Angular two-point correlation of NVSS galaxies revisited
We measure the angular two-point correlation and angular power spectrum from the NRAO VLA Sky Survey (NVSS) of radio galaxies. They are found to be consistent with the best-fit cosmological model from the Planck analysis, and with the redshift distribution obtained from the Combined EIS-NVSS Survey...
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| Veröffentlicht in: | Astronomy and astrophysics (Berlin) 2016-07, Vol.591, p.A135 |
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| container_title | Astronomy and astrophysics (Berlin) |
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| creator | Chen, Song Schwarz, Dominik J. |
| description | We measure the angular two-point correlation and angular power spectrum from the NRAO VLA Sky Survey (NVSS) of radio galaxies. They are found to be consistent with the best-fit cosmological model from the Planck analysis, and with the redshift distribution obtained from the Combined EIS-NVSS Survey Of Radio Sources (CENSORS). Our analysis is based on an optimal estimation of the two-point correlation function and makes use of a new mask that takes into account direction dependent effects of the observations, sidelobe effects of bright sources and galactic foreground. We also set a flux threshold and take the cosmic radio dipole into account. The latter turns out to be an essential step in the analysis. This improved cosmological analysis of the NVSS emphasizes the importance of a flux calibration that is robust and stable on large angular scales for future radio continuum surveys. |
| doi_str_mv | 10.1051/0004-6361/201526956 |
| format | Article |
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They are found to be consistent with the best-fit cosmological model from the Planck analysis, and with the redshift distribution obtained from the Combined EIS-NVSS Survey Of Radio Sources (CENSORS). Our analysis is based on an optimal estimation of the two-point correlation function and makes use of a new mask that takes into account direction dependent effects of the observations, sidelobe effects of bright sources and galactic foreground. We also set a flux threshold and take the cosmic radio dipole into account. The latter turns out to be an essential step in the analysis. This improved cosmological analysis of the NVSS emphasizes the importance of a flux calibration that is robust and stable on large angular scales for future radio continuum surveys.</description><subject>Astronomical models</subject><subject>Continuums</subject><subject>Correlation analysis</subject><subject>Flux</subject><subject>galaxies: statistics</subject><subject>large-scale structure of Universe</subject><subject>Radio</subject><subject>radio continuum: galaxies</subject><subject>Radio galaxies</subject><subject>Radio sources (astronomy)</subject><subject>Sidelobes</subject><issn>0004-6361</issn><issn>1432-0746</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNqNkMtKAzEUQIMoWKtf4GaWbsbm5jWZZa1PKAq2PnAT0kymRKeTmqRa_94pla5dXS6cc-EehE4BnwPmMMAYs1xQAQOCgRNRcrGHesAoyXHBxD7q7YhDdBTje7cSkLSH5LCdrxodsvTt86V3bcqMD8E2OjnfZr7O7p8nk2yuG712NmbBfrnokq2O0UGtm2hP_mYfPV1fTUe3-fjh5m40HOeGljLlJadUFEWNhawrUVFJ64owsJwJmEFdAZNcVBoYYCKpJLOSFzNpTGkYZYWpaB-dbe8ug_9c2ZjUwkVjm0a31q-i6r7gglAmy3-gAFJiVpIOpVvUBB9jsLVaBrfQ4UcBVpukahNMbYKpXdLOyreWi8mud4oOH0oUtOBK4hf1Op5ePMLlm8L0F0IIdbc</recordid><startdate>20160701</startdate><enddate>20160701</enddate><creator>Chen, Song</creator><creator>Schwarz, Dominik J.</creator><general>EDP Sciences</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>KL.</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20160701</creationdate><title>Angular two-point correlation of NVSS galaxies revisited</title><author>Chen, Song ; Schwarz, Dominik J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c398t-9533677f068fd6d383fd241e5461b1fd14856da141028382b957b8cc9c4347cd3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Astronomical models</topic><topic>Continuums</topic><topic>Correlation analysis</topic><topic>Flux</topic><topic>galaxies: statistics</topic><topic>large-scale structure of Universe</topic><topic>Radio</topic><topic>radio continuum: galaxies</topic><topic>Radio galaxies</topic><topic>Radio sources (astronomy)</topic><topic>Sidelobes</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chen, Song</creatorcontrib><creatorcontrib>Schwarz, Dominik J.</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Astronomy and astrophysics (Berlin)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chen, Song</au><au>Schwarz, Dominik J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Angular two-point correlation of NVSS galaxies revisited</atitle><jtitle>Astronomy and astrophysics (Berlin)</jtitle><date>2016-07-01</date><risdate>2016</risdate><volume>591</volume><spage>A135</spage><pages>A135-</pages><issn>0004-6361</issn><eissn>1432-0746</eissn><abstract>We measure the angular two-point correlation and angular power spectrum from the NRAO VLA Sky Survey (NVSS) of radio galaxies. 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| ispartof | Astronomy and astrophysics (Berlin), 2016-07, Vol.591, p.A135 |
| issn | 0004-6361 1432-0746 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1835623489 |
| source | Bacon EDP Sciences France Licence nationale-ISTEX-PS-Journals-PFISTEX; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; EDP Sciences |
| subjects | Astronomical models Continuums Correlation analysis Flux galaxies: statistics large-scale structure of Universe Radio radio continuum: galaxies Radio galaxies Radio sources (astronomy) Sidelobes |
| title | Angular two-point correlation of NVSS galaxies revisited |
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