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Book Data Analysis of Cosmic Microwave Background Experiments

Download or read book Data Analysis of Cosmic Microwave Background Experiments written by Matthew Edmund Abroe and published by . This book was released on 2004 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Construction  Deployment and Data Analysis of the E and B EXperiment

Download or read book Construction Deployment and Data Analysis of the E and B EXperiment written by Joy Maria Elise Didier-Scapel and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis we report on the construction, deployment and data analysis of EBEX. We review the development of the pointing sensors and software used for real-time attitude determination and control, including pre-flight testing and calibration. We then report on the 2013 long duration flight (LD2013) and review all the major stages of the analysis pipeline used to transform the ~1 TB of raw data into polarized sky maps. We review "LEAP", the software framework developed to support the analysis pipeline. We discuss in detail the novel program developed to reconstruct the attitude post-flight and estimate the effect of attitude errors on measured B-mode signals. We describe the bolometer time-stream cleaning procedure including removing the HWP-synchronous signal, and we detail the map making procedure. Finally we present a novel method to measure and subtract instrumental polarization, after which we show Galaxy and CMB maps.

Book Cosmic Microwave Background Analysis for CAPMAP and Future Experiments

Download or read book Cosmic Microwave Background Analysis for CAPMAP and Future Experiments written by Kendrick M. Smith and published by . This book was released on 2007 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the first half of this thesis, we describe design and implementation of the analysis pipeline for the 2005 observing season of CAPMAP, an experiment to measure CMB polarization on small angular scales using coherent polarimeters and the Lucent 7 meter telescope in Crawford Hill, New Jersey. Although the results of the analysis are not completely finalized, we present partial results obtained from the data, and full results for a full-season simulation, in order to illustrate the measurement that will be obtained.

Book Statistical Analysis of Cosmic Microwave Background Anisotropy

Download or read book Statistical Analysis of Cosmic Microwave Background Anisotropy written by Emory Freeman Bunn and published by . This book was released on 1995 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Data Analysis in Cosmology

Download or read book Data Analysis in Cosmology written by Vicent J. Martinez and published by Springer. This book was released on 2009-07-09 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: The amount of cosmological data has dramatically increased in the past decades due to an unprecedented development of telescopes, detectors and satellites. Efficiently handling and analysing new data of the order of terabytes per day requires not only computer power to be processed but also the development of sophisticated algorithms and pipelines. Aiming at students and researchers the lecture notes in this volume explain in pedagogical manner the best techniques used to extract information from cosmological data, as well as reliable methods that should help us improve our view of the universe.

Book Data Analysis in Cosmology

    Book Details:
  • Author : Vicent J. Martinez
  • Publisher : Springer Science & Business Media
  • Release : 2009-03-15
  • ISBN : 3540239723
  • Pages : 636 pages

Download or read book Data Analysis in Cosmology written by Vicent J. Martinez and published by Springer Science & Business Media. This book was released on 2009-03-15 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: The amount of cosmological data has dramatically increased in the past decades due to an unprecedented development of telescopes, detectors and satellites. Efficiently handling and analysing new data of the order of terabytes per day requires not only computer power to be processed but also the development of sophisticated algorithms and pipelines. Aiming at students and researchers the lecture notes in this volume explain in pedagogical manner the best techniques used to extract information from cosmological data, as well as reliable methods that should help us improve our view of the universe.

Book A Hunt for Cosmic Microwave Background B modes in the Sytematic Contaminants Jungle

Download or read book A Hunt for Cosmic Microwave Background B modes in the Sytematic Contaminants Jungle written by Josquin Errard and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a study of selected instrumental and astrophysical systematics, which may affect the performance of new generation of future observations of the Cosmic Microwave Background (CMB) polarization. It elaborates on their impact on the science goals of those observations and discusses techniques and approaches for their removal. Its focus is on general issues typical of entire classes of experiments, but also on specific problems as encountered in the context of a CMB B-mode experiment, POLARBEAR. The main target of the CMB polarization effort undergoing currently in the field is a detection of the primordial B-modes anisotropies -- a so far undetected signature of the inflationary theories. This would have far-reaching impact on our understanding of the universe but also fundamental laws of physics. Understanding, modelling, and ultimately removal of the systematics are essential steps in any modern CMB analyste pipeline and their successful accomplishment, together with a high instrumental sensitivity, will decide of a final success of the entire effort. In this thesis I first describe optics of typical CMB experiments and introduce a parametrization of instrumental and cross-polarisation affects particularly convenient for the analysis of their impact. Second, I present a model describing the atmospheric contamination and use it to provide some insights about the atmosphere's role and its impact on performance of ground-based experiments. I also outline how it could be used further to improve control of atmospheric effects in the CMB data analysis. Then, I discuss another source of sky systematics -- the polarized astrophysical foregrounds. In this context I present on the one hand a new approach to forecasting performance of the future experiments, which accounts for the presence of the foregrounds, white on the other I propose a framework for optimizing hardware of such experiments to let them achieve better performance. This part of thesis stems from a commun work with dm. F. Stivoli and R. Stompor. I finally present one of the leading CMB polarization experiment POLARBEAR, in which I have been involved in over the course of my PhD studies. I describe its current status and performance as well as selected steps of its data analysis pipeline. In particular, I show methods to estimate some of the parameters introduced for the systematics modeling from simulated data. This work has been performed in collaboration with mernbers of the POLARBEAR team.

