lpetrich
Contributor
LIGO may have spotted a black hole-neutron star merger | Ars Technica
We have gotten to the point where we are seeing so many events that most of them are no longer worth writing a paper about each one individually. So expect papers about unusual events or else papers about the statistical properties of several events. Much like what has happened to exoplanets. The first ones had individual papers, and more recent papers have been about statistics of them and about unusual ones.
The active detectors: LSC - LIGO Scientific Collaboration and Virgo Website
An up-and-coming one is KAGRA in Japan: KAGRA Large-scale Cryogenic Graviationai wave Telescope Project Japan’ s pioneering detector set to join hunt for gravitational waves A new gravitational wave detector is almost ready to join the search | Science News [1901.03569] First cryogenic test operation of underground km-scale gravitational-wave observatory KAGRA
What we have seen so far:
List of gravitational wave observations and an announcement of GWTC-1: A New Catalog of Gravitational-Wave Detections
What next? Statistical properties of G-wave events is an obvious one. How well do the inferred black-hole masses fit the statistics of massive stars? Another one is polarization of G-waves. Out of the six possible polarization combined directions, GR predicts only two components, with some alternatives predicting more components. So with three or more detectors, we can get a test of GR. BTW, these two components are much like the two components out of the three possible of electromagnetic-wave polarization, and as with EM, one can get linear, elliptical, and circular polarizations of G-waves.
The three are the two LIGO detectors and the one VIRGO detector.
We have gotten to the point where we are seeing so many events that most of them are no longer worth writing a paper about each one individually. So expect papers about unusual events or else papers about the statistical properties of several events. Much like what has happened to exoplanets. The first ones had individual papers, and more recent papers have been about statistics of them and about unusual ones.
The active detectors: LSC - LIGO Scientific Collaboration and Virgo Website
An up-and-coming one is KAGRA in Japan: KAGRA Large-scale Cryogenic Graviationai wave Telescope Project Japan’ s pioneering detector set to join hunt for gravitational waves A new gravitational wave detector is almost ready to join the search | Science News [1901.03569] First cryogenic test operation of underground km-scale gravitational-wave observatory KAGRA
What we have seen so far:
List of gravitational wave observations and an announcement of GWTC-1: A New Catalog of Gravitational-Wave DetectionsWhat next? Statistical properties of G-wave events is an obvious one. How well do the inferred black-hole masses fit the statistics of massive stars? Another one is polarization of G-waves. Out of the six possible polarization combined directions, GR predicts only two components, with some alternatives predicting more components. So with three or more detectors, we can get a test of GR. BTW, these two components are much like the two components out of the three possible of electromagnetic-wave polarization, and as with EM, one can get linear, elliptical, and circular polarizations of G-waves.