Gravitational Radiation is finally detected

William G. Unruh
Event Date and Time: 
Wed, 2016-02-24 19:30 - 21:00
Earth Sciences Building - RM 1013 (2207 Main Mall) UBC
Local Contact: 
Swarn Rai - 604-822-1383 or
Intended Audience: 

In Sept 2015 the 2 LIGO observatories observed gravitational waves emitted during the inspiral and collision of two black holes, each of roughly 30 solar mass, occurring 1.3 billion yrs ago at a distance of 1.3 billion light years. The energy output during this event was colossal, roughly equivalent to that of all stars in the universe during the same period. My talk will discuss this event, explaining what gravitational radiation is, how it is formed, and how it was measured by LIGO. The talk is for the general public - no knowledge of gravity, or of lasers, is assumed.

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