Book Data Analysis for the E and B EXperiment and Instrumentation Development for Cosmic Microwave Background Polarimetry

Download or read book Data Analysis for the E and B EXperiment and Instrumentation Development for Cosmic Microwave Background Polarimetry written by Derek Carl Araujo and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In Part II we present recent developments in instrumentation for the next generation of CMB polarimeters. The developments we describe, including advances in lumped-element kinetic inductance detector (LEKID) technology and the development of a hollow-shaft SMB-based motor for use in HWP polarimetry, were motivated in part by the design for a prospective ground-based CMB polarimeter based in Greenland.

Book The Cosmic Microwave Background

Download or read book The Cosmic Microwave Background written by Slobodan Perovic and published by Cambridge University Press. This book was released on 2024-06-30 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explanations of the cosmic microwave background prompt this unique case study of theory building in modern science.

Book Illuminating the Background

    Book Details:
  • Author : Nathan James Miller
  • Publisher :
  • Release : 2012
  • ISBN : 9781267169037
  • Pages : 175 pages

Download or read book Illuminating the Background written by Nathan James Miller and published by . This book was released on 2012 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: The cosmic microwave background provides a wealth of information about the origin and history of the universe. The statistics of the anisotropy and the polarization of the cosmic microwave background, among other things, can tell us about the distribution of matter, the redshift of reionization, and the nature of the primordial fluctuations. From the lensing of cosmic microwave background due to intervening matter, we can extract information about neutrinos and the equation of state of dark energy. A measurement of the large angular scale B-mode polarization has been called the "smoking gun'' of inflation, a theory that describes a possible early rapid expansion of the universe. The focus of current experiments is to measure this B-mode polarization, while several experiments, such as POLARBEAR, are also looking to measure the lensing of the cosmic microwave background. This dissertation will discuss several different topics in cosmic microwave background polarization research. I will make predictions for future experiments and I will also show analysis for two current experiments, POLARBEAR and BICEP. I will show how beam systematics affect the measurement of cosmological parameters and how well we must limit these systematics in order to get unbiased constraints on cosmological parameters for future experiments. I will discuss a novel way of using the temperature-polarization cross-correlation to constrain the amount of inflationary gravitational waves. Through Markov Chain Monte Carlo methods, I will determine how well future experiments will be able to constrain the neutrino masses and their degeneracy parameters. I will show results from current data analysis and calibration being done on the Cedar Flat deployment for the POLARBEAR experiment which is currently being constructed in the Atacama desert in Chile. Finally, I will analyze the claim of detection of cosmological birefringence in the BICEP data and show that there is reason to believe it is due to systematic effects in the data.

Book Data Analysis and Scientific Exploitation of the CMB B modes Experiment  POLARBEAR

