Detecting Relic Gravitational Waves in the CMB: Comparison of Planck and Ground-based Experiments

Abstract

We compare the detection abilities for the relic gravitational waves by two kinds of forthcoming cosmic microwave background radiation (CMB) experiments, space-based Planck satellite and the various ground-based experiments. Comparing with the ground-based experiments, Planck satellite can observe all the CMB power spectra in all the multipole range, but having much larger instrumental noises. We find that, for the uncertainty of the tensor-to-scalar ratio $\Delta r$, PolarBear (II) as a typical ground-based experiment can give much smaller value than Planck satellite. However, for the uncertainty of the spectral index $\Delta n_t$, Planck can give the similar result with PolarBear (II). If combining these two experiments, the value of $\Delta n_t$ can be reduced by a factor 2. For the model with $r=0.1$, the constraint $\Delta n_t=0.10$ is expected to be achieved, which provides an excellent opportunity to study the physics in the very early universe. We also find the observation in the largest scale ($\ell <20$) is very important for constraining the spectral index $n_t$. So it is necessary to combine the observations of the future space-based and ground-based CMB experiments to determine the relic gravitational waves.

arXiv comment8 pages, 9 figures, 6 tables

References in corpus (44)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Particle Physics Models of Inflation and the Cosmological Density Perturbation
• An All-Sky Analysis of Polarization in the Microwave Background
• Weak Gravitational Lensing of the CMB
• Statistics of Cosmic Microwave Background Polarization
• Signature of Gravity Waves in Polarization of the Microwave Background
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Angular Power Spectra
• Probing the early universe with inflationary gravitational waves
• Improved Calculation of the Primordial Gravitational Wave Spectrum in the Standard Model
• Probing reheating temperature of the universe with gravitational wave background
• Cosmic Microwave Background Fluctuations from Gravitational Waves: An Analytic Approach
• Tensor Modes from a Primordial Hagedorn Phase of String Cosmology
• DASI Three-Year Cosmic Microwave Background Polarization Results
• Cosmological Parameters from the 2003 flight of BOOMERANG
• Second and third season QUaD CMB temperature and polarization power spectra
• Probing the equation of state of the early universe with a space laser interferometer
• Relic Gravitational Waves and Cosmology
• Relic gravitational waves and their detection
• Space laser interferometers can determine the thermal history of the early Universe
• Relic Gravitational Waves in the Accelerating Universe
• Large Angular Scale Polarization of the Cosmic Microwave Background and the Feasibility of its Detection
• Imprints of Relic Gravitational Waves in Cosmic Microwave Background Radiation
• Cosmological footprints of loop quantum gravity
• Analytic approach to the CMB polarizations generated by relic gravitational waves
• New Measurements of Fine-Scale CMB Polarization Power Spectra from CAPMAP at Both 40 and 90 GHz
• Cosmological Perturbations of Quantum-Mechanical Origin and Anisotropy of the Microwave Background
• Structure of Primordial Gravitational Waves Spectrum in a Double Inflationary Model
• Relic Gravitational Waves and Their Detection
• Stochastic backgrounds of relic gravitons, T$\Lambda$CDM paradigm and the stiff ages
• Observability of secondary Doppler peaks in the CMBR power spectrum by experiments with small fields
• Polarization of the Microwave Background in Inflationary Cosmology
• Deciphering Inflation with Gravitational Waves: Cosmic Microwave Background Polarization vs. Direct Detection with Laser Interferometers
• Scientific optimization of a ground-based CMB polarization experiment
• Analytic Spectra of CMB Anisotropies and Polarization Generated by Relic Gravitational Waves with Modification due to Neutrino Free-Streaming
• Detecting relic gravitational waves in the CMB: Optimal parameters and their constraints
• On the road to discovery of relic gravitational waves: The TE and BB Correlations in the cosmic microwave background radiation
• Cosmological Rotation of Quantum-Mechanical Origin and Anisotropy of the Microwave Background
• The Polarization of the Cosmic Microwave Background Due to Primordial Gravitational Waves
• Detecting relic gravitational waves in the CMB: Comparison of different methods
• Improved calculation of relic gravitational waves
• PAPPA: Primordial Anisotropy Polarization Pathfinder Array
• Relic Gravitational Waves And CMB Polarization In The Accelerating Universe
• CMB observations from the CBI and VSA: A comparison of coincident maps and parameter estimation methods

Cited by in corpus (13)

• Constraints of relic gravitational waves by Pulsar Timing Array: Forecasts for the FAST and SKA projects
• Relic Gravitational Waves with A Running Spectral Index and Its Constraints at High Frequencies
• Separating E and B types of polarization on an incomplete sky
• Detecting relics of a thermal gravitational wave background in the early Universe
• Constraints on standard and non-standard early Universe models from CMB B-mode polarization
• Optimizing future experimental probes of inflation
• Relic gravitational waves in the light of 7-year Wilkinson Microwave Anisotropy Probe data and improved prospects for the Planck mission
• The Degeneracy Problem in Non-Canonical Inflation
• Testing inflationary consistency relations by the potential CMB observations
• Detection of relic gravitational waves in the CMB: Prospects for CMBPol mission
• Compressible hydromagnetic nonlinearities in the predecoupling plasma
• On the prior dependence of constraints on the tensor-to-scalar ratio
• Tensor Tilt from Primordial B-modes