An Exascale Challenge for Radio Astronomy

In five years, astronomers will break ground on the most ambitious radio telescope yet: the internationally-backed, 1.5-billion-euro Square Kilometer Array (SKA). When it comes online in 2024, the network of roughly 3,000 dishes and thousands of smaller antennas will be linked by interferometry to form one big telescope, with an effective collecting area of a square kilometer. Astronomers have big plans for the SKA. The telescope is expected to provide a new window into the lives of the universe’s first stars , reveal more details on the effect of dark matter and dark energy on the universe’s expansion, and uncover many more pulsars , spinning stellar remnants with clockwork-like signals that could be used to confirm the existence of gravitational waves. That is, of course, if astronomers and engineers can figure out how to build it. Construction is set to begin in 2017 (i...

Full article: http://spectrum.ieee.org/tech-talk/aerospace/astrophysics...

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