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Breakthrough Listen to incorporate the MeerKAT array in its existing search for extraterrestrial signals and technosignatures
SARAO News #02 2018
Breakthrough Listen, the global initiative to seek signs of intelligent life in the Universe – announced today at the International Astronautical Congress the commencement of a major new program with the MeerKAT telescope in partnership with the South African Radio Astronomy Observatory (SARAO).
Breakthrough Listen’s MeerKAT survey will examine a million individual stars – 1000 times the number of targets in any previous search – in the quietest part of the radio spectrum, monitoring for signs of extraterrestrial technology. With the addition of MeerKAT’s observations to its existing surveys, Listen will operate 24 hours a day, seven days a week, in parallel with other surveys.
“Collaborating with MeerKAT will significantly enhance the capabilities of Breakthrough Listen,” said Yuri Milner, founder of the Breakthrough Initiatives. “This is now a truly global project.”
Built and operated by the South African Radio Astronomy Observatory (SARAO), and inaugurated in July 2018, MeerKAT is a powerful array of 64 radio antennas in the remote Karoo of South Africa. By partnering with SARAO, Breakthrough Listen gains access to one of the world’s premier observing facilities at radio wavelengths. Signals from the 64 dishes (each 13.5 meters in diameter) are combined electronically to yield an impressive combination of sensitivity, resolution and field of view on the sky. MeerKAT also serves as a precursor for the Square Kilometre Array, which will expand and enhance the current facility in the coming decades, eventually spanning a million square meters across South Africa and Australia to create by far the world’s largest radio telescope.
The Breakthrough Initiatives’ Executive Director, Pete Worden, commented, “Listen and MeerKAT are developing next-generation technology and techniques that will ultimately lead to proposals for searches with the Square Kilometre Array. This is an exciting moment for SETI and radio astronomy in general.”
Breakthrough Listen’s involvement adds the capability to search for technosignatures – signals that indicate the presence of technology on an alien world, and hence provide evidence that intelligent life exists elsewhere. MeerKAT was constructed in pursuit of a number of key science goals, from surveying distant galaxies, studying explosive events such as supernovae and mapping the distribution of hydrogen gas in the early Universe.
As at other facilities undertaking Listen’s radio search, the new capabilities have been enabled by the latest digital instrumentation installed by scientists and engineers from the University of California, Berkeley SETI Research Center (BSRC). Unlike the case with the Green Bank and Parkes telescopes, however, the Breakthrough Listen team will rarely use MeerKAT as its sole observer. Rather, observations will occur in a commensal mode – at the same time as other astrophysics programs. Using sophisticated processing, Breakthrough Listen scientists will digitally point the telescope at targets of interest. This means that the Breakthrough Listen instrument at MeerKAT will be operating almost continuously, scanning the skies for signs of intelligent life.
“With this new instrument we’ll be able to form many beams at the same time, obtaining high resolution data for multiple objects simultaneously,” said Listen’s Principal Investigator Dr. Andrew Siemion. “This complements and extends our capabilities at other telescopes, enabling us to survey our cosmic neighborhood for technosignatures faster than ever before.”
Prof. Justin Jonas, Chief Technologist at SARAO, said, “We designed MeerKAT to be a flexible instrument that would provide standard interfaces to user-supplied equipment and also allow for commensal observing. It is very satisfying that these two design elements have made the Breakthrough Listen project possible, allowing for a significant expansion of the original MeerKAT functionality.”
“Our new system is a small supercomputer,” explained Dr Griffin Foster, Project Scientist for Breakthrough Listen on MeerKAT. “The powerful Breakthrough Listen hardware will enable us to look for interesting signals in real time and save the relevant data products to our on-site data archive.”
The Breakthrough Listen system on the MeerKAT telescope will have a total input data rate of about 4 terabits per second (4000 gigabits per second), which is about 40 thousand times faster than a typical home internet connection.
Prof. Michael Garrett, Director of the Jodrell Bank Centre for Astrophysics (JBCA) in the United Kingdom (a Breakthrough Listen partner facility) and a co-investigator on Breakthrough’s MeerKAT Program, remarked, “This development represents a step-change for SETI research. Employing a large distributed array of hugely sensitive radio telescopes like MeerKAT is really a no-brainer, offering many advantages over large single dish surveys. The Breakthrough Listen MeerKAT project can be a powerful new tool for SETI with the potential to completely transform the field.”
- Frequencies covered: UHF (580 – 1015 MHz), L-Band (856 – 1712 MHz), S-Band (1600 – 3500 MHz).
- Will survey 750000 stars per year at a maximum distance of 700 light years with a sensitivity sufficient to detect (signal-to-noise 10, 1 Hz spectral resolution) a 2 x 1013 W equivalent isotropic radiated power (Arecibo radar equivalent) transmitter.
Breakthrough Listen is a global astronomical program searching for evidence of technological life beyond Earth. It aims to survey one million nearby stars, the entire galactic plane and 100 nearby galaxies at a wide range of radio and optical bands.
The Breakthrough Initiatives are a suite of scientific and technological programs investigating life in the Universe.
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Big Data Attendees at the one-day work session which was held on 11 July 2017 at the Ministry of Environment, Science, Technology and Innovation in Ghana to kick off the High Performance Computing training programme in Ghana.
Members of the nine SKA African partner countries concluded the Fourth Ministerial Meeting on the SKA in Accra, Ghana by signing a memorandum of understanding to collaborate on radio astronomy.
Minister of Science and Technology Naledi Pandor watches on as the President of the Republic of Ghana, His Excellency Nana Addo Dankwa Akufo-Addo cuts the ribbon at the launch of the Ghana Radio Astronomy Observatory.
The launch of the Ghana Radio Astronomy Observatory was covered 119 times in the media between 23 and 25 August 2017:
In Ghana: 24 times
In South Africa: 36 times
In other African countries: 8 times
Internationally: 51 times
The value of these placements is R6 983 234.17.
Last Updated on November 19, 2018