Implications of the binary coalescence events found in O1 and O2 for the stochastic background of gravitational events
arXiv:1908.11073
Abstract
The Advanced LIGO and Advanced Virgo detectors have commenced observations. Gravitational waves from the merger of binary black hole systems and a binary neutron star system have been observed. A major goal for LIGO and Virgo is to detect or set limits on a stochastic background of gravitational waves. A stochastic background of gravitational waves is expected to arise from a superposition of a large number of unresolved cosmological and/or astrophysical sources. A cosmologically produced background would carry unique signatures from the earliest epochs in the evolution of the Universe. Similarly, an astrophysical background would provide information about the astrophysical sources that generated it. The observation of gravitational waves from compact binary mergers implies that there will be a stochastic background from these sources that could be observed by Advanced LIGO and Advanced Virgo in the coming years. The LIGO and Virgo search for a stochastic background should probe interesting regions of the parameter space for numerous astrophysical and cosmological models. Presented here is an outline of LIGO and Virgo's search strategies for a stochastic background of gravitational waves, including the search for gravitational wave polarizations outside of what is predicted from general relativity. Also discussed is how global electromagnetic noise (from the Schumann resonances) could affect this search; possible strategies to monitor and subtract this potential source of correlated noise in a the global detector network are explained. The results from Advanced LIGO's observing runs O1 and O2 will be presented, along with the implications of the gravitational wave detections. The future goals for Advanced LIGO and Advanced Virgo will be explained.
Contribution to the 2019 Gravitation session of the 54th Rencontres de Moriond
References in corpus (19)
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- Advanced Virgo: a 2nd generation interferometric gravitational wave detector
- The Confrontation between General Relativity and Experiment
- GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs
- LIGO: The Laser Interferometer Gravitational-Wave Observatory
- Binary Black Hole Population Properties Inferred from the First and Second Observing Runs of Advanced LIGO and Advanced Virgo
- Tests of General Relativity with the Binary Black Hole Signals from the LIGO-Virgo Catalog GWTC-1
- Tests of General Relativity with GW170817
- Search for the isotropic stochastic background using data from Advanced LIGO's second observing run
- Stochastic Gravitational Wave Backgrounds
- Gravitational-Wave Stochastic Background from Kinks and Cusps on Cosmic Strings
- Directional limits on persistent gravitational waves from Advanced LIGO's first observing run
- Improved Upper Limits on the Stochastic Gravitational-Wave Background from 2009-2010 LIGO and Virgo Data
- Upper limit map of a background of gravitational waves
- Correlated noise in networks of gravitational-wave detectors: subtraction and mitigation
- Gravitational Waves from the First Stars
- Searching for stochastic gravitational waves using data from the two co-located LIGO Hanford detectors
- Gravitational wave background from rotating neutron stars
- Globally coherent short duration magnetic field transients and their effect on ground based gravitational-wave detectors