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27 March 2018 Photo Varsity Sports
Medals galore at second Varsity meeting Peter Makgato
Peter Makgato won the long jump title at the second Varsity athletics meeting in Pretoria with a winning jump of 7.56m.

The University of the Free State (UFS) had a successful second Varsity athletics meeting on Friday 23 March 2018 at the Tuks Athletics Stadium in Pretoria, dominating the long jump and middle distances. 

The 25 athletes achieved six gold and eight bronze medals. Although it’s just one more than what they earned at the first Varsity meeting at the beginning of the month, two more received gold. On 2 March 2018 the Free State students totalled four gold, six silver and three bronze medals. 

Although Yolandi Stander bagged a silver in the discus, it didn’t contribute to the Kovsies’ total. Stander competed for Tuks last year and the competition rules do not permit her to participate for another university in the following year.
 
Victories in middle distances and long jump
As was the case in the first meeting, the athletes running in the red colours of the Kovsies outsprinted the rest in the middle distances with three first places. Both Ruan Jonck (1:50.56) and Ts’epang Sello (2:10.42) defended their titles in the 800m for men and women respectively.

In the 1500m for women, Tyler Beling clocked a winning time of 04:33.48 with Lara Orrock following in third place (04:46.37). Both are just 18 years old. 

Both long-jump titles were decisive victories. Peter Makgato’s winning jump (7.56m) was 0.17m more than his closest competitor, and Maryke Brits (5.81m) won by 0.14m.

Three bronze medals were added in the field events; Nadia Meiring (47.10m) in the hammer throw) and Sefako Mokhosoa (15.29m, men) and Molebohang Pherane (11.67m, women) both in the triple jump. 

On the track Ané Erasmus (400m hurdles, 1:04.04), Hendrik Maartens (200m, 21.01) and Sokwakana Mogwasi (100m, 11.99) all ended in the third spot. 

The men’s varsity mixed medley relay won their race once again, and the men’s 4x100m relay finished third. 
The Kovsies ended fourth overall after the two meetings.

News Archive

Discovery in Scorpius constellation may signify clean energy for Earth
2017-01-23

 Description: Discovery in Scorpius constellation may signify clean energy for Earth Tags: Discovery in Scorpius constellation may signify clean energy for Earth

Earlier this year, a group of international astronomers
announced the discovery of an exotic binary star system,
AR Scorpii. The system is in the Scorpius constellation.
Photos: Supplied

See article on Nature’s website 

In future, stargazers and astronomers will look at the Scorpius constellation near the Milky Way with new eyes. Earlier this year, a group of international astronomers announced the discovery of an exotic binary star system, AR Scorpii. The system is in the Scorpius constellation.

Prof Pieter Meintjes, researcher in the Department of Physics at the University of the Free State (UFS), worked with four colleagues on what he describes as a “wonderful discovery”. This sensational discovery, which could lead to the production of cleaner energy on Earth, will be published in the research journal, Nature, early in 2017.

Model developed to interpret new set of measurements
The exotic binary star which was discovered consists of a red dwarf and a white dwarf revolving around each other every 3,5 hours. The binary system showed very prominent pulsations of 117 and 118 seconds respectively. The pulsations can be explained by a bundle radiation produced by the white dwarf star.

“These new observations have shown that the radiation is strongly polarised, a sign that we are dealing with synchrotron radiation here. Synchrotron radiation is produced by electrons accelerated to extremely high energy levels in the magnetic field of the white dwarf star,” says Prof Meintjes.

He developed a theoretical model to interpret a new set of measurements that was taken by the 1,9 m telescope and the 10 m SALT telescope at the South African Astronomical Observatory (SAA0).

Totally unique phenomenon could contribute to energy production on Earth
“I further indicated that the interaction between the magnetic fields of the white dwarf star and the red dwarf star induces secondary processes that specifically describe the behaviour of the radiation in the radio band and infrared band accurately. AR Sco is the first white-red dwarf binary system of which all the pulsated radiation could be explained by the synchrotron process, which is totally unique,” says Prof Meintjes.

According to Prof Meintjes, the value of the model lies in the fact that the processes which produce the radiation in AR Sco, can also be applied to produce energy on Earth.

 

Plasma reactors are based on roughly the same processes which apply in AR Sco, and with refining, it could be utilised to generate electricity in future. This will be much cleaner than nuclear energy.

 

The model developed by Prof Meintjes explains all the radiation in the system – from radio waves to X-rays – in terms of electrons accelerated to extremely high energy levels by electric fields in the system, which then produce synchrotron radiation over a very wide band of the electromagnetic spectrum.

Prof Meintjes is currently working on a follow-up article examining the evolution of the AR Sco, in other words, the origin of such a unique system and the final state towards which it is evolving. “My vision for the immediate future is therefore to develop a model for the evolution of the source concerned,” he says.

 

 

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