## Wednesday, February 10, 2016

### Gravitational waves

Has the LIGO observatory observed gravitational waves? Rumours have been rife that LIGO (Laser Interference Gravitational Wave observatory) has picked up the signature of gravitational waves   (ripples in space time) arising from a massive cosmic event, the collision of two black holes. Astronomers have been looking for confirmation of the rumoured LIGO events  in the form of an optical flash in three parts of the sky, in the constellation Dorado, as well as in the constellations Aries and Hydra. The last time the classic signature (a chirp') was observed in the LIGO data was in 2010, but it was announced to be a false signal, fake data inserted to ensure that the analysis could, in fact detect a signal. The experiment has scheduled a press conference on 11th February, where they may confirm the observation, (or not!).  More tomorrow,  the entire physics world waits with bated breath. Hopefully, the LIGO spokespersons will not shout April Fool, in February!

Update: February 12th: