Planck intermediate results. LVI. Detection of the CMB dipole through modulation of the thermal Sunyaev-Zeldovich effect: Eppur si muove II

Abstract

The largest temperature anisotropy in the cosmic microwave background (CMB) is the dipole, which has been measured with increasing accuracy for more than three decades, particularly with the Planck satellite. The simplest interpretation of the dipole is that it is due to our motion with respect to the rest frame of the CMB. Since current CMB experiments infer temperature anisotropies from angular intensity variations, the dipole modulates the temperature anisotropies with the same frequency dependence as the thermal Sunyaev-Zeldovich (tSZ) effect. We present the first, and significant, detection of this signal in the tSZ maps and find that it is consistent with direct measurements of the CMB dipole, as expected. The signal contributes power in the tSZ maps, which is modulated in a quadrupolar pattern, and we estimate its contribution to the tSZ bispectrum, noting that it contributes negligible noise to the bispectrum at relevant scales.

arXiv comment15 pages, 8 figures. Added references, small clarifying and language edits. All results remain the same

References in corpus (29)

• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Data Processing, Sky Maps, and Basic Results
• The Cosmic Microwave Background Spectrum from the Full COBE/FIRAS Data Set
• Planck 2018 results. I. Overview and the cosmological legacy of Planck
• MASTER of the CMB Anisotropy Power Spectrum: A Fast Method for Statistical Analysis of Large and Complex CMB Data Sets
• Planck 2018 results. VII. Isotropy and Statistics of the CMB
• A unified pseudo-$C_{\ell }$ framework
• Dipole Anisotropy in the COBE DMR First-Year Sky Maps
• Planck 2018 results. III. High Frequency Instrument data processing and frequency maps
• Planck 2015 results. VIII. High Frequency Instrument data processing: Calibration and maps
• Planck 2013 results. XXVII. Doppler boosting of the CMB: Eppur si muove
• CMB and SZ effect separation with Constrained Internal Linear Combinations
• Planck 2015 results. XXII. A map of the thermal Sunyaev-Zeldovich effect
• MILCA, a Modified Internal Linear Combination Algorithm to extract astrophysical emissions from multi-frequency sky maps
• Peculiar velocity effects in high-resolution microwave background experiments
• Baryon acoustic signature in the clustering of density maxima
• Planck 2018 results. II. Low Frequency Instrument data processing
• Aspects of the Cosmic Microwave Background Dipole
• Detecting Bispectral Acoustic Oscillations from Inflation Using a New Flexible Estimator
• Bispectrum of the Sunyaev-Zel'dovich Effect
• Clusters of galaxies in the microwave band: influence of the motion of the Solar System
• Constraints on direction-dependent cosmic birefringence from Planck polarization data
• Discriminating between unresolved point sources and "negative" SZ clusters in CMB maps
• Aberration of the Cosmic Microwave Background
• Characterisation of the non-Gaussianity of radio and IR point-sources at CMB frequencies
• CMB all-scale blackbody distortions induced by linearizing temperature
• CMB all-scale blackbody distortions induced by linearizing temperature
• Taller in the saddle: constraining CMB physics using saddle points

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