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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

Community of Qwaqwa gives Prof Petersen a warm Basotho welcome
2017-05-16

 

 Description: Prof Petersen with Basotho hat and blanket Tags: Prof Petersen with Basotho hat and blanket

 Prof Francis Petersen, Vice-Chancellor and Rector of the University of the Free State
Photo: Ian van Straaten

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Various stakeholders pledged their support to the newly-appointed Vice-Chancellor and Rector of the University of the Free State (UFS), Prof Francis Petersen, during the first in a series of welcoming events that was held at the Qwaqwa Campus on Thursday 11 May 2017.

A message of support and welcome from the Paramount Queen of the Bakoena Royal Council, Mofumahadi Mathokoana Mopeli, took everybody in attendance back three decades to the time when the campus was first established.

“The Qwaqwa Campus of the then University of the North was created to swell this area and the broader Eastern Free State with intellectual capacity,” she said.

“It is with this in mind that we encourage you, Prof Petersen, to continue upholding the best of your predecessors. Search for what they could not achieve and learn from that. Traditional leadership in this area will always be a friend to the university,” she added.

Description: Community of Qwaqwa gives Prof Petersen a warm Basotho welcome Tags: Community of Qwaqwa gives Prof Petersen a warm Basotho welcome

Prof Petersen received a warm Basotho
welcome from Morena Thokoana Mopeli and
Paramount Queen Mofumahadi Mathokoana Mopeli of
the Bakoena Royal Council. With them is
Mrs Cheslyn Petersen.
Photo: Thabo Kessah

The Thabo Mofutsanyana Education District was represented by the Acting District Director, Lindiwe Mabaso, who expressed the district’s pride in being associated with the university.

“Our district is excelling in Mathematics and Science, and this can be attributed to the educators that we get from the Qwaqwa Campus. We are proud to say that we are number one nationally when it comes to Mathematics and Science, and this is through the support we get from the campus. Our schools will continue to be centres of excellence under the new leadership of Prof Petersen,” she said.

Staff and students weigh in

Both Nehawu and Uvpersu expressed their optimism in working with Prof Petersen.

Branch chairperson of Nehawu, Teboho Pitso, said the union appreciated the fact that Prof Petersen was taking over the leadership of the institution at a very difficult time, both institutionally and nationally.

“As workers, we are faced with a lot of challenges and we hope that none of us will be retrenched under your leadership,” he said to an appreciative audience consisting of various internal and external stakeholders.

Acting Chairperson of UVPERSU, Khethiwe Biyo, said the workers’ union was happy that Prof Petersen believed in teamwork.

“Your commitment in working with us is appreciated. We look forward to learning from you about institutional innovation,” she said.

Students were represented by the Qwaqwa Campus SRC President, Njabulo Mwali, who expressed the need for a deeper and detailed transformation process.

“Your expertise and skills have set you above all other aspirant applicants for this position, and we hope that we will learn a lot on this journey,” he said.

“We at the UFS are actively, intentionally,
and continuously engaged in promoting
diversity.”

"Ensure fairness" 

In his response, Prof Petersen emphasised the importance of inclusivity and innovativeness. He said, “Staff and students at the three sites of learning must do all they can to ensure that the UFS realises its goal of being an inclusive institution, one that provides equal access and opportunities to everyone, makes a conscious effort to prevent discrimination, and ensure fairness.”

“Being committed to inclusivity means that we at the UFS are actively, intentionally, and continuously engaged in promoting diversity. This diversity is expressed through our people and through the curriculum, and in the way we work with our communities to promote awareness, empathy, and understanding of the complex ways individuals interact. As you know, our ultimate goal as a university is not only to educate young people up to the point that they graduate. What they learn during their time with us should help shape them into people who can think innovatively in order to address the challenges that face us in the 21st century,” he said.

The Qwaqwa Campus Chorale and the award-winning choir from The Beacon Secondary School in Phuthaditjhaba provided the entertainment.

Similar events will respectively be hosted on the South and Bloemfontein Campuses on 18 and 19 May 2017.

 

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