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06 November 2020
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Story Rulanzen Martin
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Photo Supplied
Dr Tronél Hellberg, UFS alumna, completed her PhD in Music from the OSM in 2018.
The COVID-19 pandemic and subsequent lockdown has posed many challenges. Not only has it distrupted our normal way of life it but has created a ‘new normal.’ Even in these trying times, alumni from the University of the Free State (UFS) have adjusted to the new normal by going above and beyond to make it as normal as possible.
One of these is Dr Tronél Hellberg, an alumna from the
Odeion School of Music at the UFS, who has supported Grade 12 learners by presenting free online prescribed music theory classes. The classes are beneficial for learners following the CAPS or IEB curriculum. “I trust the online videos will assist learners and teachers to get through this challenging Grade 12 year,” says Dr Hellberg. She has
recorded more than 38 live videos on her
G-Sential Theory of Music Facebook page.
The recordings are accessible to Grade 12 learners and their teachers at no cost. Dr Hellberg established the
G-Sential Theory of Music in 2007 and has since published 20 theory of music books.
Apart from assisting in teaching, one of her main objectives is to reach less fortunate learners who do not have access to music teachers. “Grade 12 music literacy requires an accumulative understanding of theory of music,” she says. With her initiative she also aims to “fill any gaps” to solidify knowledge and information which might still be unclear.
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.