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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

Miss World 2014 is a Kovsie
2014-12-14

Photo: Netwerk 24

The management, staff and students of the University of the Free State (UFS) are delighted with the naming of Rolene Strauss, third-year MB ChB student in the School of Medicine, as Miss World 2014.

Rolene was crowned as Miss World 2014 in London, United Kingdom, earlier this evening. The last time a South African was crowned Miss World was in 1974, when Anneline Kriel walked away with the title. Before her, Penny Coelen was crowned Miss World in 1958.

“Rolene represents the best of South Africa - a deep commitment to education and a profound compassion for human beings. Since the first day I met her as a new first-year medical student, I was aware of somebody special, a young woman from a rural area who carried herself with so much grace and confidence. She is truly without prejudice towards any human being and this has made her one of my allies in building the Human Project of the University of the Free State,” says Prof Jonathan Jansen, Vice-Chancellor and Rector of the UFS.

“I was not at all surprised that she chose as her beauty-with-a-purpose project the task of keeping young girls in school; this is who she is, and if you observe her dedication to her medical studies, you see someone for whom studies and service are not the add-on obligations of the Ms World Pageant; it is who she is in real life,” he says.

“Rolene has proven herself to be a dedicated, hard-working and enthusiastic young woman. These are qualities which will make her an equally exceptional Miss World,” says Prof Gert van Zyl, Dean of the Faculty of Health Sciences.

According to Prof Van Zyl, Rolene interrupted her medical studies when she competed in the Miss South Africa pageant. “We are extremely proud of Rolene and will definitely welcome her back after her year as Miss World. She is an inspiration to us all,” he says.

According to Mosa Leteane, President of the UFS Student Representative Council (SRC), the entire student community is elated about Rolene’s crowning. “We know that she will continue to do great on her new journey. Her passion for people and kind spirit are some of the many beautiful traits that continue to make her an exemplary fellow Kovsie. We would like to congratulate her and wish all the best. She has really made us extremely proud,” says Leteane.

 

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