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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

Council votes on appointment of senior staff
2004-11-18

The Council of the University of the Free State (UFS) today voted on the filling of three senior vacancies, including one post at Dean level and two at the level of Vice-Dean.

The Council voted as follows:

Dr Natie Luyt will be offered the post of Dean: Student Affairs Prof Engela Pretorius will be offered the post of Vice-Dean: Faculty of Humanities Dr Choice Makhetha will be offered the post of Vice-Dean: Student Affairs

“There are special challenges for the UFS in the short and medium term regarding transformation of our residences, and a certain combination of management qualities and skills is desirable. As a result of the diversity of the UFS’s student community it is therefore important to us to follow a team approach to deal with the challenges. With the combination of Drs Luyt and Makhetha, I believe we will be able to manage student affairs effectively and skillfully,” says Prof Frederick Fourie, Rector and Vice-Chancellor of the UFS.

“It is wonderful that we are able to celebrate the outcome of this process that has brought forward such excellent candidates who reflect our country’s diversity. It shows that we can achieve the goals of quality and diversity at the same time,” says Prof Fourie.

Prof Pretorius obtained all her qualifications (BA, BA (Hons) (cum laude), MA (cum laude) and D Phil) from the UFS, except for the Certificate in Gender Policy Management (cum laude) which she obtained in 2000 from WITS. She joined the Department of Sociology at UFS in 1980 and has headed the Department since 2001. She acted as Vice-Dean: Faculty of Humanities since July 2004. She has some thirty publications to her credit, published both nationally and internationally and has delivered 20 national and international papers. She is a member of the South African Sociological Association and is a member of the Council of the association and of the Editorial Board of Society in Transition, the society’s journal. She is also a member of the South African Academy for Science and Art and the Federation of African Women Educationalists in South Africa (FAWESA). Project involvement includes the Australian Women’s Executive Development Programme and the project Executive Development of Senior Women in South African Higher Education Institutions. She is also an NRF panelist.

Dr Luyt obtained his qualifications (BA, BA (Hons) (cum laude), MA (cum laude) and D Phil) at the UFS and started his career at the same institution in 1980 as lecturer in Political Science. He was promoted to senior lecturer in 1983 and appointed as Director: Student Affairs in 1997. He has been acting as Dean: Student Affairs since 2003. Dr Luyt completed several work-related training courses, among others a course in ethnic and multiculturality at the Swiss Institute for Federalism and a course in conflict management at the South Tyrolean Economic and Social Institute.

Dr Makheta also obtained all her qualifications (BA, BA (Hons), MA in Political Science and Ph D in Political Science) at the UFS and started working as a student assistant in Political Science at the same institution in 1999. She was promoted to junior assistant in 2000, coordinator and facilitator of Political Science in 2001, assistant/acting Director: Student Affairs in 2001 and acting Director: Student Affairs in 2003. Dr Makhetha is currently a Senior Political Analyst at the Department of Foreign Affairs.

The UFS Council also approved the promotion of nine professors to the rank of senior professor. They are Proff Louise Cilliers (Department English and Classical Languages), Dap Louw (Department of Psychology), Philip Nel (Department Afro-Asiatic Studies, Sign Language and Language Practice), Dirk van den Berg (Department of History of Art and Visual Culture Studies) Dingie van Rensburg (Director: Centre for Health Systems Research and Develoment), Andries Raath (Department of Constitutional Law and Philosophy of Law), James du Preez (Department of Microbial, Biochemical and Food Biotechnology), Johan Grobbelaar (Department of Plant Sciences) and Louis Scott (Department of Plant Sciences).

This is the first group ever of senior professors at the UFS. The post level was created to provide better career and earnings opportunities for high quality academics and to increase the attractiveness of an academic career to young people.

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
 

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