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05 November 2024 | Story Leonie Bolleurs | Photo Supplied
BOOTES-6 telescope station
The BOOTES-6 telescope station captured a South African sighting of the southern lights, a rare atmospheric phenomenon powered by solar activity.

The northern lights, with their vibrant displays of green, pink, and violet hues, have become a famous attraction in Nordic countries. But in early October, a rare sighting of the southern lights – or aurora australis – was reported in South Africa, surprising many.

Prof Pieter Meintjes, Professor in the Department of Physics at the University of the Free State (UFS), explains that both the northern and southern lights are the result of charged particles from coronal mass ejections (CMEs) on the sun, which are captured by Earth’s magnetic field. "The interaction between magnetic fields and charged particles, such as protons and electrons, is very interesting. The magnetic field forces these particles to spiral around the field lines, ultimately guiding them towards the magnetic poles. As these particles enter Earth’s atmosphere, they collide with atmospheric atoms, causing a beautiful glow. The colours of the aurora indicate which atoms are involved. Typically, hydrogen shines red, while oxygen and nitrogen produce a greenish-blue tinge," he says.

Observing the southern lights

When the display occurs above the northern magnetic pole, it is called the aurora borealis (northern lights) and can typically be observed over regions such as Alaska, Greenland, and the Nordic countries. Above the southern magnetic pole, it is known as aurora australis (southern lights), usually visible over places such as Antarctica and New Zealand. “In extreme cases – when gigantic mass ejections occurred – it can also be observed in mid-latitudes such as South Africa,” says Prof Meintjes.

This recent and rare South African sighting was also captured by the BOOTES-6 telescope station at Boyden Observatory, located just outside Bloemfontein. According to Prof Meintjes, the telescope station has an all-sky monitor – a camera constantly watching the sky for changes and monitoring, among others, cloud cover to ensure that the telescope is always safe from weather. While the monitor was taking photos of the night sky, Prof Alberto Castro-Tirado, a research professor at the Institute of Astrophysics of Andalusia in Spain, picked up the aurora.

The Institute of Astrophysics of Andalusia in Spain, in collaboration with the University College Dublin (UCD), is partnering with the UFS in a research-driven initiative involving the BOOTES-6 telescope station, installed in 2022 during the COVID-19 pandemic. Under a Memorandum of Understanding that was recently renewed for another five years, the UFS and UCD share approximately 30% of the telescope's observing time dedicated to UFS research.

“The DPRT telescope (Dolores Pérez-Ramírez telescope), named after a Spanish astronomer and lecturer at the University of Jaén, contributes significantly to our research, with publications resulting from contributions made by the telescope station and collaborators on gamma-ray bursts, occultations, and transient events co-authored by me and a colleague in the department, Dr Hendrik van Heerden,” notes Prof Meintjes.

Research-driven initiatives

Data from the telescope station is also used for their in-house projects and contributes significantly to the work of their PhD students that will be submitted in the next few years. This includes the PhD work of Helene Szegedi, who uses data from the BOOTES-6 telescope station to study cataclysmic variable systems – compact binaries that erupt regularly. Another PhD student, Joleen Barnard, studies blazar variability under the guidance of Prof Brian van Soelen. Blazars, explains Prof Meintjes, are the core of distant galaxies powered by supermassive black holes. These cosmic jets are pointed towards Earth, but fortunately, they are millions or billions of light years away; otherwise, their impact would be devastating to life on Earth.

News Archive

UFS establishes links with the University of Ghent
2007-11-15

The University of the Free State (UFS) recently formalised its co-operation ties with the University of Ghent in Belgium. The two universities signed a memorandum of understanding during the Accenta Trade Fair, an annual event that incorporates activities such as business seminars, cultural events and exhibitions.

The signing of the memorandum of understanding took place via a live video conference linking the two institutions of higher learning.

“It was a wonderful moment because, after signing the memorandum of understanding on the Main Campus in Bloemfontein, the Rector and Vice-Chancellor, Prof. Frederick Fourie, actually showed us his signature on the screen while we were in Ghent”, said Prof. Koos Bekker of the Department of Public Management at the UFS, who was part of the delegation from the Free State.

The delegation consisted of the Premier, Ms Beatrice Marshoff, and several MECs and senior officials from the Free State provincial government, as well as the mayor, councillors and senior officials of the Mangaung Local Municipality. Several staff members of the UFS were also part of the delegation.

According to Prof. Bekker, the two universities will co-operate in various areas in terms of the memorandum of understanding.

“In the short term the collaboration will be focused on bio-fuels, public management and the digital divide, while discussions in other areas such as health services and organised crime are also under way,” he said.

As part of the memorandum of understanding, the following collaborative efforts are also envisaged:

Mr Lyndon du Plessis, a lecturer in the Department of Public Management, will be enrolled for a Ph.D. at both universities as from September 2008.

A research project involving both universities, the Mangaung Local Municipality and the City of Ghent, will be undertaken.
An investigation will be conducted by both universities regarding the possibility of writing a book on performance management in the public sector (negotiations with the publisher in this regard are under way).

An exchange programme involving students and staff from both universities will be established.

Academics from the UFS delivered papers during one of the forums that formed part of the Accenta Trade Fair programme in Ghent. Prof. Koos Bekker and Mr Lyndon du Plessis from the Department of Public Management delivered papers on strategic planning in practice on the first day of the event, which was devoted to scientific seminars. On the second day Prof. Lucius Botes, Director of the Centre for Development Support at the UFS, delivered a paper on economic development issues, and on the third day Prof. Gustav Visser, Associate Professor in the Department of Geography at the UFS, delivered a paper on tourism.

Papers on bridging the digital divide were presented during the video conference by academics in both Bloemfontein and Ghent.

As guests of honour at the Accenta Trade Fair, the Free State delegation was allocated the main exhibition floor space, covering 1 092 m². The Main Exhibition Hall covers a total surface area of 40 000 m². The Accenta Trade Fair attracts an average of 100 000 visitors annually. The UFS also participated as an exhibitor at the Trade Fair.

This visit was a follow-up of the previous visit, during which the Free State delegation was hosted by the City of Ghent and the provincial government of East Flanders for planning purposes from 14 to 24 April 2007.

Media Release
Issued by: Mangaliso Radebe
Assistant Director: Media Liaison
Tel: 051 401 2828
Cell: 078 460 3320
E-mail: radebemt.stg@ufs.ac.za  
14 November 2007
 

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