Can residuals of the Solar system foreground explain low multipole anomalies of the CMB ?

Abstract

The low multipole anomalies of the Cosmic Microwave Background has received much attention during the last few years. It is still not ascertained whether these anomalies are indeed primordial or the result of systematics or foregrounds. An example of a foreground, which could generate some non-Gaussian and statistically anisotropic features at low multipole range, is the very symmetric Kuiper Belt in the outer solar system. In this paper, expanding upon the methods presented by Maris et al. (2011), we investigate the contributions from the Kuiper Belt objects (KBO) to the WMAP ILC 7 map, whereby we can minimize the contrast in power between even and odd multipoles in the CMB, discussed discussed by Kim & Naselsky (2010). We submit our KBO de-correlated CMB signal to several tests, to analyze its validity, and find that incorporation of the KBO emission can decrease the quadrupole-octupole alignment and parity asymmetry problems, provided that the KBO signals has a non-cosmological dipole modulation, associated with the statistical anisotropy of the ILC 7 map. Additionally, we show that the amplitude of the dipole modulation, within a 2 sigma interval, is in agreement with the corresponding amplitudes, discussed by Lew (2008).

arXiv comment24 pages, 9 figures, 5 tables. Matches version in JCAP

References in corpus (57)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• 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
• Three Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Polarization Analysis
• 4-Year COBE DMR Cosmic Microwave Background Observations: Maps and Basic Results
• Asymmetries in the CMB anisotropy field
• The significance of the largest scale CMB fluctuations in WMAP
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Are There Cosmic Microwave Background Anomalies?
• Calibrator Design for the COBE Far Infrared Absolute Spectrophotometer (FIRAS)
• Detection of non-Gaussianity in the WMAP 1-year data using spherical wavelets
• The axis of evil
• Is the low-l microwave background cosmic?
• Imprints of a Primordial Preferred Direction on the Microwave Background
• Multipole Vectors--a new representation of the CMB sky and evidence for statistical anisotropy or non-Gaussianity at 2<=l<=8
• On the large-angle anomalies of the microwave sky
• The Uncorrelated Universe: Statistical Anisotropy and the Vanishing Angular Correlation Function in WMAP Years 1-3
• Increasing evidence for hemispherical power asymmetry in the five-year WMAP data
• Large-angle anomalies in the CMB
• Estimators for CMB Statistical Anisotropy
• Non-Gaussian Signatures in the Temperature Fluctuation Observed by the Wilkinson Microwave Anisotropy Probe
• Testing for Non-Gaussianity in the Wilkinson Microwave Anisotropy Probe Data: Minkowski Functionals and the Length of the Skeleton
• The non-Gaussian Cold Spot in WMAP: significance, morphology and foreground contribution
• Three-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Beam Profiles, Data Processing, Radiometer Characterization and Systematic Error Limits
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Data Processing Methods and Systematic Errors Limits
• Asymmetries in the local curvature of the WMAP data
• Non-Gaussianity of the derived maps from the first-year WMAP data
• Gauss--Legendre Sky Pixelization (GLESP) for CMB maps
• Bayesian analysis of sparse anisotropic universe models and application to the 5-yr WMAP data
• The Axis of Evil revisited
• Anomalous parity asymmetry of the Wilkinson Microwave Anisotropy Probe power spectrum data at low multipoles
• Is the Universe odd?
• The Hot and Cold Spots in the WMAP Data are Not Hot and Cold Enough
• Asymmetric Beams and CMB Statistical Anisotropy
• The Statistical Significance of the Low CMB Mulitipoles
• Phase Correlations in Cosmic Microwave Background Temperature Maps
• New constraints on Parity Symmetry from a re-analysis of the WMAP-7 low resolution power spectra
• Anomalous parity asymmetry of WMAP power spectrum data at low multpoles: is it cosmological or systematics?
• Primordial magnetic field and non-Gaussianity of the 1-year Wilkinson Microwave Anisotropy Probe (WMAP) data
• Correlating anomalies of the microwave sky: The Good, the Evil and the Axis
• Phase cross-correlation of the WMAP ILC map and foregrounds
• Template fitting and the large-angle CMB anomalies
• Is the CMB asymmetry due to the kinematic dipole?
• Cross-correlation of the CMB and foregrounds phases derived from the WMAP data
• Testing Gaussian random hypothesis with the cosmic microwave background temperature anisotropies in the three-year WMAP data
• Can a primordial magnetic field originate large-scale anomalies in WMAP data?
• Imprints of spherical non-trivial topologies on the CMB
• Cosmological Alfvén waves in the recent CMB data, and the observational bound on the primordial vector perturbation
• What Can the Cosmic Microwave Background Tell Us About the Outer Solar System?
• Symmetry and anti-symmetry of the CMB anisotropy pattern
• The local dust foregrounds in the microwave sky: I. Thermal emission spectra
• Hemispherical power asymmetry: parameter estimation from CMB WMAP5 data
• Large Scale Traces of Solar System Cold Dust on CMB Anisotropies
• Bayesian analysis of white noise levels in the 5-year WMAP data
• Parametric tension between even and odd multipole data of WMAP power spectrum: unaccounted contamination or missing parameters?
• Microwave Emission from the Edgeworth-Kuiper Belt and the Asteroid Belt Constrained from WMAP

Cited by in corpus (11)

• Planck 2013 results. XXIII. Isotropy and statistics of the CMB
• Planck 2013 results. XIV. Zodiacal emission
• Fingerprints of Galactic Loop I on the Cosmic Microwave Background
• Directional dependence of CMB parity asymmetry
• North-South non-Gaussian asymmetry in PLANCK CMB maps
• Large-scale anomalies of the CMB in the curvaton scenario
• Testing CMB Anomalies in E-mode Polarization with Current and Future Data
• Finsler space-time can explain both parity asymmetry and power deficit seen in CMB temperature anisotropies
• The Microwave Thermal Emission from the Zodiacal Dust Cloud Predicted with Contemporary Meteoroid Models
• Reconstruction of Missing Data using Iterative Harmonic Expansion
• Statistics of the Planck CMB signal in direction of gamma-ray bursts from the BATSE and BeppoSAX catalogs