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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

UFS researcher runner-up in 2014 Women in Science Awards
2014-08-18

 

Prof Jeanet Conradie
Photo: Supplied

Prof Jeanet Conradie, professor in the Department of Chemistry at the University of the Free State (UFS), was the runner up in the senior category for Distinguished Women Researchers: Physical and Engineering Science in the Department of Science and Technology’s 2014 Women in Science Awards. With this award, female scientists and researchers are encouraged and rewarded, and also profiled as role models for younger women. 
 
Science and research, by which new concepts are discovered, is her great passion. Due to this keen interest in science, Prof Conradie studied a variety of subjects during her undergraduate years, providing her with a vast knowledge and the necessary background for her current main research interest, which is a combination of various scientific fields. Her PhD in Chemistry, as well as her strong background in Physics, Computer Science, Mathematics and Applied Maths, influenced her choice of research interest and expertise to gradually develop in the direction of computational chemistry, which is a beautiful combination of chemistry and physics. 
 
Today, Prof Conradie’s research expertise is in computational chemistry, using the super computer and appropriate software to simulate, understand and predict the behaviour of atoms and molecules in real life. The use of computational chemistry makes it possible to study chemical reactions and phenomena that are impossible or too dangerous to study experimentally. Her research team also performs experimental work in the laboratory to combine and compare with the computational analysis. Based on the results obtained, new materials with specific properties are developed. 
 
“We are very proud of Prof Conradie. This award is the result of 14 years of hard word, a lot of it after hours. We are fortunate to have someone like you as colleague who puts guidance to students and learners first in research, teaching and community service,” said Prof André Roodt, Head of the Department of Chemistry at the UFS. 
 
Prof Corli Witthuhn, Vice-Rector: Research said: “Prof Conradie serves as a role model for younger academic scholars in higher education through her motivation, productivity and drive. She also serves as an example of how female scientist can reach the top of their profession while juggling both professional and family responsibilities. This is well deserved recognition for her outstanding research achievements”

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