Long Journey toward the Detection of Gravitational Waves and New Era of Gravitational Wave Astrophysics

Abstract

The gravitational waves were detected directly for the first time on September 14, 2015 by two LIGO detectors at Livingston, Louisiana and Hanford, Washington, USA. Careful analysis revealed that this signal was produced by the last moment of inspiral and merger of two black holes that have been orbiting each other. Since the first detection, several other gravitational wave sources, including one neutron star merger event in August 201,7 have been observed by the LIGO together with Virgo. This article provides a very brief overview of the history toward the understanding the nature of gravitational waves, detectors, types of sources and achievements of the gravitational wave detectors. We then discuss astrophysical implications of the recent detections of black hole and neutron star binaries and provide short term and long term prospects of gravitational wave astronomy.

38 pages, 5 figures, Review article for the Journal of the Korean Physical Society

References in corpus (20)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Multi-messenger Observations of a Binary Neutron Star Merger
• GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence
• An Ordinary Short Gamma-Ray Burst with Extraordinary Implications: Fermi-GBM Detection of GRB 170817A
• GW170608: Observation of a 19-solar-mass Binary Black Hole Coalescence
• Swope Supernova Survey 2017a (SSS17a), the Optical Counterpart to a Gravitational Wave Source
• INTEGRAL Detection of the First Prompt Gamma-Ray Signal Coincident with the Gravitational Wave Event GW170817
• The X-ray counterpart to the gravitational wave event GW 170817
• The Emergence of a Lanthanide-Rich Kilonova Following the Merger of Two Neutron Stars
• A Radio Counterpart to a Neutron Star Merger
• Gravitational waves from scattering of stellar-mass black holes in galactic nuclei
• Gravitational Wave Detection with Atom Interferometry
• The gravitational wave signal from core-collapse supernovae
• Effects of Data Quality Vetoes on a Search for Compact Binary Coalescences in Advanced LIGO's First Observing Run
• Brightening X-ray Emission from GW170817/GRB170817A: Further Evidence for an Outflow
• Recent searches for continuous gravitational waves
• Gravitational waves from compact binaries in post-Newtonian accurate hyperbolic orbits
• Distance and properties of NGC 4993 as the host galaxy of a gravitational wave source, GW170817
• Black Hole Binaries in Galactic Nuclei and Gravitational Wave Sources
• Newtonian-noise cancellation in full-tensor gravitational-wave detectors