Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale Structure
The most direct probe of non-Gaussian initial conditions has come from bispectrum measurements of temperature fluctuations in the Cosmic Microwave Background and of the matter and galaxy distribution at large scales. Such bispectrum estimators are expected to continue to provide the best constraints...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | Advances in Astronomy |
| Online Access: | http://dx.doi.org/10.1155/2010/980523 |
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| _version_ | 1849396313237487616 |
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| author | Michele Liguori Emiliano Sefusatti James R. Fergusson E. P. S. Shellard |
| author_facet | Michele Liguori Emiliano Sefusatti James R. Fergusson E. P. S. Shellard |
| author_sort | Michele Liguori |
| collection | DOAJ |
| description | The most direct probe of non-Gaussian initial conditions has come from bispectrum measurements of temperature fluctuations in the Cosmic Microwave Background and of the matter and galaxy distribution at large scales. Such bispectrum estimators are expected to continue to provide the best constraints on the non-Gaussian parameters in future observations. We review and compare the theoretical and observational problems, current results, and future prospects for the detection of a nonvanishing primordial component in the bispectrum of the Cosmic Microwave Background and large-scale structure, and the relation to specific predictions from different inflationary models. |
| format | Article |
| id | doaj-art-b4bbb04bdd2a4df9af5d0dd6ac12159c |
| institution | Kabale University |
| issn | 1687-7969 1687-7977 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Astronomy |
| spelling | doaj-art-b4bbb04bdd2a4df9af5d0dd6ac12159c2025-08-20T03:39:22ZengWileyAdvances in Astronomy1687-79691687-79772010-01-01201010.1155/2010/980523980523Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale StructureMichele Liguori0Emiliano Sefusatti1James R. Fergusson2E. P. S. Shellard3Department of Applied Mathematics and Theoretical Physics, Centre for Theoretical Cosmology, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, UKInstitut de Physique Théorique, Commissariat à l'Énergie Atomique, 91191 Gif-sur-Yvette, FranceDepartment of Applied Mathematics and Theoretical Physics, Centre for Theoretical Cosmology, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, UKDepartment of Applied Mathematics and Theoretical Physics, Centre for Theoretical Cosmology, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, UKThe most direct probe of non-Gaussian initial conditions has come from bispectrum measurements of temperature fluctuations in the Cosmic Microwave Background and of the matter and galaxy distribution at large scales. Such bispectrum estimators are expected to continue to provide the best constraints on the non-Gaussian parameters in future observations. We review and compare the theoretical and observational problems, current results, and future prospects for the detection of a nonvanishing primordial component in the bispectrum of the Cosmic Microwave Background and large-scale structure, and the relation to specific predictions from different inflationary models.http://dx.doi.org/10.1155/2010/980523 |
| spellingShingle | Michele Liguori Emiliano Sefusatti James R. Fergusson E. P. S. Shellard Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale Structure Advances in Astronomy |
| title | Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale Structure |
| title_full | Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale Structure |
| title_fullStr | Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale Structure |
| title_full_unstemmed | Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale Structure |
| title_short | Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale Structure |
| title_sort | primordial non gaussianity and bispectrum measurements in the cosmic microwave background and large scale structure |
| url | http://dx.doi.org/10.1155/2010/980523 |
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