Measuring the scalar induced gravitational waves from observations

Abstract

We measure the scalar induced gravitational waves from the cosmic microwave background (CMB) observations and the gravitational wave observations. In the $\Lambda$CDM+$r$ model, we constrain the cosmological parameters within the evolution of the scalar induced gravitational waves by the additional scalar power spectrum. The two special cases called narrow power spectrum and wide power spectrum have influence on the cosmological parameters, especially the combinations of Planck18+BAO+BK15+LISA. We also compare these numerical results from four datasets within LIGO, LISA, IPTA and FAST projects, respectively. The constraints from FAST have a significant impact on tensor-to-scalar ratio.

References in corpus (33)

• Cosmological parameters from CMB and other data: a Monte-Carlo approach
• The 6dF Galaxy Survey: Baryon Acoustic Oscillations and the Local Hubble Constant
• The Clustering of the SDSS DR7 Main Galaxy Sample I: A 4 per cent Distance Measure at z=0.15
• The Five-Hundred-Meter Aperture Spherical Radio Telescope (FAST) Project
• The cosmological gravitational wave background from primordial density perturbations
• Semianalytic Calculation of Gravitational Wave Spectrum Nonlinearly Induced from Primordial Curvature Perturbations
• Sensitivity curves for searches for gravitational-wave backgrounds
• The International Pulsar Timing Array: First Data Release
• Relativistic second-order perturbations of the Einstein-de Sitter Universe
• A Cosmological Signature of the SM Higgs Instability: Gravitational Waves
• Gravitational waves induced by scalar perturbations as probes of the small-scale primordial spectrum
• Gravitational Waves Induced by Scalar Perturbations with a Lognormal Peak
• Induced gravitational waves in a general cosmological background
• Induced gravitational waves as a probe of thermal history of the universe
• Enhancement of Gravitational Waves Induced by Scalar Perturbations due to a Sudden Transition from an Early Matter Era to the Radiation Era
• Observable Spectra of Induced Gravitational Waves from Inflation
• Gravitational Waves Induced by Scalar Perturbations during a Gradual Transition from an Early Matter Era to the Radiation Era
• Gauge Independence of Induced Gravitational Waves
• Scalar Induced Gravitational Waves in Different Gauges
• Constraints on primordial density perturbations from induced gravitational waves
• Log-dependent slope of scalar induced gravitational waves in the infrared regions
• Observable induced gravitational waves from an early matter phase
• Scalar induced gravitational waves in inflation with gravitationally enhanced friction
• Probing Primordial-Black-Hole Dark Matter with Scalar Induced Gravitational Waves
• Gauge dependence of gravitational waves generated from scalar perturbations
• Thermal History of the Early Universe and Primordial Gravitational Waves from Induced Scalar Perturbations
• Approximate gauge independence of the induced gravitational wave spectrum
• On the gauge dependence of gravitational waves generated at second order from scalar perturbations
• Constraints on primordial curvature perturbations from primordial black hole dark matter and secondary gravitational waves
• Gravitational waves: Classification, Methods of detection, Sensitivities, and Sources
• Primordial black holes and secondary gravitational waves from the Higgs field
• Measuring the tilt of primordial gravitational-wave power spectrum from observations
• Measuring the spectral running from cosmic microwave background and primordial black holes

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• Measuring the primordial curvature perturbations from the scalar induced gravitational waves
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