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BOOTES-6 Telescope Station captures rare southern lights and advances UFS space research

05 November 2024 | Story Leonie Bolleurs | Photo Supplied

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 to award honorary doctorate to Maria Ramos

2004-12-08

The Council of the University of the Free State (UFS) recently approved the awarding of an honorary doctorate to Ms Maria Ramos, Group Chief Executive of Transnet in April 2005. A total of five honorary doctorandi will be honored.

The other doctorandi are Proff Jan Groenewald (D Sc (hc)), Jaap Durand (D Phil (hc)), Sampie Terreblanche (C Dom (hc)) and Anthon Heyns (MD (hc)).

Me Ramos will receive an honorary doctorate in Economics (P hD (Economics) (hc)) for the large contribution she made to the establishment of a prudent fiscal and macro-economic policy in South Africa and hence, to the restoration of the financial credibility of the country in the eyes of domestic and foreign investors. Ms Ramos was the Director General of the National Treasury from 1996-2003.

She obtained the MSc-degree in Economics in 1992 from the University of London and was awarded a British Council Scholarship (Helen Suzman award) in the same year and in 1991. During the early nineties she was among others project leader of the ANC’s Macro-economic Research Group and also a member of the team that negotiated chapters on finance in the interim Constitution of South Africa. She was a research associate at the Centre for the Study of the South African Economy and International Finance at the London School of Economics and also lectured at the Universities of South Africa and the Witwatersrand.

“It is a great privilege for us to honor Ms Ramos and the other doctorandi in their different fields of expertise. This once again serves as an example of the UFS’s policy to give recognition to people who excel and make a difference,” said Prof Frederick Fourie, Rector and Vice-Chancellor of the UFS.

Prof Jan Groenewald will receive an honorary doctorate for his life-long commitment to the establishment and development of Agricultural Economics as a subject field in South Africa and in Africa and his various contributions to the UFS. During his career, Prof Groenewald received various awards among others in 1998 when he received the Stals Prize for Economics from the South African Academy for Science and Art and in 1990 when he received an honorary medal from the South African Society for Agricultural Economics.

Prof Jaap Durand will receive an honorary doctorate in Philosophy for his pioneering work on various fields in the South African society. He obtained his Masters degree in Philosophy from the UFS and contributed to almost 60 articles and collections. Prof Durand has a colourful career as academic manager: from professor in Systematic Theology and dean of the Faculty of Theology at the University of the Western Cape to Deputy Vice-Chancellor of the same university. He was the ombudsman of the University of Stellenbosch from 2002-2003.

Prof Sampie Terreblanche will receive an honorary doctorate in Economics for the important role he played, and is still playing, to keep the debate about and the need for socio-economic and socio-political reform in South Africa going. Prof Terreblanche started his career as a lecturer at the UFS. In 1992 the Stals Prize for Economics was awarded to him by the South African Academy for Science and Art. Prof Terreblanche was also a founding member of ASSET, an organisation addressing the problems of poverty, inequality and social injustice in South Africa.

Prof Anthon Heyns, Chief Executive Officer of the South African National Blood Service, will receive an honorary doctorate in Medicine. Prof Heyns is a well-known international researcher in Hematology and recently received a Centenary Medal from the UFS for his strong role and national prominence as expert and leading figure in establishing and developing Hematology at the UFS. He was the first head of the UFS’s Department of Hematology and is also co-editor of the only Afrikaans hand book of Hematology. He serves among others as a council member and member of the executive management of the South African Medical Research Council. On the international front he serves on at least five committees of the World Health Organisation based in Geneve, Switzerland. He has two honorary appointments as professor respectively at the UFS and University of the Witwatersrand.

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
8 December 2004

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