Download or read book Data Analysis and Scientific Exploitation of the CMB B modes Experiment POLARBEAR written by Julien Peloton and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last two decades cosmology has been transformed from a data-starved to a data-driven, high precision science.n This transformation happened thanks to improved observational techniques, allowing to collect progressively bigger and more powerful data sets. Studies of the Cosmic Microwave Background (CMB) anisotropies have played, and continue on doing so, a particularly important and impactful role in this process. The huge data sets produced by recent CMB experiments pose new challenges for the field due to their volumes and complexity. Its successful resolution requires combining mathematical, statistical and computational methods aIl of which form a keystone of the modern CMB data analysis. In this thesis, I describe data analysis of the first data set produced by one of the most advanced, current CMB experiments, POLARBEAR and the major results it produced. The POLARBEAR experiment is a leading CMB B-mode polarization experiment aiming at detection and characterization of the so-called B-mode signature of the CMB polarization. This is one of the most exciting topics in the current CMB research, which only just has started yielding new insights onto cosmology in part thanks to the results discussed hereafter. In this thesis I describe first the modern cosmological model, focusing on the physics of the CMB, and in particular its polarization properties, and providing an overview of the past experiments and results. Subsequently, I present the POLARBEAR instrument, data analysis of its first year data set and the scientific results drawn from it, emphasizing my major contributions to the overall effort. In the last chapter, and in the context of the next generation CMB B-mode experiments, I present a more systematic study of the impact of the presence of the so-called E-to-B leakage on the performance forecasts of CMB B-modes experiments, by comparing several methods including the pure pseudospectrum method and the minimum variance quadratic estimator. In particular, I detail how the minimum variance quadratic estimator in the case of azimuthally symmetric patches can be used to estimate efficiently parameters, and I present an efficient implementation based on existing parallel algorithms for computing Spherical Harmonic Transforms.

Book The Cosmic Microwave Background

Download or read book The Cosmic Microwave Background written by Júlio C. Fabris and published by Springer. This book was released on 2016-10-07 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series of texts composing this book is based on the lectures presented during the II José Plínio Baptista School of Cosmology, held in Pedra Azul (Espírito Santo, Brazil) between 9 and 14 March 2014. This II JBPCosmo has been entirely devoted to the problem of understanding theoretical and observational aspects of Cosmic Background Radiation (CMB).The CMB is one of the most important phenomena in Physics and a fundamental probe of our Universe when it was only 400,000 years old. It is an extraordinary laboratory where we can learn from particle physics to cosmology; its discovery in 1965 has been a landmark event in the history of physics.The observations of the anisotropy of the cosmic microwave background radiation through the satellites COBE, WMAP and Planck provided a huge amount of data which are being analyzed in order to discover important informations regarding the composition of our universe and the process of structure formation.

Book Data Analysis of the Cosmic Microwave Background

Download or read book Data Analysis of the Cosmic Microwave Background written by Frode Kristian Hansen and published by . This book was released on 2002 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Measurement of the Cosmic Microwave Background Temperature and Galactic Emission at 8 0 and 8 3 GHZ with the ARCADE 2 Experiment

Download or read book Measurement of the Cosmic Microwave Background Temperature and Galactic Emission at 8 0 and 8 3 GHZ with the ARCADE 2 Experiment written by Jack Edward Singal and published by . This book was released on 2006 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents a measurement of the radiometric temperature of the Cosmic Microwave Background (CMB) and of the intensity of Galactic emission at 8.1 and 8.3 GHz. These are the science results of the first flight of the ARCADE 2 instrument, on which the author's design, fabrication, and data analysis work forms the basis of this dissertation.

Book The Cosmic Microwave Background

Download or read book The Cosmic Microwave Background written by C.H. Lineweaver and published by Springer. This book was released on 2011-09-20 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Study Institute on the Cosmological Background Radiation, Strasbourg, France, May 27-June 7, 1996

Book Measurements of the Cosmic Microwave Background and Foregrounds with the Planck and BOORERanG Experiments

Download or read book Measurements of the Cosmic Microwave Background and Foregrounds with the Planck and BOORERanG Experiments written by Marcella Veneziani and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cosmic Micro wave Background (CMB) is one of the main observables in cosmology. Many experiments are aimed at studying its temperature and polarization fluctuations. Several components. called foregrounds, pollute the CMB signal. Using measurements at multiple frequencies, the foregrounds can be studied and removed from the CMB. In the first part of my thesis I collaborated in the characterization and calibration of the focal plane of the High Frequency Instrument of PLANCK in order to measure the orientation and polarization efficiency of the detectors. Understanding these quantities is very important for the analysis of future PLANCK data, especially for the polarization analysis. In the second part of my thesis I worked on BOOMERanG 2003 (B03) data focusing on the science of foregrounds. At B03 frequencies, the brightest signal besides the CMB is the emission of thermal dust from our own Galaxy. Combining B03 data with other experiments I measured the temperature and spectral index of emissivity of several dust structures. I found two different temperature components, and an inverse correlation between dust temperature and spectral index. The B03 frequencies range is also well suited to study the Sunyaev-Zel'dovich (SZ) effect. The SZ is the inverse Compton scattering of CMB photons by hot electrons in galaxy clusters. I separated the SZ component from the others present in this region and frequency range, produced a multi-frequency power spectrum, and used it to constrain the our understanding of matter fluctuations in the Universe.