The stochastic background from cosmic (super)strings: popcorn and (Gaussian) continuous regimes

Abstract

In the era of the next generation of gravitational wave experiments a stochastic background from cusps of cosmic (super)strings is expected to be probed and, if not detected, to be significantly constrained. A popcorn-like background can be, for part of the parameter space, as pronounced as the (Gaussian) continuous contribution from unresolved sources that overlap in frequency and time. We study both contributions from unresolved cosmic string cusps over a range of frequencies relevant to ground based interferometers, such as LIGO/Virgo second generation (AdLV) and Einstein Telescope (ET) third generation detectors, the space antenna LISA and Pulsar Timing Arrays (PTA). We compute the sensitivity (at $2\sigma$ level) in the parameter space for AdLV, ET, LISA and PTA. We conclude that the popcorn regime is complementary to the continuous background. Its detection could therefore enhance confidence in a stochastic background detection and possibly help determine fundamental string parameters such as the string tension and the reconnection probability.

21 pages, 11 figures ; revised version after correction of a typo in eq. 4.1

References in corpus (7)

• Upper bounds on the low-frequency stochastic gravitational wave background from pulsar timing observations: current limits and future prospects
• Gravitational wave stochastic background from cosmic (super)strings
• Gravitational wave bursts from cosmic (super)strings: Quantitative analysis and constraints
• Detection methods for non-Gaussian gravitational wave stochastic backgrounds
• Cosmic String Loops, Large and Small
• Detection regimes of the cosmological gravitational wave background from astrophysical sources
• Non-Gaussianity analysis of GW background made by short-duration burst signals

Cited by in corpus (30)

• Cosmological Backgrounds of Gravitational Waves and eLISA/NGO: Phase Transitions, Cosmic Strings and Other Sources
• Cosmology with the Laser Interferometer Space Antenna
• The number of cosmic string loops
• Probing the gravitational wave background from cosmic strings with LISA
• Digging deeper: Observing primordial gravitational waves below the binary black hole produced stochastic background
• Beyond the Standard Models with Cosmic Strings
• Anisotropies in the stochastic gravitational-wave background: Formalism and the cosmic string case
• Subtracting compact binary foreground sources to reveal primordial gravitational-wave backgrounds
• Probing non-Gaussian Stochastic Gravitational Wave Backgrounds with LISA
• Forecast constraints on cosmic string parameters from gravitational wave direct detection experiments
• Cylindrical Systems in General Relativity
• BSM with Cosmic Strings: Heavy, up to EeV mass, Unstable Particles
• A Mock Data and Science Challenge for Detecting an Astrophysical Stochastic Gravitational-Wave Background with Advanced LIGO and Advanced Virgo
• Subtracting Compact Binary Foregrounds to Search for Subdominant Gravitational-Wave Backgrounds in Next-Generation Ground-Based Observatories
• Cosmic string loop production functions
• Second Einstein Telescope Mock Data and Science Challenge: Low Frequency Binary Neutron Star Data Analysis
• Measuring the non-Gaussian stochastic gravitational-wave background: a method for realistic interferometer data
• A Semi-Parametric Approach to the Detection of Non-Gaussian Gravitational Wave Stochastic Backgrounds
• Testing Primordial Black Holes with multi-band observations of the stochastic gravitational wave background
• Targeting supermassive black hole binaries and gravitational wave sources for the pulsar timing array
• Anisotropies in the gravitational wave background as a probe of the cosmic string network
• Tracking the origin of black holes with the stochastic gravitational wave background popcorn signal
• Cosmic string gravitational waves from global $U(1{)}_{B-L}$ symmetry breaking as a probe of the type I seesaw scale
• Detecting non-Gaussian gravitational wave backgrounds: a unified framework
• Gravitational Wave Bursts from Cosmic String Cusps and Pseudocusps
• Searching for cosmological stochastic backgrounds by notching out resolvable compact binary foregrounds with next-generation gravitational-wave detectors
• A New Window into Stochastic Gravitational Wave Background
• Two-Step Procedure to Detect Cosmological Gravitational Wave Backgrounds with Next-Generation Terrestrial Gravitational-Wave Detectors
• Cusps and pseudo-cusps in strings with Y-junctions
• Measuring the anisotropies in astrophysical and cosmological gravitational-wave backgrounds with Taiji and LISA networks