麻豆直播

Astrophysicists, telescopes, supercomputers, and software engineers have joined forces to search for signals from the early Universe.

The team from the International Centre for Radio Astronomy Research (ICRAR), the Pawsey Supercomputing Centre and DownUnder GeoSolutions (DUG), used hundreds of hours of observations from the Murchison Widefield Array (MWA) radio telescope collected over five years.

鈥淲e鈥檙e looking for the first stars and galaxies that formed after the Big Bang almost 13 billion years ago,鈥� said Associate Professor Cathryn Trott, from the 麻豆直播 node of ICRAR and the ARC Centre of Excellence for All-Sky Astrophysics in 3D (ASTRO 3D).

鈥淭he signals we鈥檙e looking for have travelled through the vast and expanding Universe for billions of years and are incredibly weak.鈥�

鈥淎fter their long journey, they wash over the Earth as low frequency radio waves, which can be easily drowned out by the radio noise we humans make and by the radio hum of the rest of the Universe.鈥�

The MWA is located in one of the most radio-quiet locations in the world, at CSIRO鈥檚 Murchison Radio-astronomy Observatory in outback Western Australia.

It is a precursor to the $A2+ billion Square Kilometre Array radio telescope that will be built in Australia and South Africa over the next decade. By studying the early Universe with the MWA, we can better understand how it evolved into the one we see today, providing a clear path forward to the Square Kilometre Array (SKA) coming online in a few years.

The project involves an enormous 200 terabytes of data. This is roughly the same as downloading all 73 episodes of Game of Thrones 1,800 times.

The data travelled from the telescope to the Pawsey Supercomputing Centre in Perth, one of Australia鈥檚 tier-1 national high performance computing facilities and a long-standing and successful joint venture of CSIRO and WA鈥檚 four public universities, where they were stored and processed in painstaking fashion to extract the signals the team were searching for.

Pawsey Director Mark Stickells said that this is another example of great scientific collaboration that positions WA as an important research hub. 鈥淩adio astronomy is a key research domain supported by Pawsey and this industry collaboration strengthens and accelerates the impact of the science undertaken using world-class infrastructure and local expertise鈥�.

鈥淭he Pawsey Supercomputing Centre is an essential part of the MWA experimental infrastructure and plays an important role in supporting Australia鈥檚 efforts to build the SKA in WA.鈥�

Of the 700 hours of observations sent to Pawsey from the telescope, 450 hours were selected for further processing.

The data was transferred to DUG鈥檚 supercomputer in West Perth, where their software engineering team optimised the processing algorithms and delivered the processed data in record time.

DUG is a technology company, with deep roots in software development and big data processing in the exploration for oil and gas. From its humble beginnings in a shed in Subiaco, it now owns and operates some of the largest computational systems in the world and provides high performance computing as a service (HPCaaS) through its DUG McCloud offering.

The WA company runs a 10 PFlop supercomputer in Perth, with a total compute capacity of 30 Pflop in multiple locations around the world.

“We feel privileged to be involved in this incredibly interesting project,鈥� said DUG Founder and Managing Director, Matt Lamont.

鈥淒UG is comprised primarily of physicists and mathematicians focussed on developing algorithms and processing data on our own high-performance聽computer network,鈥� he said.

鈥淔or the past 15 years we鈥檝e been solving big data problems for the Oil and Gas Industry and now we鈥檙e branching out to work with new users looking for affordable supercomputing solutions and support to get their code up and running quickly.鈥�

ICRAR Deputy Director Professor Steven Tingay said the collaborative effort really highlighted some of WA鈥檚 key strengths.

鈥淎t one end we have an innovative telescope that鈥檚 been operating in the Mid-West for the past six years, and at the other we have Australia鈥檚 investment in its high-performance computing network,鈥� he said.

鈥淚n between, we have some of the brightest minds in astrophysics and supercomputing working with DUG, a world-leading software and computing company.鈥�

鈥淭he fact that all of this has grown up in Western Australia is evidence that we can harness the best of innovation in academia and industry and do our part to fuel WA鈥檚 economic future.鈥�

鈥楧eep multi-redshift limits on Epoch of Reionisation 21 cm Power Spectra from Four Seasons of Murchison Widefield Array Observations鈥�, was published in the Monthly Notices of the Royal Astronomical Society on March 24th, 2020.