Topic: LIGO announces detection of gravitational waves

Wow.


http://arstechnica.com/science/2016/02/ … nal-waves/


http://www.telegraph.co.uk/news/science … ecade.html


Live stream: https://www.youtube.com/watch?v=c7293kAiPZw


Welcome to the age of gravitational wave astronomy. 1.3 Billion year old gravitational waves from relatively rare events being detected by human hardware... Fucking nuts. Einstein wuz rite. I think this is genuinely one of the most exciting things since Higgs. Most science news is bullshit, but damn.


https://dcc.ligo.org/LIGO-P150914/public


Imagine the software engineering behind this.

On September 14, 2015 at 09:50:45 UTC the two detectors of the Laser Interferometer Gravitational-Wave Observatory simultaneously observed a transient gravitational-wave signal. The signal sweeps upwards in frequency from 35 to 250 Hz with a peak gravitational-wave strain of 1.0 × 10-21. 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. 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 5.1σ. The source lies at a luminosity distance of 410+160-180 Mpc corresponding to a redshift z = 0.09+0.03−0.04. In the source frame, the initial black hole masses are 36+5-4 M☉ and 29+4-4 M☉, and the final black hole mass is 62+4-4 M☉, with 3.0+0.5-0.5 M☉c2 radiated in gravitational waves. All uncertainties define 90% credible intervals. These observations demonstrate the existence of binary stellar-mass black hole systems. This is the first direct detection of gravitational waves and the first observation of a binary black hole merger.

Re: LIGO announces detection of gravitational waves

I wonder what will be the practical effect on research given that nearly all physicists have operated under these assumptions being true anyway.

"Humanity Is Overrated" - Shrek

Re: LIGO announces detection of gravitational waves

Hopefully plenty of funding lol