The Atacama Cosmology Telescope: Calibration with WMAP Using Cross-Correlations
We present a new calibration method based on cross-correlations with WMAP and apply it to data from the Atacama Cosmology Telescope (ACT). ACT's observing strategy and map making procedure allows an unbiased reconstruction of the modes in the maps over a wide range of multipoles. By directly ma...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
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2010
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| _version_ | 1826258478093565952 |
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| author | Hajian, A Acquaviva, V Ade, P Aguirre, P Amiri, M Appel, J Barrientos, L Battistelli, E Bond, JR Brown, B Burger, B Chervenak, J Das, S Devlin, M Dicker, SR Doriese, W Dunkley, J Dunner, R Essinger-Hileman, T Fisher, R Fowler, J Halpern, M Hasselfield, M Hernandez-Monteagudo, C Hilton, G |
| author_facet | Hajian, A Acquaviva, V Ade, P Aguirre, P Amiri, M Appel, J Barrientos, L Battistelli, E Bond, JR Brown, B Burger, B Chervenak, J Das, S Devlin, M Dicker, SR Doriese, W Dunkley, J Dunner, R Essinger-Hileman, T Fisher, R Fowler, J Halpern, M Hasselfield, M Hernandez-Monteagudo, C Hilton, G |
| author_sort | Hajian, A |
| collection | OXFORD |
| description | We present a new calibration method based on cross-correlations with WMAP and apply it to data from the Atacama Cosmology Telescope (ACT). ACT's observing strategy and map making procedure allows an unbiased reconstruction of the modes in the maps over a wide range of multipoles. By directly matching the ACT maps to WMAP observations in the multipole range of 400 < ell < 1000, we determine the absolute calibration with an uncertainty of 2% in temperature. The precise measurement of the calibration error directly impacts the uncertainties in the cosmological parameters estimated from the ACT power spectra. We also present a combined map based on ACT and WMAP data that has high signal-to-noise over a wide range of multipoles. |
| first_indexed | 2024-03-06T18:34:36Z |
| format | Journal article |
| id | oxford-uuid:0acb64f7-2829-46e8-b7e2-644faf0adc3e |
| institution | University of Oxford |
| last_indexed | 2024-03-06T18:34:36Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | oxford-uuid:0acb64f7-2829-46e8-b7e2-644faf0adc3e2022-03-26T09:26:00ZThe Atacama Cosmology Telescope: Calibration with WMAP Using Cross-CorrelationsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0acb64f7-2829-46e8-b7e2-644faf0adc3eSymplectic Elements at Oxford2010Hajian, AAcquaviva, VAde, PAguirre, PAmiri, MAppel, JBarrientos, LBattistelli, EBond, JRBrown, BBurger, BChervenak, JDas, SDevlin, MDicker, SRDoriese, WDunkley, JDunner, REssinger-Hileman, TFisher, RFowler, JHalpern, MHasselfield, MHernandez-Monteagudo, CHilton, GWe present a new calibration method based on cross-correlations with WMAP and apply it to data from the Atacama Cosmology Telescope (ACT). ACT's observing strategy and map making procedure allows an unbiased reconstruction of the modes in the maps over a wide range of multipoles. By directly matching the ACT maps to WMAP observations in the multipole range of 400 < ell < 1000, we determine the absolute calibration with an uncertainty of 2% in temperature. The precise measurement of the calibration error directly impacts the uncertainties in the cosmological parameters estimated from the ACT power spectra. We also present a combined map based on ACT and WMAP data that has high signal-to-noise over a wide range of multipoles. |
| spellingShingle | Hajian, A Acquaviva, V Ade, P Aguirre, P Amiri, M Appel, J Barrientos, L Battistelli, E Bond, JR Brown, B Burger, B Chervenak, J Das, S Devlin, M Dicker, SR Doriese, W Dunkley, J Dunner, R Essinger-Hileman, T Fisher, R Fowler, J Halpern, M Hasselfield, M Hernandez-Monteagudo, C Hilton, G The Atacama Cosmology Telescope: Calibration with WMAP Using Cross-Correlations |
| title | The Atacama Cosmology Telescope: Calibration with WMAP Using
Cross-Correlations |
| title_full | The Atacama Cosmology Telescope: Calibration with WMAP Using
Cross-Correlations |
| title_fullStr | The Atacama Cosmology Telescope: Calibration with WMAP Using
Cross-Correlations |
| title_full_unstemmed | The Atacama Cosmology Telescope: Calibration with WMAP Using
Cross-Correlations |
| title_short | The Atacama Cosmology Telescope: Calibration with WMAP Using
Cross-Correlations |
| title_sort | atacama cosmology telescope calibration with wmap using cross correlations |
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