Correlations Between the WMAP and MAXIMA Cosmic Microwave Background Anisotropy Maps
We cross-correlate the cosmic microwave background temperature anisotropy maps from the WMAP, MAXIMA-I, and MAXIMA-II experiments. We use the cross-spectrum, which is the spherical harmonic transform of the angular two-point correlation function, to quantify the correlation as a function of angular...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Journal article |
| Published: |
2003
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| _version_ | 1797077968181264384 |
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| author | Abroe, M Borrill, J Ferreira, P Hanany, S Jaffe, A Johnson, B Lee, A Rabii, B Richards, P Smoot, G Stompor, R Winant, C Wu, J |
| author_facet | Abroe, M Borrill, J Ferreira, P Hanany, S Jaffe, A Johnson, B Lee, A Rabii, B Richards, P Smoot, G Stompor, R Winant, C Wu, J |
| author_sort | Abroe, M |
| collection | OXFORD |
| description | We cross-correlate the cosmic microwave background temperature anisotropy maps from the WMAP, MAXIMA-I, and MAXIMA-II experiments. We use the cross-spectrum, which is the spherical harmonic transform of the angular two-point correlation function, to quantify the correlation as a function of angular scale. We find that the three possible pairs of cross-spectra are in close agreement with each other and with the power spectra of the individual maps. The probability that there is no correlation between the maps is smaller than 1 * 10^(-8). We also calculate power spectra for maps made of differences between pairs of maps, and show that they are consistent with no signal. The results conclusively show that the three experiments not only display the same statistical properties of the CMB anisotropy, but also detect the same features wherever the observed sky areas overlap. We conclude that the contribution of systematic errors to these maps is negligible and that MAXIMA and WMAP have accurately mapped the cosmic microwave background anisotropy. |
| first_indexed | 2024-03-07T00:25:40Z |
| format | Journal article |
| id | oxford-uuid:7e0aee4b-3a3b-4db0-8637-66cb0c92ace4 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T00:25:40Z |
| publishDate | 2003 |
| record_format | dspace |
| spelling | oxford-uuid:7e0aee4b-3a3b-4db0-8637-66cb0c92ace42022-03-26T21:07:44ZCorrelations Between the WMAP and MAXIMA Cosmic Microwave Background Anisotropy MapsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:7e0aee4b-3a3b-4db0-8637-66cb0c92ace4Symplectic Elements at Oxford2003Abroe, MBorrill, JFerreira, PHanany, SJaffe, AJohnson, BLee, ARabii, BRichards, PSmoot, GStompor, RWinant, CWu, JWe cross-correlate the cosmic microwave background temperature anisotropy maps from the WMAP, MAXIMA-I, and MAXIMA-II experiments. We use the cross-spectrum, which is the spherical harmonic transform of the angular two-point correlation function, to quantify the correlation as a function of angular scale. We find that the three possible pairs of cross-spectra are in close agreement with each other and with the power spectra of the individual maps. The probability that there is no correlation between the maps is smaller than 1 * 10^(-8). We also calculate power spectra for maps made of differences between pairs of maps, and show that they are consistent with no signal. The results conclusively show that the three experiments not only display the same statistical properties of the CMB anisotropy, but also detect the same features wherever the observed sky areas overlap. We conclude that the contribution of systematic errors to these maps is negligible and that MAXIMA and WMAP have accurately mapped the cosmic microwave background anisotropy. |
| spellingShingle | Abroe, M Borrill, J Ferreira, P Hanany, S Jaffe, A Johnson, B Lee, A Rabii, B Richards, P Smoot, G Stompor, R Winant, C Wu, J Correlations Between the WMAP and MAXIMA Cosmic Microwave Background Anisotropy Maps |
| title | Correlations Between the WMAP and MAXIMA Cosmic Microwave Background
Anisotropy Maps |
| title_full | Correlations Between the WMAP and MAXIMA Cosmic Microwave Background
Anisotropy Maps |
| title_fullStr | Correlations Between the WMAP and MAXIMA Cosmic Microwave Background
Anisotropy Maps |
| title_full_unstemmed | Correlations Between the WMAP and MAXIMA Cosmic Microwave Background
Anisotropy Maps |
| title_short | Correlations Between the WMAP and MAXIMA Cosmic Microwave Background
Anisotropy Maps |
| title_sort | correlations between the wmap and maxima cosmic microwave background anisotropy maps |
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