Weak Lensing Effect on CMB in the Presence of a Dipole Anisotropy

Abstract

We investigate weak lensing effect on cosmic microwave background (CMB) in the presence of dipole anisotropy. The approach of flat-sky approximation is considered. We determine the functions ${\sigma }_0^2$ and ${\sigma }_2^2$ that appear in expressions of the lensed CMB power spectrum in the presence of a dipole anisotropy. We determine the correction to B-mode power spectrum which is found to be appreciable at low multipoles ($l$). However, the temperature and E-mode power spectrum are not altered significantly.

arXiv comment9 pages

References in corpus (23)

• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Final Maps and Results
• Weak Gravitational Lensing of the CMB
• Asymmetries in the CMB anisotropy field
• A high resolution foreground cleaned CMB map from WMAP
• Planck 2013 results. XXIII. Isotropy and statistics of the CMB
• Detection of non-Gaussianity in the WMAP 1-year data using spherical wavelets
• The axis of evil
• Gravitational Lensing Effect on Cosmic Microwave Background Polarization
• Weak Lensing of the CMB: A Harmonic Approach
• Multipole Vectors--a new representation of the CMB sky and evidence for statistical anisotropy or non-Gaussianity at 2<=l<=8
• GRAVITATIONAL LENSING EFFECT ON COSMIC MICROWAVE BACKGROUND ANISOTROPIES: A POWER SPECTRUM APPROACH
• Spontaneous Isotropy Breaking: A Mechanism for CMB Multipole Alignments
• A Hemispherical Power Asymmetry from Inflation
• The Virgo Alignment Puzzle in Propagation of Radiation on Cosmological Scales
• Wavelets and WMAP non-Gaussianity
• Anisotropy in the Distribution of Galactic Radio Polarizations
• Cosmic microwave background anomalies in an open universe
• Large Scale Alignment of Optical Polarizations from Distant QSOs using Coordinate Invariant Statistics
• Exploring cosmic origins with CORE: gravitational lensing of the CMB
• Dipole Modulation of Cosmic Microwave Background Temperature and Polarization
• Imprint of Inhomogeneous and Anisotropic Primordial Power Spectrum on CMB Polarization
• Generating Intrinsic Dipole Anisotropy in the Large Scale Structures
• Weak Gravitational Lensing of CMB - Revisit