Cosmic microwave background power spectrum estimation with the destriping technique

Abstract

Extraction of the CMB (Cosmic Microwave Background) angular power spectrum is a challenging task for current and future CMB experiments due to the large data sets involved. Here we describe an implementation of MASTER (Monte carlo Apodised Spherical Transform EstimatoR) which exploits the destriping technique as a map-making method. In this method a noise estimate based on destriped noise-only MC (Monte Carlo) simulations is subtracted from the pseudo angular power spectrum. As a working case we use realistic simulations of the PLANCK LFI (Low Frequency Instrument). We found that the effect of destriping on a pure sky signal is minimal and requires no correction. Instead we found an effect related to the distribution of detector pointings, which affects the high multipole part of the power spectrum. We correct for this by subtracting a ``signal bias'' estimated by MC simulations. We also give analytical estimates for this signal bias. Our method is fast and accurate enough (the estimator is un-biased and errors are close to theoretical expectations for maximal accuracy) to estimate the CMB angular power spectra for current and future CMB space missions. This study is related to PLANCK LFI activities.

16 pages, 23 figures, submitted to MNRAS

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Cited by in corpus (13)

• Planck early results: first assessment of the High Frequency Instrument in-flight performance
• Planck early results. III. First assessment of the Low Frequency Instrument in-flight performance
• Planck 2015 results. IV. Low Frequency Instrument beams and window functions
• Planck 2013 results. IV. Low Frequency Instrument beams and window functions
• Destriping CMB temperature and polarization maps
• Comparison of map-making algorithms for CMB experiments
• The Resolved Sunyaev--Zel'dovich Profiles of Nearby Galaxy Groups
• Effects of Destriping Errors on Estimates of the CMB Power Spectrum
• Making maps of Cosmic Microwave Background polarization for B-mode studies: the POLARBEAR example
• In-flight calibration and verification of the Planck-LFI instrument
• Observing small-scale $\gamma$-ray anisotropies with the Cherenkov Telescope Array
• On the wavelet analysis of CMB time ordered data: application to Archeops
• Effect of Fourier filters in removing periodic systematic effects from CMB data