Where is the next gravity wave detection?

Thanks PhysBang, nice stuff!

 

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http://apod.nasa.gov/apod/astropix.html

2016 June 15

GW151226: A Second Confirmed Source of Gravitational Radiation
Illustration Credit: LIGO, NSF
Explanation: A new sky is becoming visible. When you look up, you see the sky as it appears in light --electromagnetic radiation. But just over the past year, humanity has begun to see our once-familiar sky as it appears in a different type of radiation -- gravitational radiation. Today, the LIGO collaboration is reporting the detection of GW151226, the second confirmed flash of gravitational radiation after GW150914, the historic first detection registered three months earlier. As its name implies, GW151226 was recorded in late December of 2015. It was detected simultaneously by both LIGO facilities in Washington and Louisiana,USA. In the featured video, an animated plot demonstrates how the frequency of GW151226 changed with time during measurement by the Hanford, Washington detector. This GW-emitting system is best fit by two merging black holes with initial masses of about 14 and 8 solar masses at a redshift of roughly 0.09, meaning, if correct, that it took roughly 1.4 billion years for this radiation to reach us. Note that the brightness andfrequency -- here mapped into sound -- of the gravitational radiation peaks during the last second of the black hole merger. As LIGO continues to operate, as its sensitivity continues to increase, and as other gravitational radiation detectors come online in the next few years, humanity's new view of the sky will surely change humanity's understanding of the universe.

 

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https://www.advancedligo.mit.edu/
Advanced LIGO News

On June 15, 2016, LIGO announced the second detection of a gravitational wave signal, GW151226, from the inspiral and merger of a pair of black holes. The detection occurred on December 26, 2015 near the conclusion of LIGO's O1 data run. The signal showed the characteristic "chirp" behavior that the LIGO-Virgo collaboration observed in the previous detection, GW150914; the signal dynamics and the mass estimates of the merging bodies point to black holes. Unlike the black hole merger GW150914, which appeared in LIGO's detectors for about eight wave cycles over a fraction of a second In September 2015, GW151226 persisted for 55 wave cycles that spanned approximately one second. The signal produced a network signal-to-noise ratio of 13. It was identified within 70 seconds of arrival by an online matched-filter search that targets binary coalescences.

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Read more at the LIGO Laboratory and LIGO Scientific Collaboration websites. (Image credit: SXS Collaboration/www.black-holes.org.)

 

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http://physics.aps.org/articles/v9/68
“did not leap out of the data,” says Sarah Caudill, a member of the LIGO team from the University of Wisconsin in Milwaukee. It became evident only after careful filtering and analysis of the data.

 

Here are also four papers essentially searches for data of possible optical counterpart [Gamma ray incidents] associated with these latest findings......

http://arxiv.org/abs/1606.04901

http://arxiv.org/abs/1606.04538

http://arxiv.org/abs/1606.04574

http://arxiv.org/abs/1606.04795

Nothing substantial found supporting the GR BH modelling against any possible exotic alternative.