Constraints on general primordial non-Gaussianity using wavelets for the Wilkinson Microwave Anisotropy Probe 7-year data
We present constraints on the non-linear coupling parameter with the Wilkinson Microwave Anisotropy Probe (WMAP) data. We use the method based on the spherical Mexican hat wavelet to measure the parameter for three of the most interesting shapes of primordial non-Gaussianity: local, equilateral and...
Gespeichert in:
| Veröffentlicht in: | Monthly notices of the Royal Astronomical Society 2011-10, Vol.417 (1), p.488-494 |
|---|---|
| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 494 |
|---|---|
| container_issue | 1 |
| container_start_page | 488 |
| container_title | Monthly notices of the Royal Astronomical Society |
| container_volume | 417 |
| creator | Curto, A. Martínez-González, E. Barreiro, R. B. Hobson, M. P. |
| description | We present constraints on the non-linear coupling parameter
with the Wilkinson Microwave Anisotropy Probe (WMAP) data. We use the method based on the spherical Mexican hat wavelet to measure the
parameter for three of the most interesting shapes of primordial non-Gaussianity: local, equilateral and orthogonal. Our results indicate that this parameter is compatible with a Gaussian distribution within the 2σ confidence level (CL) for the three shapes and the results are consistent with the values presented by the WMAP team. We have included in our analysis the impact on
due to contamination by unresolved point sources. The point sources add a positive contribution of
,
and
. As mentioned by the WMAP team, the contribution of the point sources to the orthogonal and equilateral forms is expected to be larger than the local one and thus it cannot be neglected in future constraints on these parameters. Taking into account this contamination, our best estimates for
are
,
and
at 95 per cent CL. The three shapes are compatible with zero at 95 per cent CL (2σ). Our conclusion is that the WMAP 7-year data are consistent with Gaussian primordial fluctuations within 2σ CL. We stress however the importance of taking into account the unresolved point sources in the measurement of
in future works, especially when using more precise data sets such as the forthcoming Planck data. |
| doi_str_mv | 10.1111/j.1365-2966.2011.19284.x |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_pasca</sourceid><recordid>TN_cdi_proquest_journals_896049857</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><oup_id>10.1111/j.1365-2966.2011.19284.x</oup_id><sourcerecordid>2475146841</sourcerecordid><originalsourceid>FETCH-LOGICAL-c5204-d8609631103705c3e0ecad443062625f1dc3a4a831b57afc8ee24d5338180ef13</originalsourceid><addsrcrecordid>eNp1kUtv1DAUhS0EEkPb_2AhsXTwO84GqRpgYNQWBH0srdvEKZ4Ge7ATOvn3TTrVbBDe-Er3fOdK5yCEGS3Y9N5vCia0IrzSuuCUsYJV3Mhi9wItDouXaEGpUMSUjL1Gb3LeUEql4HqBxmUMuU_gQ59xDPjOBZegw9vkf8fU-GkMMZAVDDl7CL4f8ZB9uMMP8Nd1boLamHD_y-Eb3937kCePc1-nOO_xafA59iluR_w9xVuHSzI6SLiBHo7Rqxa67E6e_yN09fnT5fILOfu2-ro8PSO14lSSxmhaacEYFSVVtXDU1dBIKajmmquWNbUACUawW1VCWxvnuGyUEIYZ6lomjtDbve82xT-Dy73dxCGF6aQ1laayMqqcRO-eRZBr6NoEofbZzilAGi2XSgkpZrMPe92D79x42DNq5zLsxs6Z2zlzO5dhn8qwO3t-8eNpnAzE3iAO2__g5B98osie8rl3uwMH6d7qUpTK3lys7PV6_fNjuVpbKR4Bk76fBg</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>896049857</pqid></control><display><type>article</type><title>Constraints on general primordial non-Gaussianity using wavelets for the Wilkinson Microwave Anisotropy Probe 7-year data</title><source>OUP_牛津大学出版社OA刊</source><source>Wiley Blackwell Journals</source><creator>Curto, A. ; Martínez-González, E. ; Barreiro, R. B. ; Hobson, M. P.</creator><creatorcontrib>Curto, A. ; Martínez-González, E. ; Barreiro, R. B. ; Hobson, M. P.</creatorcontrib><description>We present constraints on the non-linear coupling parameter
with the Wilkinson Microwave Anisotropy Probe (WMAP) data. We use the method based on the spherical Mexican hat wavelet to measure the
parameter for three of the most interesting shapes of primordial non-Gaussianity: local, equilateral and orthogonal. Our results indicate that this parameter is compatible with a Gaussian distribution within the 2σ confidence level (CL) for the three shapes and the results are consistent with the values presented by the WMAP team. We have included in our analysis the impact on
due to contamination by unresolved point sources. The point sources add a positive contribution of
,
and
