![]() Combinations of these detectors made joint obser-vations from 2002 through 2011, setting upper limits on a variety of gravitational-wave sources while evolving into a global network. This is the first direct detection of gravitational waves and the first observation of a binary black hole merger. Observatory (LIGO) in the United States, and Virgo in Italy. We can be found on the 2nd and 3rd floors of West Bridge Laboratory on the Caltech campus. These observations demonstrate the existence of binary stellar-mass black hole systems. LIGO Livingston Observatory, LIGO Hanford Observatory, Virgo Observatory (Images: Caltech/MIT/LIGO Lab Virgo) Welcome to the home of the Caltech LIGO Laboratory Astrophysics group. All uncertainties define 90% credible intervals. −0.5 M ☉ c 2 radiated in gravitational waves. −4 M ☉, and the final black hole mass is 62 +4 LIGO is designed to open the field of gravitational-wave. Louisiana State University is a participant in this endeavor. The Laser Interferometer Gravitational-Wave Observatory (LIGO) is located in Livingston, Louisiana. In the source frame, the initial black hole masses are 36 +5 This collection features the open access research of the Nobel Prize-winning LIGO project. −180 M pc corresponding to a redshift z = 0.09 +0.03 The source lies at a luminosity distance of 410 +160 The signal was observed with a matched-filter signal-to-noise ratio of 24 and a false alarm rate estimated to be less than 1 event per 203 000 years, equivalent to a significance greater than 5.1 σ. It matches the waveform predicted by general relativity for the inspiral and merger of a pair of black holes and the ringdown of the resulting single black hole. Led by ESA, the LISA mission is a collaboration of ESA, NASA, and an international consortium of scientists. ![]() The signal sweeps upwards in frequency from 35 to 250 Hz with a peak gravitational-wave strain of 1.0 × 10 -21. LISA is a space-based gravitational wave observatory building on the success of LISA Pathfinder and LIGO. ![]() Abstract: On Septemat 09:50:45 UTC the two detectors of the Laser Interferometer Gravitational-Wave Observatory simultaneously observed a transient gravitational-wave signal.
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