Non-Gaussianity and the Cosmic Microwave Background Anisotropies
Joint Authors
Bartolo, N.
Riotto, Antonio
Matarrese, S.
Source
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-68, 68 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-09-22
Country of Publication
Egypt
No. of Pages
68
Main Subjects
Abstract EN
We review in a pedagogical way the present status of the impact of non-Gaussianity (NG) on the cosmic microwave background (CMB) anisotropies.
We first show how to set the initial conditions at second order for the CMB anisotropies when some primordial NG is present.
However, there are many sources of NG in CMB anisotropies, beyond the primordial one, which can contaminate the primordial signal.
We mainly focus on the NG generated from the post inflationary evolution of the CMB anisotropies at second order in perturbation theory at large and small angular scales, such as the ones generated at the recombination epoch.
We show how to derive the equations to study the second-order CMB anisotropies and provide analytical computations to evaluate their contamination to primordial NG (complemented with numerical examples).
We also offer a brief summary of other secondary effects.
This paper requires basic knowledge of the theory of cosmological perturbations at the linear level.
American Psychological Association (APA)
Bartolo, N.& Matarrese, S.& Riotto, Antonio. 2010. Non-Gaussianity and the Cosmic Microwave Background Anisotropies. Advances in Astronomy،Vol. 2010, no. 2010, pp.1-68.
https://search.emarefa.net/detail/BIM-450345
Modern Language Association (MLA)
Bartolo, N.…[et al.]. Non-Gaussianity and the Cosmic Microwave Background Anisotropies. Advances in Astronomy No. 2010 (2010), pp.1-68.
https://search.emarefa.net/detail/BIM-450345
American Medical Association (AMA)
Bartolo, N.& Matarrese, S.& Riotto, Antonio. Non-Gaussianity and the Cosmic Microwave Background Anisotropies. Advances in Astronomy. 2010. Vol. 2010, no. 2010, pp.1-68.
https://search.emarefa.net/detail/BIM-450345
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-450345