. As mentioned by the WMAP team, the contribution of the point sources to the orthogonal and equilateral forms is expected to be larger than the local one and thus it cannot be neglected in future constraints on these parameters. Taking into account this contamination, our best estimates for
are
,
and
at 95 per cent CL. The three shapes are compatible with zero at 95 per cent CL (2σ). Our conclusion is that the WMAP 7-year data are consistent with Gaussian primordial fluctuations within 2σ CL. We stress however the importance of taking into account the unresolved point sources in the measurement of
in future works, especially when using more precise data sets such as the forthcoming Planck data.</description><identifier>ISSN: 0035-8711</identifier><identifier>EISSN: 1365-2966</identifier><identifier>DOI: 10.1111/j.1365-2966.2011.19284.x</identifier><identifier>CODEN: MNRAA4</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Publishing Ltd</publisher><subject>Anisotropy ; Astronomy ; cosmic background radiation ; cosmology: observations ; Earth, ocean, space ; Exact sciences and technology ; methods: data analysis ; Normal distribution ; Stars & galaxies</subject><ispartof>Monthly notices of the Royal Astronomical Society, 2011-10, Vol.417 (1), p.488-494</ispartof><rights>2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5204-d8609631103705c3e0ecad443062625f1dc3a4a831b57afc8ee24d5338180ef13</citedby></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.1365-2966.2011.19284.x$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fj.1365-2966.2011.19284.x$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24553431$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Curto, A.</creatorcontrib><creatorcontrib>Martínez-González, E.</creatorcontrib><creatorcontrib>Barreiro, R. B.</creatorcontrib><creatorcontrib>Hobson, M. P.</creatorcontrib><title>Constraints on general primordial non-Gaussianity using wavelets for the Wilkinson Microwave Anisotropy Probe 7-year data</title><title>Monthly notices of the Royal Astronomical Society</title><addtitle>Monthly Notices of the Royal Astronomical Society</addtitle><description>We present constraints on the non-linear coupling parameter
with the Wilkinson Microwave Anisotropy Probe (WMAP) data. We use the method based on the spherical Mexican hat wavelet to measure the
parameter for three of the most interesting shapes of primordial non-Gaussianity: local, equilateral and orthogonal. Our results indicate that this parameter is compatible with a Gaussian distribution within the 2σ confidence level (CL) for the three shapes and the results are consistent with the values presented by the WMAP team. We have included in our analysis the impact on
due to contamination by unresolved point sources. The point sources add a positive contribution of
,
and
. As mentioned by the WMAP team, the contribution of the point sources to the orthogonal and equilateral forms is expected to be larger than the local one and thus it cannot be neglected in future constraints on these parameters. Taking into account this contamination, our best estimates for
are
,
and
at 95 per cent CL. The three shapes are compatible with zero at 95 per cent CL (2σ). Our conclusion is that the WMAP 7-year data are consistent with Gaussian primordial fluctuations within 2σ CL. We stress however the importance of taking into account the unresolved point sources in the measurement of
in future works, especially when using more precise data sets such as the forthcoming Planck data.</description><subject>Anisotropy</subject><subject>Astronomy</subject><subject>cosmic background radiation</subject><subject>cosmology: observations</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>methods: data analysis</subject><subject>Normal distribution</subject><subject>Stars & galaxies</subject><issn>0035-8711</issn><issn>1365-2966</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNp1kUtv1DAUhS0EEkPb_2AhsXTwO84GqRpgYNQWBH0srdvEKZ4Ge7ATOvn3TTrVbBDe-Er3fOdK5yCEGS3Y9N5vCia0IrzSuuCUsYJV3Mhi9wItDouXaEGpUMSUjL1Gb3LeUEql4HqBxmUMuU_gQ59xDPjOBZegw9vkf8fU-GkMMZAVDDl7CL4f8ZB9uMMP8Nd1boLamHD_y-Eb3937kCePc1-nOO_xafA59iluR_w9xVuHSzI6SLiBHo7Rqxa67E6e_yN09fnT5fILOfu2-ro8PSO14lSSxmhaacEYFSVVtXDU1dBIKajmmquWNbUACUawW1VCWxvnuGyUEIYZ6lomjtDbve82xT-Dy73dxCGF6aQ1laayMqqcRO-eRZBr6NoEofbZzilAGi2XSgkpZrMPe92D79x42DNq5zLsxs6Z2zlzO5dhn8qwO3t-8eNpnAzE3iAO2__g5B98osie8rl3uwMH6d7qUpTK3lys7PV6_fNjuVpbKR4Bk76fBg</recordid><startdate>201110</startdate><enddate>201110</enddate><creator>Curto, A.</creator><creator>Martínez-González, E.</creator><creator>Barreiro, R. B.