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Journal article
The Microwave Background Bispectrum, Paper II: A Probe of the Low Redshift Universe
Physical review D Particles and fields, v 59, 103002
23 Apr 1999
Abstract
Gravitational fluctuations along the line-of-sight from the surface of last scatter to the observer distort the microwave background in several related ways: The fluctuations deflect the photon path (gravitational lensing), the decay of the gravitational potential produces additional fluctuations (ISW effect) and scattering off of hot gas in clusters produce additional fluctuations (Sunyaev-Zel'dovich effect). Even if the initial fluctuations generated at the surface of last scatter were Gaussian, the combination of these effects produce non-Gaussian features in the microwave sky. We discuss the microwave bispectrum as a tool for measuring a studying this signal. For MAP, we estimate that these measurements will enable us to determine the fraction of ionized gas and to probe the time evolution of the gravitational potential.
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Details
- Title
- The Microwave Background Bispectrum, Paper II: A Probe of the Low Redshift Universe
- Creators
- David M Goldberg - Princeton UniversityDavid N Spergel - Princeton University
- Publication Details
- Physical review D Particles and fields, v 59, 103002
- Publisher
- Cold Spring Harbor Press
- Number of pages
- 6
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000080442000010
- Scopus ID
- 2-s2.0-17044434162
- Other Identifier
- 991019296758904721
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Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Astronomy & Astrophysics
- Physics, Particles & Fields