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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

University community join hands in the walk for peace and justice
2016-03-02

Description: Prayer walk Callie Human Centre Tags: Prayer walk

The Campus Ministries Forum and South African Council of Churches (Free State) have organised a walk for peace and justice from the Main Building to the Callie Human Centre on the Bloemfontein Campus of the University of the Free State (UFS) on Tuesday 1 March 2016. This walk was followed by a prayer meeting at the Callie Human Centre.

Pastors from the Campus Ministries Forum of the South African Council of Churches (Free State) led a group of more than 350 students and staff in praise and worship, followed by prayers in English, Afrikaans, and Sesotho.

A significant gesture at the event was the church leader’s plea for peace and solutions for the conflict at the UFS.

Bishop Monty Mabale, Chairperson of the South African Council of Churches, read an extract from the declaration compiled by the pastors ministering to staff and students at the UFS.

“We are saddened by the violence and vandalism that took place on and off campus.  We understand that there are many reasons for frustration and anger, which lead to tensions at the end of last year and again now. We also understand that there are different perspectives on these developments and the complexities underlying to this. However, we cannot agree with the hate speech, the continuous blaming of others, the instigation of violence, and the damage being caused to this precious institution and its commitment to the ideal and practices of reconciliation and a proper education for every student.

“Because we believe in the justice and mercy of God in Christ, let us seek His justice in a compassionate way. Let us resolve to glorify his name in the way we enter into dignified discussions when addressing those matters we perceive to be injustices, and seek for solutions. Let us be critical of our own biased perceptions, opening ourselves to the practice of listening to the viewpoints of others and learning from each other, while discerning the will of God in our society together,” Bishop Mabale said.

The forum and council also wrote a special prayer for UFS students, staff, parents, and management:

Our Father in Heaven
•    You have created us all as unique, special people, each with a great destiny.
•    You have an awesome plan for our University, and value every person working and studying here.
•    We have not respected Your heart and opinion of everyone on campus, and so we have sinned against You.
•    Forgive us where we did not follow Your example of reconciliation, restoration, and forgiveness through the blood of Christ, Your Son, on the cross. We need You to show us what You expect of us: grace, mercy, respect, and tolerance for one another from a place of gratefulness and humility.
•    We are grateful for the opportunity and honour You have given us to be involved in this institution.
•    We repent and accept afresh Your commandment to love You and to love our neighbour as we love ourselves.
•    You are saying to us: “For I know the plans I have for you," declares the LORD, "plans to prosper you and not to harm you, plans to give you hope and a future.” We, as an institution, believe and receive this promise You gave to us.

In Jesus Name we pray,
Amen.

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