Test of cosmic isotropy in the Planck era
arXiv:1409.1114
Abstract
The two fundamental assumptions in cosmology are that the Universe is statistically homogeneous and isotropic when averaged on large scales. Given the big implication of these assumptions, there has been a lot of statistical tests carried out to verify their validity. Since the first high-precision Cosmic Microwave Background (CMB) data release by the WMAP satellite, many anomalies that challenges the isotropy assumption, including dipolar power asymmetry on large angular scales, have been reported. In this talk I will present a brief summary of the test of cosmic isotropy we carried out in the latest WMAP and Planck temperature data.
arXiv comment9 pages, 5 figures; Invited talk at the Cosmology Session of '49th Rencontres de Moriond 2014', La Thuile (Italy), March 22-29. Submitted for publication with the Conference Proceedings
References in corpus (4)
- HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
- Testing the cosmological principle of isotropy: local power spectrum estimates of the WMAP data
- Spontaneous Isotropy Breaking: A Mechanism for CMB Multipole Alignments
- Testing Global Isotropy of Three-Year Wilkinson Microwave Anisotropy Probe (WMAP) Data: Temperature Analysis