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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

Kovsie hockey achieves
2010-07-22

Gregg Clark

Three players from the University of the Free State (UFS) Womens Second Hockey Team, Theane Guthrie, Ayesha Samuels and Chantelle Deere, were selected for the South African Country Districts A Team. Theane, Ayesha and Chantelle played for Free State B Team when they participated in the recent SA Country Districts Hockey tournament. The Free State B Team also won the Tournament. 

Jason Klinkradt, coach of the UFS Womens Second Team, was also the coach for the Free State B Team.

Eight Kovsies were also included in the Free State Hockey Team that will participate in the National Interprovincial Hockey Tournament in East-London from 19-24 July 2010. The players are Lesley Ann George (captain), Berne van Wyk, Jo-Nelka Swanepoel, Felicia Shongwe, Orpah Pretorius, Cardeux Nel, Nicole Kemp and Hettie Oosthuizen. The Protea under-captain, Lesley Ann is the captain of the Free State Team. Elsie Coetzer, the Kovsie womens hockey coach, is also the coach of this team.

More news from Kovsie hockey is that the national mens coach, Mr Gregg Clark, presented a very successful training camp for the Free State womens and mens teams on the Kovsie Astros. The training camp was open to all Free State coaches and was amongst others attended by Elsie Coetzer and Des Donald, Kovsies mens hockey coach.

Mr Clark was also course leader at the hockey course for schools, attended by 900 learners, presented by the Kovsie Hockey club earlier this year, said Mr Frans van der Watt from KovsieSport.
 

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