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http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1818| THE ATACAMA COSMOLOGY TELESCOPE: CALIBRATION WITH THE WILKINSON MICROWAVE ANISOTROPY PROBE USING CROSS-CORRELATIONS | |
| David Hughes | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| Cosmic background radiation Cosmology: observations Methods: data analysis Methods: statistical | |
| We present a new calibration method based on cross-correlations with the Wilkinson Microwave Anisotropy Probe (WMAP) and apply it to data from the Atacama Cosmology Telescope (ACT). ACT’s observing strategy and mapmaking 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 < l < 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 a high signal-to-noise ratio over a wide range of multipoles. | |
| The Astrophysical Journal | |
| 20-10-2011 | |
| Artículo | |
| Inglés | |
| Estudiantes Investigadores Público en general | |
| Hajian, A., et al., (2011), THE ATACAMA COSMOLOGY TELESCOPE: CALIBRATION WITH THE WILKINSON MICROWAVE ANISOTROPY PROBE USING CROSS-CORRELATIONS, The Astrophysical Journal, Vol.740(86):1-9 | |
| ASTRONOMÍA Y ASTROFÍSICA | |
| Versión aceptada | |
| acceptedVersion - Versión aceptada | |
| Aparece en las colecciones: | Artículos de Astrofísica |
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