#02 2018
News
SARAO celebrates the successful completion of the SKA Telescope Manager Critical Design Review
The General Assembly of the International Astronomical Union to be hosted on African soil for the first time in 2024
US Embassy members visit Losberg and Carnarvon
European Union delegation visits SARAO Cape Town office
First cohort of SARAO-sponsored Northern Cape matrics progressing well at university
2017 SARAO bursary beneficiaries progress to second year of tertiary studies
Students from African countries complete third HartRAO AVN training school
Outreach
MeerLICHT telescope inaugurated
SARAO hosts Minister Kubayi-Ngubane and members of Parliamentary Portfolio Committee at Losberg
SARAO hosts Community Information sessions in the Northern Cape
South Africa’s initialling of the SKA Convention and Protocol texts takes place in Rome, Italy
Astronomy in South Africa is profiled at the IAU GA 2018 in Vienna
SARAO staff member leads 2018 NRAO NINE Program
Chinese Vice Minister for Science and Technology visits SARAO offices
Ghana and South Africa celebrate first success of African network of telescopes
Servitude establishment program
Latest developments on the land acquisitions programme
SARAO Human Capital Development Programme – Creating excellence in radio astronomy
SARAO Tech News
Ghana marks first spot on the AVN
Standing on the shoulders of giants: a South African’s contribution to global radio astronomy
HERA: Building to view the past
Across the Globe
SKA prototype dish assembled for the first time
First SKA-Low Prototype Station completed on site
SKA precursor upgrade makes telescope 10 times more powerful
Paving the way towards the SKA: astronomers detect signal from the first stars
Spain joins the SKA Organisation
New platform to showcase SKA’s major engineering progress
SKA treaty open for initialling
SARAO Science Engagement
RD9 Solutions: Introduction to Robotics
DST Mini Science Forum ignites conversations about big science
SARAO participates in Science Centre World Summit 2017
SARAO participates in third Science Forum South Africa
SARAO/SKA SA hosts DST Mini Science Forum in Northern Cape
Scifest Africa 2018
SARAO and Oculus announce partnership
SARAO wins Best Workshop prize at Scifest Africa 2018
NASA Electrical Engineer visits schools in Sutherland
SARAO participates in Public Communication of Science and Technology Conference in Dunedin, New Zealand
Participants graduate from Phase 1 of MAPPP NINE
SKA AVN MAPPP NINE Development Lab
MAPPP NINE expands to SKA AVN
IAU CAP 2018
SARAO participates in EuroScience Open Forum 2018 in Toulouse, France
National Science Week 2018
SARAO hosts 2018 SAASTA National Schools Debates Competition in the Northern Cape and North West
SARAO Big Data Africa School 2018 kicks off
Carnarvon High School teams through to National Competition of World Robot Olympiad 2018
SARAO Big Data Africa School 2018 ends on high note for African students
SARAO People
SARAO staffers shine at INCOSE SA 2018 conference
Five SARAO electrician trade artisan students attend media training in Carnarvon
SARAO Junior engineer wins Best Poster Presentation at UCT Engineering Research Expo
Dr Bonita de Swardt presents at plenary session at Grand Challenges Partners meeting in Kenya
SARAO bursary holder wins first prize in AT-RASC student paper competition
Dr Aletha de Witt elected to the IAU commission on astrometry
Dr Rob Adam inducted as a Fellow of the South African Academy of Engineering
SARAO bursary funded students selected for 2018/19 CSIRO scholarship
Junior Science Process Developer wins Thomson Reuters Award
Brendan Swarts – Electrician Artisan student
Morgan Daba – Electrician Artisan student
Marthinus Steyn – Telescope Operator
Griet Tobias – Housekeeper
Jan Mouers – General Worker
Mathakane Molewa – HERA Construction Supervisor
Malissa Pietersen – Procurement Officer (Site)
Lourencia Lyon – HERA General Worker
Peter van Wyngaarden – HERA General Worker
Bradwin Vermeulen – HERA General Worker
Tyrone Adams – HERA General Worker
Levurd Vaarland – HERA General Worker
R. Sean Oliphant – Mathematics teacher at Carnarvon High School
MeerKAT radio telescope inaugurated in South Africa – reveals clearest view yet of centre of the Milky Way
SARAO News #02 2018
Deputy President of the Republic of South Africa, Mr David Mabuza, officially inaugurated the MeerKAT radio telescope on Friday, 13 July 2018. After a decade in design and construction, this project of South Africa’s Department of Science and Technology has now begun science operations. At the launch event, a panorama obtained with the new telescope was unveiled that reveals extraordinary detail in the region surrounding the supermassive black hole at the centre of our Milky Way Galaxy. This is one of several very exciting new views of the Universe already observed by the telescope.
“We wanted to show the science capabilities of this new instrument”, says Fernando Camilo, chief scientist of the South African Radio Astronomy Observatory (SARAO), which built and operates MeerKAT in the semi-arid Karoo region of the Northern Cape. “The centre of the galaxy was an obvious target: unique, visually striking and full of unexplained phenomena – but also notoriously hard to image using radio telescopes”, according to Camilo. The centre of the Milky Way, 25,000 light-years away from Earth and lying behind the constellation Sagittarius (the “Teapot”), is forever enshrouded by intervening clouds of gas and dust, making it invisible from Earth using ordinary telescopes. However, infrared, X-ray, and in particular, radio wavelengths penetrate the obscuring dust and open a window into this distinctive region with its unique 4 million solar mass black hole. “Although it’s early days with MeerKAT, and a lot remains to be optimised, we decided to go for it – and were stunned by the results.”
“This image is remarkable”, says Farhad Yusef-Zadeh of Northwestern University in Evanston, Illinois, one of the world’s leading experts on the mysterious filamentary structures present near the central black hole but nowhere else in the Milky Way. These long and narrow magnetised filaments were discovered in the 1980s using the Very Large Array (VLA) radio telescope in New Mexico, but their origin has remained a mystery. “The MeerKAT image has such clarity”, continues Yusef-Zadeh, “it shows so many features never before seen, including compact sources associated with some of the filaments, that it could provide the key to cracking the code and solve this three-decade riddle”.
Yusef-Zadeh adds that “MeerKAT now provides an unsurpassed view of this unique region of our galaxy. It’s an exceptional achievement, congratulations to our South African colleagues. They’ve built an instrument that will be the envy of astronomers everywhere and will be in great demand for years to come”.
This image, based on observations made with South Africa’s MeerKAT radio telescope, shows the clearest view yet of the central regions of our galaxy. At the distance of the galactic centre (located within the white area near image centre), this 2 degree by 1 degree panorama corresponds to an area of approximately 1,000 light-years by 500 light-years.
The colour scheme chosen here to display the signals represents the brightness of the radio waves recorded by the telescope (ranging from red for faint emission to orange to yellow to white for the brightest areas). This image shows a wealth of never before seen features, as well as a clearer view of previously known supernova remnants, star-forming regions, and radio filaments.
MeerKAT’s 64 dishes or antennas provide 2,000 unique antenna pairs, far more than any comparable telescope. This design feature contributes critically to making high-fidelity images of the radio sky, including this best view in existence of the centre of the Milky Way. It is also advantageous to observe the centre of the galaxy from South Africa, where it passes overhead and is visible for almost 12 hours each day, unlike from northern hemisphere locations.
Radio array telescopes do not measure the very largest, smooth structures in a given region of the sky. That additional information can be obtained using single dish radio telescopes; for the MeerKAT image shown here, that information is from the Green Bank Telescope (courtesy of Bill Cotton, NRAO).
Last Updated on November 19, 2018
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