Detecting relic gravitational waves in the CMB: Comparison of different methods

2009/02/28 by Wen Zhao, W. Zhao · 19 citations
Mathematics · Physics and Astronomy · #Anisotropy #Astrophysics #Black Holes and Theoretical Physics #Computational physics #Cosmic background radiation #Cosmic microwave background #Cosmology and Gravitation Theories #Gravitational wave #Mathematics #Microwave #Noise (video) #Noise power #Optics #Physics #Planck #Polarization (electrochemistry) #Power (physics) #Pulsars and Gravitational Waves Research #Quantum mechanics #Radiation #Spectral density #Spectral line #Statistics #astro-ph.CO #astro-ph.SR #gr-qc #hep-ph #hep-th

paper · pdf · doi:10.1103/physrevd.79.063003

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 79(6) (American Physical Society) · 37 pages, 7 figures, published version

openalex publication_date 2009/03/09 · arxiv created 2009/03/27 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

In this paper, we discuss the constraint on the relic gravitational waves by both temperature and polarization anisotropies power spectra of cosmic microwave background radiation. Taking into account the instrumental noises of the Planck satellite, we calculate the signal-to-noise ratio S/N by the simulation and the analytic approximation methods. We find that, compared with the BB channel, the value of S/N is much improved in the case where all the power spectra, TT, TE, EE, and BB, are considered. If the noise power spectra of the Planck satellite increase for some reason, the value of S/N in the BB channel is much reduced. However, in the latter case where all the power spectra of cosmic microwave background radiation are considered, the value of S/N is less influenced. We also find that the free parameters A_s, n_s, and n_t have little influence on the value of S/N in both cases.

Citations

• Correlated primordial perturbations in light of CMB and large scale structure data
• Imprints of relic gravitational waves in cosmic microwave background radiation
• Weak Gravitational Lensing of the CMB
• Constraints on the inflationary expansion from three-year WMAP, small scale CMB anisotropies and large scale structure data sets
• Signature of Gravity Waves in the Polarization of the Microwave Background
• Relic gravitational waves in the accelerating Universe
• WMAP normalization of inflationary cosmologies
• Analytic spectra of CMB anisotropies and polarization generated by relic gravitational waves with modification due to neutrino free-streaming
• Cosmic separation of phases
• Polarization pursuers’ guide
• Particle Physics Models of Inflation and the Cosmological Density Perturbation
• RELIC GRAVITATIONAL WAVES AND CMB POLARIZATION IN THE ACCELERATING UNIVERSE
• Cosmic microwave background fluctuations from gravitational waves: An analytic approach
• Three‐YearWilkinson Microwave Anisotropy Probe(WMAP) Observations: Implications for Cosmology
• Prospects for direct detection of primordial gravitational waves
• Stochastic backgrounds of relic gravitons, TΛCDM paradigm and the stiff ages
• Tensor microwave background fluctuations for large multipole order
• CMB temperature polarization correlation and primordial gravitational waves