Clusters of galaxies in the microwave band: influence of the motion of the Solar System

Abstract

In this work we consider the changes of the SZ cluster brightness, flux and number counts induced by the motion of the Solar System with respect to the frame defined by the cosmic microwave background (CMB). These changes are connected with the Doppler effect and aberration and exhibit a strong spectral and spatial dependence. The correction to the SZ cluster brightness and flux has an amplitude and spectral dependence, which is similar to the first order cluster peculiar velocity correction to the thermal SZ effect. Due to the change in the received cluster CMB flux the motion of the Solar System induces a dipolar asymmetry in the observed number of clusters above a given flux level. Similar effects were discussed for $\gamma$-ray bursts and radio galaxies, but here, due to the very peculiar frequency-dependence of the thermal SZ effect, the number of observed clusters in one direction of the sky can be both, decreased or increased depending on the frequency band. A detection of this asymmetry should be possible using future full sky CMB experiments with mJy sensitivities.

arXiv comment7 pages, 6 figures, submitted to Astronomy and Astrophysics, corrected pdf-problem

References in corpus (20)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Statistical Properties of X-ray Clusters: Analytic and Numerical Comparisons
• Ellipsoidal collapse and an improved model for the number and spatial distribution of dark matter haloes
• The Cosmic Microwave Background Spectrum from the Full COBE/FIRAS Data Set
• Cosmology with the Sunyaev-Zel'dovich Effect
• The Sunyaev-Zel'dovich Effect
• Submillimeter Galaxies
• Properties of the Intracluster Medium in an Ensemble of Nearby Galaxy Clusters
• Relativistic Corrections to the Sunyaev-Zel'dovich Effect for Clusters of Galaxies
• Relativistic corrections to the Sunyaev-Zel'dovich effect
• Hydrodynamic Simulations of the Sunyaev-Zel'dovich effect(s)
• Simulating the Sunyaev-Zel'dovich effect(s): including radiative cooling and energy injection by galactic winds
• Detection of the velocity dipole in the radio galaxies of the NRAO VLA Sky Survey
• Peculiar velocity effects in high-resolution microwave background experiments
• Microwave polarization in the direction of galaxy clusters induced by the CMB quadrupole anisotropy
• Superposition of blackbodies and the dipole anisotropy: A possibility to calibrate CMB experiments
• Searching for Large Scale Structure in Deep Radio Surveys
• Discriminating between unresolved point sources and "negative" SZ clusters in CMB maps
• The Expected Dipole in the Distribution of Cosmological Gamma-Ray Bursts
• ON THE MEASUREMENT OF A COSMOLOGICAL DIPOLE IN THE PHOTON NUMBER COUNTS OF GAMMA-RAY BURSTS

Cited by in corpus (33)

• CMB at 2x2 order: the dissipation of primordial acoustic waves and the observable part of the associated energy release
• Astrophysics with the Spatially and Spectrally Resolved Sunyaev-Zeldovich Effects: A Millimetre/Submillimetre Probe of the Warm and Hot Universe
• A fast and accurate method for computing the Sunyaev-Zeldovich signal of hot galaxy clusters
• High redshift radio galaxies and divergence from the CMB dipole
• Beyond y and μ: the shape of the CMB spectral distortions in the intermediate epoch, 1.5x10^4 < z < 2x10^5
• Sunyaev-Zeldovich signal processing and temperature-velocity moment method for individual clusters
• Tests of the CMB temperature-redshift relation, CMB spectral distortions and why adiabatic photon production is hard
• Aberrating the CMB sky: fast and accurate computation of the aberration kernel
• A dipole anisotropy of galaxy distribution: Does the CMB rest-frame exist in the local universe?
• Aberration of the Cosmic Microwave Background
• Planck intermediate results. LVI. Detection of the CMB dipole through modulation of the thermal Sunyaev-Zeldovich effect: Eppur si muove II
• Bayesian estimation of our local motion from the Planck-2018 CMB temperature map
• One Thousand and One Clusters: Measuring the Bulk Flow with the Planck ESZ and X-Ray Selected Galaxy Cluster Catalogs
• Exploring cosmic origins with CORE: effects of observer peculiar motion
• Dissecting the Compton scattering kernel I: Isotropic media
• Multiple scattering Sunyaev-Zeldovich signal I: lowest order effect
• Relativistic Corrections to the Sunyaev-Zeldovich Effect for Clusters of Galaxies. V. Effect of the Motion of the Observer
• Multiple scattering Sunyaev-Zeldovich signal II: relativistic effects
• Probing the cosmic microwave background temperature using the Sunyaev-Zeldovich effect
• Refined modelling of the radio SZ signal: kinematic terms, relativistic temperature corrections and anisotropies in the radio background
• Measuring our velocity from fluctuations in number counts
• Percent-level constraints on baryonic feedback with spectral distortion measurements
• Relativistic corrections to the Kompaneets equation
• Comment on "Cosmic radio dipole from NVSS and WENSS"
• Inverse-Compton Scattering of the Cosmic Infrared Background
• Stokes parameters spectral distortions due to the Sunyaev-Zel'dovich effect and an independent estimation of the CMB low multipoles
• Footprints of Doppler and Aberration Effects in CMB Experiments: Statistical and Cosmological Implications
• Astrophysics in 2005
• Analytical studies on the Sunyaev Zeldovich effect in the cluster of galaxies for three Lorentz frames
• Effects of observer peculiar motion on the isotropic background frequency spectrum: from monopole to higher multipoles
• Analytical studies on the Sunyaev-Zeldovich effect in the cluster of galaxies for three Lorentz frames II: single integral formula
• Scaling Laws in High-Energy Inverse Compton Scattering. II. Effect of Bulk Motions
• Effects of boosting on extragalactic components: methods and statistical studies