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11 February 2022
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Story Leonie Bolleurs and Rulanzen Martin
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After two years of lockdown, online meetings, and limited contact with colleagues, academy at the University of the Free State (UFS) is gradually returning to normal. This month (February 2022), staff, students, and members of related industries will convene on three different occasions to learn about cutting-edge scholarship, to reconnect with each other, and to discuss issues impacting society in the fields of theology, the humanities, and agriculture.
Seminar on ‘The Limits of Decolonisation’ with Prof RW Johnson
Date: 24 February 2022
Time: 09:00-16:00 SAST
Venue/Platform: Equitas Auditorium, UFS Bloemfontein Campus, and Microsoft Teams
Decolonisation has been a heated point of discussion for some time now, but have you ever wondered if there could be limitations hindering the decolonisation project? The Departments of Political Studies and Governance and Philosophy and Classics at the UFS will host an array of academics and experts for a hybrid seminar on the topic The Limits of Decolonisation.
If decolonisation is an important issue for you or if you are interested in the topic and its relevance and influence in the world and academia, you should join or attend the seminar – either online via Microsoft Teams or in person in the Equitas Auditorium – on 24 February 2022 from 09:00.
The keynote speaker is political scientist
Prof RW Johnson from the University of Oxford. Prof Johnson is an emeritus fellow at Magdalen College and is the author of several acclaimed political books. The other speakers are all from the Departments of Political Studies and Governance, and Philosophy and Classics. Terrence Corrigan from the
South African Institute of Race Relations will speak on The relationship between critical race theory and decolonisation.
RSVP: Alice Stander StanderAFM@ufs.ac.za (please specify dietary requirements, as a light lunch will be served)
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.