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Kolmogorov's statistic is used for the analysis of properties of perturbations in the Cosmic Microwave Background signal. We obtain the maps of the Kolmogorov stochasticity parameter for W and V band temperature data of WMAP which are…

宇宙学与河外天体物理 · 物理学 2011-07-13 T. Ghahramanyan , S. Mirzoyan , E. Poghosian , G. Yegorian

The Cosmic Microwave Background (CMB) is an abundant source of cosmological information. However, this information is encoded in non-trivial ways in a signal that is difficult to observe. The resulting challenges in extracting this…

天体物理学 · 物理学 2014-10-13 Benjamin D. Wandelt

We investigate the statistics of the cosmic microwave background using the Kolmogorov-Smirnov test. We show that, when we correctly de-correlate the data, the partition function of the Kolmogorov stochasticity parameter is compatible with…

宇宙学与河外天体物理 · 物理学 2012-11-01 Mona Frommert , Ruth Durrer , Jérôme Michaud

The Kolmogorov stochasticity parameter is shown to act as a tool to detect point sources in the cosmic microwave background (CMB) radiation temperature maps. Kolmogorov CMB map constructed for the WMAP's 7-year datasets reveals tiny…

宇宙学与河外天体物理 · 物理学 2015-05-18 V. G. Gurzadyan , A. L. Kashin , H. G. Khachatryan , A. A. Kocharyan , E. Poghosian , D. Vetrugno , G. Yegorian

We discuss the algorithmic information approach to the analysis of the observational data on the Universe. Kolmogorov complexity is proposed as a descriptor of the Cosmic Microwave Background (CMB) radiation maps. An algorithm of…

天体物理学 · 物理学 2017-08-23 V. G. Gurzadyan

With polarization of the cosmic microwave background (CMB) now detected, and confirmed by several independent experiments, the next goal is to characterise accurately its statistical properties. In these lecture notes we review the physical…

天体物理学 · 物理学 2018-05-02 Anthony Challinor

The polarization of the Cosmic Microwave Background (CMB)is a powerful observational tool at hand for modern cosmology. It allows to break the degeneracy of fundamental cosmological parameters one cannot obtain using only anisotropy data…

天体物理学 · 物理学 2009-11-07 M. V. Sazhin , G. Sironi , O. S. Khovanskaya

The data from Cosmic Microwave Background (CMB) experiments are becoming more complex with each new experiment. A consistent way of analysing these data sets is required so that direct comparison is possible between the various experimental…

天体物理学 · 物理学 2007-05-23 A. W. Jones

An enormous amount of observations on Cosmic Microwave Background radiation has been collected in the last decade, and much more data are expected in the near future from planned or operating satellite missions. These datasets are a…

应用统计 · 统计学 2009-05-15 Paolo Cabella , Domenico Marinucci

The information theory approach is suggested to the Cosmic Microwave Background (CMB) problem for negatively curved homogeneous and isotropic Universe. Namely, the Kolmogorov complexity of anisotropy of spots in CMB sky maps is proposed as…

天体物理学 · 物理学 2009-10-31 V. G. Gurzadyan

Observations of the Cosmic Microwave Background (CMB) are discussed, with particular emphasis on current ground-based experiments and on future satellite, balloon and interferometer experiments. Observational techniques and the effects of…

天体物理学 · 物理学 2009-10-31 A. N. Lasenby , A. W. Jones , Y. Dabrowski

We describe the subject of Cosmic Microwave Background (CMB) analysis - its past, present and future. The theory of Gaussian primary anisotropies, those arising from linear physics operating in the early Universe, is in reasonably good…

天体物理学 · 物理学 2010-05-12 J. Richard Bond , Robert G. Crittenden

This paper covers several techniques of intercomparison of Cosmic Microwave Background (CMB) anisotropy experiments and models of structure formation. It presents the constraints on several cosmological parameters using current CMB…

天体物理学 · 物理学 2007-05-23 Graca Rocha

Anisotropies in the Cosmic Microwave Background (CMB) contain a wealth of information about the past history of the universe and the present values of cosmological parameters. I ouline some of the theoretical advances of the last few years.…

天体物理学 · 物理学 2007-05-23 Scott Dodelson

Much recent work on the cosmic microwave background (CMB) has focussed on the angular power spectrum of temperature anisotropies and particularly on the recovery of cosmological parameters from acoustic peaks in the power spectrum. However,…

天体物理学 · 物理学 2007-05-23 Marc Kamionkowski

We review the current status of the cosmic microwave background (CMB) radiation, including a brief discussion of some basic theoretical aspects as well as a summary of anisotropy detections and CMB experiments. We focus on the description…

天体物理学 · 物理学 2011-05-10 R. B. Barreiro

Astrophysical and cosmological signals such as the cosmic microwave background radiation, as observed, typically contain contributions of different components, and their statistical properties can be used to distinguish one from the other.…

宇宙学与河外天体物理 · 物理学 2015-05-28 V. G. Gurzadyan , T. Ghahramanyan , S. Sargsyan

We present a new, semi-analytic framework for estimating the level of residuals present in CMB maps derived from multi-frequency Cosmic Microwave Background (CMB) data and forecasting their impact on cosmological parameters. The data are…

宇宙学与河外天体物理 · 物理学 2016-11-02 Radek Stompor , Josquin Errard , Davide Poletti

The polarization of the Cosmic Microwave Background (CMB)is a powerful observational tool at hand for modern cosmology. It allows to break the degeneracy of fundamental cosmological parameters one cannot obtain using only anisotropy data…

天体物理学 · 物理学 2007-05-23 M. V. Sazhin , G. Sironi , O. S. Khovanskaya

Most of the cosmological information extracted from the CMB has been obtained through the power spectrum, however there is much more to be learnt from the statistical distribution of the temperature random field. We review some recent…

天体物理学 · 物理学 2015-06-24 Enrique Martinez-Gonzalez
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