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22 September 2021
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Story Michelle Nöthling
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Photo Supplied
Annemarie Le Roux.
“I love working with children.” This is one of the first things Annemarie le Roux mentions when asked to describe herself. This love for children propelled Annemarie into the field of education and she graduated in 2006 with a BEd in Foundation Phase at the UFS. Annemarie immediately immersed herself in the Deaf community, enriching the lives of children at the Thiboloha School for the Deaf in Qwaqwa and the De la Bat School for the Deaf in Worcester.
The academic world enticed Annemarie back to the University of the Free State (UFS) and she was appointed as a junior lecturer in the Department of South African Sign Language (SASL) and Deaf Studies in 2013. Going from strength to strength, Annemarie completed her master’s degree in SASL in 2019, and published an
article earlier this year that she co-wrote with Marga Stander. In this article, they found that SASL “has become an increasingly popular language that hearing university students want to learn as a second language” and subsequently explored different teaching methods used for this emerging group of interested students.
Although now firmly established in academia, Annemarie is still committed to the practical application of SASL. “I am closely involved in student and community engagement through the
SIGNALS Sign Language student association that helps empower the Deaf community and South African Sign Language.” She also interprets for the Deaf community whenever she gets an opportunity, as well as for Deaf students in class and meetings.
On the importance of Sign Language and the recognition of the Deaf community in South Africa, Annemarie believes it will open greater opportunities for development. “More people will be able to learn SASL, and it might even become a subject in school for hearing children.”
Two scientists part of team that discovers the source of the highest energy cosmic rays at the centre of the Milky Way
2016-03-22
Artist's impression of the giant molecular clouds surrounding the Galactic Centre, bombarded by very high energy protons accelerated in the vicinity of the central black hole and subsequently shining in gamma rays.
Artist's impression: © Dr Mark A. Garlick/ H.E.S.S. Collaboration Spotlight photo:
Dr Brian van Soelen and Prof Pieter Meintjes of the UFS Department of Physics.
Photo: Charl Devenish
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H.E.S.S. (High Energy Stereoscopic System) scientists publically revealed their latest galactic discovery in the international science journal, Nature, on 16 March 2016. These scientists were able to pinpoint the most powerful source of cosmic radiation – which, up to now, remained a mystery.
Part of this team of scientists are Prof Pieter Meintjes and Dr Brian van Soelen, both in the University of the Free State (UFS) Department of Physics. Dr Van Soelen explains that they have discovered a proton PeVatron – a source that can accelerate protons up to energies of ~1 PeV (10^15 eV) – at the centre of the Milky Way. The supermassive black hole called Sagittarius A has been identified as the most plausible source of this unprecedented acceleration of protons.
The protons are accelerated to Very High Energy (VHE) gamma rays. The energy of these protons are 100 times larger than those achieved by the Large Hadron Collider at CERN (the European Organization for Nuclear Research).
According to Dr Van Soelen, the fact that this research has been published in Nature demonstrates the importance and pioneering nature of the research conducted by H.E.S.S. The H.E.S.S. observatory – operational in Namibia – is a collaboration between 42 scientific institutions in 12 countries.
In 2006, H.E.S.S. was awarded the Descartes Prize of the European Commission – the highest recognition for collaborative research – and in 2010 the prestigious Rossi Prize of the American Astronomical Society. The extent of the observatory’s significance places it among the ranks of the Hubble Space Telescope and the telescopes of the European Southern Observatory in Chile.
“The next generation VHE gamma-ray telescope,” Dr Van Soelen says, “will be the Cherenkov Telescope Array (CTA), which is currently in the design and development stage.” Both Dr Van Soelen and Prof Meintjes are part of this project as well.
H.E.S.S. has issued a complete statement about the paper published in Nature.