Latest News Archive
Please select Category, Year, and then Month to display items
01 October 2019
|
Story Prof Francis Petersen
|
Photo Pixabay
During October, the national focus is on mental health. Mental Health Awareness Month also coincides with a time when our students prepare for the end of the year exams, making it a particularly valuable time for us to think about how we can continuously assist them during their time at university. The value of peer support and genuine care can never be overstressed; that is why I want to encourage our students to reach out to their support networks such as our Department of Student Counselling and Development, as we move towards the end of the year.
Mental health is an equally important matter for our staff. During this month, I want to encourage our staff to also take cognisance of their own well-being. There is a lot of wisdom in the old adage: Healthy body, healthy mind. Many of the initiatives of our Division of Organisational Development and Employee Wellness are focused on the value of physical activity and the negative impact that inactivity can have on one’s productivity and mental health. They also present regular lunch-hour sessions for our staff, where experts share information and practical tips for mental wellness. I want to encourage our staff to attend these sessions and to make use of the services the university has to offer in this regard. It is important to note that suffering from mental and anxiety disorders is not weaknesses and it is not always indicative of a deeper psychological issue; it is an illness and hence can be treated.
On 20 September 2019, a 21-member team was sent off on their run of 1 075 km to Stellenbosch to raise awareness for mental health. The run was organised by the Division of Organisational Development and Employee Wellness and the Faculty of Health Sciences. The team ran in relay format throughout the night and handed the baton of hope to Stellenbosch University on 25 September 2019. I admire and thank them not only for their commitment and stamina, but also for addressing this crucial matter in the public domain and for raising awareness in the many towns and communities along the way.
This is an excerpt from a message by Prof Francis Petersen.
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
|
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.