</creator><creator>Hobson, M. P.</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></search><sort><creationdate>201110</creationdate><title>Constraints on general primordial non-Gaussianity using wavelets for the Wilkinson Microwave Anisotropy Probe 7-year data</title><author>Curto, A. ; Martínez-González, E. ; Barreiro, R. B. ; Hobson, M. P.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5204-d8609631103705c3e0ecad443062625f1dc3a4a831b57afc8ee24d5338180ef13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Anisotropy</topic><topic>Astronomy</topic><topic>cosmic background radiation</topic><topic>cosmology: observations</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>methods: data analysis</topic><topic>Normal distribution</topic><topic>Stars & galaxies</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Curto, A.</creatorcontrib><creatorcontrib>Martínez-González, E.</creatorcontrib><creatorcontrib>Barreiro, R. B.</creatorcontrib><creatorcontrib>Hobson, M. P.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</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>Barreiro, R. B.</au><au>Hobson, M. P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Constraints on general primordial non-Gaussianity using wavelets for the Wilkinson Microwave Anisotropy Probe 7-year data</atitle><jtitle>Monthly notices of the Royal Astronomical Society</jtitle><stitle>Monthly Notices of the Royal Astronomical Society</stitle><date>2011-10</date><risdate>2011</risdate><volume>417</volume><issue>1</issue><spage>488</spage><epage>494</epage><pages>488-494</pages><issn>0035-8711</issn><eissn>1365-2966</eissn><coden>MNRAA4</coden><abstract>We present constraints on the non-linear coupling parameter
with the Wilkinson Microwave Anisotropy Probe (WMAP) data. We use the method based on the spherical Mexican hat wavelet to measure the
parameter for three of the most interesting shapes of primordial non-Gaussianity: local, equilateral and orthogonal. Our results indicate that this parameter is compatible with a Gaussian distribution within the 2σ confidence level (CL) for the three shapes and the results are consistent with the values presented by the WMAP team. We have included in our analysis the impact on
due to contamination by unresolved point sources. The point sources add a positive contribution of
,
and
. As mentioned by the WMAP team, the contribution of the point sources to the orthogonal and equilateral forms is expected to be larger than the local one and thus it cannot be neglected in future constraints on these parameters. Taking into account this contamination, our best estimates for
are
,
and
at 95 per cent CL. The three shapes are compatible with zero at 95 per cent CL (2σ). Our conclusion is that the WMAP 7-year data are consistent with Gaussian primordial fluctuations within 2σ CL. We stress however the importance of taking into account the unresolved point sources in the measurement of
in future works, especially when using more precise data sets such as the forthcoming Planck data.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1111/j.1365-2966.2011.19284.x</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0035-8711 |
| ispartof | Monthly notices of the Royal Astronomical Society, 2011-10, Vol.417 (1), p.488-494 |
| issn | 0035-8711 1365-2966 |
| language | eng |
| recordid | cdi_proquest_journals_896049857 |
| source | OUP_牛津大学出版社OA刊; Wiley Blackwell Journals |
| subjects | Anisotropy Astronomy cosmic background radiation cosmology: observations Earth, ocean, space Exact sciences and technology methods: data analysis Normal distribution Stars & galaxies |
| title | Constraints on general primordial non-Gaussianity using wavelets for the Wilkinson Microwave Anisotropy Probe 7-year data |
| 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%3A42%3A23IST&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=Constraints%20on%20general%20primordial%20non-Gaussianity%20using%20wavelets%20for%20the%20Wilkinson%20Microwave%20Anisotropy%20Probe%207-year%20data&rft.jtitle=Monthly%20notices%20of%20the%20Royal%20Astronomical%20Society&rft.au=Curto,%20A.&rft.date=2011-10&rft.volume=417&rft.issue=1&rft.spage=488&rft.epage=494&rft.pages=488-494&rft.issn=0035-8711&rft.eissn=1365-2966&rft.coden=MNRAA4&rft_id=info:doi/10.1111/j.1365-2966.2011.19284.x&rft_dat=%3Cproquest_pasca%3E2475146841%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=896049857&rft_id=info:pmid/&rft_oup_id=10.1111/j.1365-2966.2011.19284.x&rfr_iscdi=true |