a χ2 analysis. The χ2 statistic is used to test the Gaussianity of the WMAP data as well as to constrain the fnl parameter. Our results indicate that the WMAP data are compatible with the Gaussian simulations, and the fnl parameter is constrained to −8 &lt; fnl &lt; +111 at 95 per cent confidence level (CL) for the combined V+W map. This value has been corrected for the presence of undetected point sources, which add a positive contribution of Δfnl= 3 ± 5 in the V+W map. Our results are very similar to those obtained by the WMAP team using the bispectrum.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1111/j.1365-2966.2008.14230.x</doi><tpages>8</tpages></addata></record>
fulltext fulltext
identifier ISSN: 0035-8711
ispartof Monthly notices of the Royal Astronomical Society, 2009, Vol.393 (2), p.615-622
issn 0035-8711
1365-2966
language eng
recordid cdi_proquest_miscellaneous_20402108
source Wiley-Blackwell Journals; OUP_牛津大学出版社OA刊
subjects Astronomy
Astrophysics
Cosmic background radiation
cosmic microwave background
Earth, ocean, space
Exact sciences and technology
methods: data analysis
Simulation
Temperature
title Wilkinson Microwave Anisotropy Probe 5-yr constraints on fnl with wavelets
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-24T06%3A47%3A19IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_pasca&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Wilkinson%20Microwave%20Anisotropy%20Probe%205-yr%20constraints%20on%20fnl%20with%20wavelets&rft.jtitle=Monthly%20notices%20of%20the%20Royal%20Astronomical%20Society&rft.au=Curto,%20A.&rft.date=2009&rft.volume=393&rft.issue=2&rft.spage=615&rft.epage=622&rft.pages=615-622&rft.issn=0035-8711&rft.eissn=1365-2966&rft.coden=MNRAA4&rft_id=info:doi/10.1111/j.1365-2966.2008.14230.x&rft_dat=%3Cproquest_pasca%3E20402108%3C/proquest_pasca%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=207343704&rft_id=info:pmid/&rfr_iscdi=true