Detection of relic gravitational waves in the CMB: prospects for CMBPol mission

2011/02/24 by Wen Zhao
Earth and Planetary Sciences · Physics and Astronomy · #Astronomy #Astrophysics #COSMIC cancer database #Cosmic background radiation #Cosmic microwave background #Cosmology and Gravitation Theories #Galaxy #Geophysics and Gravity Measurements #Gravitation #Gravitational lens #Gravitational wave #Optics #Physics #Radio Astronomy Observations and Technology #Redshift #Scalar (mathematics) #Tensor (intrinsic definition) #astro-ph.CO #gr-qc #hep-ph #hep-th

paper · pdf · doi:10.1088/1475-7516/2011/03/007

published as JCAP 1103:007,2011 · 26 pages, 19 figures, 4 tables; JCAP in press

arxiv created 2011/02/24 · openalex publication_date 2011/03/02 · arxiv updated 2011/11/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

Detection of relic gravitational waves, through their imprint in the cosmic microwave background radiation, is one of the most important tasks for the planned CMBPol mission. In the simplest viable theoretical models the gravitational wave background is characterized by two parameters, the tensor-to-scalar ratio r and the tensor spectral index n t . In this paper, we analyze the potential joint constraints on these two parameters, r and n t , using the potential observations of the CMBPol mission, which is expected to detect the relic gravitational waves if r ≳0.001. The influence of the contaminations, including cosmic weak lensing, various foreground emissions, and systematical errors, is discussed.

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