https://www.researchgate.net/publica...P hysics_2016
Open Letter to the Nobel Committee for Physics 2016, W.W. Engelhardt, JET, Max-Planck-Institut für Plasmaphysik. Abstract: The Nobel Committee is informed that according to Professor Karsten Danzmann (Albert Einstein Institut) the LIGO detectors are not calibrated as expected from the statement in the discovery paper: "The detector output is calibrated in strain by measuring its response to test mass motion induced by photon pressure from a modulated calibration laser beam [63]". The claim that gravitational waves have been detected is not substantiated experimentally, since direct calibration data, namely mirror displacement as a function of laser power moving the mirrors, are not published.

Pentcho Valev