Speaker
Description
The QUIJOTE MFI instrument (2012-2018) observed the sky at four frequency bands, 11, 13, 17, and 19 GHz, at 1 degree angular resolution. For ground-based Cosmic Microwave Background experiments like QUIJOTE, the atmosphere is the main source of contamination in the data. Using the entire database of MFI observations, we characterized the correlation properties of the atmospheric signal in those frequency bands. This analysis involved performing the cross-correlation function of time-ordered data (TOD) between the signals of QUIJOTE’s horn measuring at the same frequency. Moreover, we investigated the cross-power spectrum of atmospheric signals at 20, 30, and 40 GHz. We found that the atmosphere stays stable for a period of around 2 to 3 hours and that the atmosphere follows a flattened Kolmogorov spectrum. This information will help improve the current sky models at these frequencies. It could be used in further MFI reanalyses or to prepare future observations at these frequencies (e.g., Tenerife Microwave Spectrometer).
| Would you be interested in presenting a poster if the conference is oversubcribed? | No |
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