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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

Moshoeshoe Memorial Lecture to focus on Leadership challenges

2006-03-27

Lecture to focus on Leadership challenges

n Thursday 25 May 2006 – Africa Day – the University of the Free State (UFS) will host the inaugural King Moshoeshoe Memorial Lecture in honour of this great African leader and nation-builder.

Prof Njabulo Ndebele, internationally renowned writer and academic, and Vice-Chancellor of the University of Cape Town (UCT), will deliver the inaugural lecture at the Main Campus in Bloemfontein on the topic: Reflections on the Leadership Challenges in South Africa.

“I see the lecture as part of a larger debate on leadership models, particularly the concept of African leadership, as well as the ongoing discourse about nation-building and reconciliation,” says Prof Frederick Fourie, Rector and Vice-Chancellor of the UFS.

According to Prof Fourie, the Moshoeshoe project was launched at the UFS in 2004 to coincide with South Africa’s first decade of democracy and was part of the University’s centenary celebrations, having been founded in 1904.

“Through this project the UFS seeks to honour a great African leader and demonstrate our commitment to transformation so as to create a truly inclusive and non-racial university,” said Prof Fourie.

“As the founder of the Basotho nation, King Moshoeshoe is widely credited for his exceptional style of leadership, displaying the characteristics of diplomacy, reconciliation and peaceful co-existence in his efforts to unite diverse groups into one nation,” said Prof Fourie.

As part of its ongoing Moshoeshoe project, the UFS commissioned a television documentary programme on the life and legacy of King Moshoeshoe. This was completed in 2004 and broadcast on SABC 2 later that year.

For further information, Me Tumi Tabane can be contacted at (051) 401-2828 or tabaneme.stg@mail.uovs.ac.za.

Abridged curriculum vitae of Njabulo S Ndebele

Professor Njabulo S Ndebele is currently Vice-Chancellor and Principal of UCT.

Njabulo Ndebele began his term of office at UCT in July 2000, following tenure as a scholar in residence at the Ford Foundation’s headquarters in New York. He joined the Foundation in September 1998, immediately after a five-year term of office as Vice-Chancellor and Principal of the University of the North in Sovenga, at the then Northern Province. Previously he served as Vice-Rector of the University of the Western Cape. Earlier positions include Chair of the Department of African Literature at the University of the Witwatersrand; and Pro-Vice-Chancellor, Dean, and Head of the English Department at the National University of Lesotho.

An established author, Njabulo Ndebele recently published a novel The Cry of Winnie Mandela to critical acclaim. An earlier publication Fools and Other Stories won the Noma Award, Africa’s highest literary award for the best book published in Africa in 1984. His highly influential essays on South African literature and culture were published in a collection Rediscovery of the Ordinary.

Njabulo Ndebele served as President of the Congress of South African Writers for many years. As a public figure he is known for his incisive insights in commentaries on a range of public issues in South Africa. He holds honorary doctorates from Universities in the Netherlands, Japan, South Africa and the United States of America. He is also a Fellow of UCT.

Njabulo Ndebele is also a key figure in South African higher education. He has served as Chair of the South African Universities Vice-Chancellor’s Association from 2002-2005, and served on the Executive Board of the Association of African Universities since 2001. He has done public service in South Africa in the areas of broadcasting policy, school curriculum in history, and more recently as chair of a government commission on the development and use of African languages as media of instruction in South African higher education. He recently became President of the Association of the AAU and Chair of the Southern African Regional Universities Association (SARUA).

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
26 March 2006

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