LFI & HFI PR3 Legacy Frequency Sky Maps
收藏ESA Earth Online2026-06-22 收录
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Sky maps give the best estimate of the intensity and polarization (Stokes Q and U components), if available, of the signal from the sky after removal of known systematic effects (mostly instrumental, but including also the solar and Earthmotion dipoles, Galactic stray light, and the zodiacal light). The Planck Collaboration has made three releases of maps, in 2013, 2015 and 2018. These DOIs correspond to the 2018 release. Full mission full channel maps are built using all the valid detectors of a frequency channel and cover either the full or the nominal mission. For HFI, the 1438 and 5453 bolometers are rejected entirely, since they are seriously affected by RTS noise. HFI provides the Q and U components for the 100, 143, 217 and 353 GHz channels only. LFI provides the I, Q, and U maps for all the channels. Note that the HFI and LFI Q and U maps are corrected for bandpass leakage, version without correction for LFI are also available in the PLA. The I, Q, and U maps are displayed in the figures below. The colour range here is set using a histogram equalization scheme (from HEALPix) that is useful for these nonGaussian data fields. For visualization purposes, the Q and U maps shown here have been smoothed with a 1° Gaussian kernel, otherwise they look like noise to the naked eye. The 70 GHz full map is also available at Nside2048. The Planck PR3 Full Mission Frequency maps can be downloaded from the Planck Legacy Archive. Further details about the Planck frequency maps can be found in the bibliography and in the Planck Legacy Explanaatory Supplement: https://wiki.cosmos.esa.int/plancklegacyarchive/index.php/Frequency_maps



