A Cosmic String Specific Signature on the Cosmic Microwave Background

Abstract

Using an analytical model for the string network we show that the kurtosis of cosmic microwave background (CMB) temperature gradient maps is a good statistic to distinguish between the cosmic string model and inflationary models of structure formation. The difference between the stringy and inflationary value for the kurtosis is inversely proportional to the angular resolution and to the number of strings per Hubble volume of the strings' scaling solution. If strings are indeed responsible for CMB anisotropies then experiments with resolutions of a couple of arcminutes or smaller could determine it using this statistic.

18 pages, 9 figures (available from the authors), BROWN-HET-911 (June 1993), accepted for publ. in Astrophys. J., uses LATEX

References in corpus (2)

• On the Statistics of CMB Fluctuations Induced by Topological Defects
• Topological Defect Models of Structure Formation After the COBE Discovery of CMB Anisotropies

Cited by in corpus (36)

• Cosmic strings
• Topological Defects and Structure Formation
• The Cosmic Microwave Background and Particle Physics
• Seeking String Theory in the Cosmos
• A detail study of defect models for cosmic structure formation
• Search for Cosmic Strings in CMB Anisotropies
• Large Angular Scale CMB Anisotropy Induced by Cosmic Strings
• Detecting Cosmic Strings in the CMB with the Canny Algorithm
• Canny Algorithm, Cosmic Strings and the Cosmic Microwave Background
• Edge Detection, Cosmic Strings and the South Pole Telescope
• A Signature of Cosmic Strings Wakes in the CMB Polarization
• Intermediate Mass Black Hole Seeds from Cosmic String Loops
• Compressed sensing reconstruction of a string signal from interferometric observations of the cosmic microwave background
• Massive black holes at high redshifts from superconducting cosmic strings
• Non-Gaussian Spectra
• The Rise and Fall of the Cosmic String Theory for Cosmological Perturbations
• Topological Defects and Cosmology
• Wavelet domain Bayesian denoising of string signal in the cosmic microwave background
• Lensing and CMB Anisotropies by Cosmic Strings at a Junction
• Multi-Scale Pipeline for the Search of String-Induced CMB Anisotropies
• The Cosmic Microwave Background: State of the Art
• Level Crossing Analysis of Cosmic Microwave Background Radiation: A method for detecting cosmic strings
• Searching for Signatures of Cosmic Superstrings in the CMB
• Gravitational Interactions of Finite Thickness Global Topological Defects with Black Holes
• Peak-peak correlations in the cosmic background radiation from cosmic strings
• Extracting the Signal of Cosmic String Wakes from 21-cm Observations
• Cosmic Microwave Anisotropies from Topological Defects in an Open Universe
• On the Possible Enhancement of the Global $21$-cm Signal at Reionization from the Decay of Cosmic String Cusps
• Topology of the Las Campanas Redshift Survey
• Construction of Cosmic String Induced Temperature Anisotropy Maps with CMBFAST and Statistical Analysis
• Signal of Cosmic Strings in Cross-Correlation of 21-cm Redshift and CMB Polarization Maps
• Searching for Long Strings in CMB Maps
• Spectra and Statistics of Cosmic String Perturbations on the Microwave Background: A Monte Carlo Approach
• Cosmic String Wake Detection using 3D Ridgelet Transformations
• Power Fluctuations in the Wavelet Space: Large-Scale CMB Non-Gaussian Statistics
• Cosmic Microwave Background Radiation Anisotropy Induced by Cosmic Strings