Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
04 April 2024 | Story Leonie Bolleurs | Photo Stephen Collett
Prof Frank Zachos
Prof Frank Zachos recently delivered his inaugural lecture on the UFS Bloemfontein Campus.

Prof Frank Zachos, a scientist and Head of the Mammal Collection at the Natural History Museum (NHM) in Vienna – one of the world’s largest natural history museums – recently delivered his inaugural lecture at the University of the Free State (UFS) on the Bloemfontein Campus.

His lecture was titled: Of bat bombs and super moms – the wondrous and wondrously curious world of mammals.

Prof Zachos, an affiliated researcher at the UFS, says he chose mammals as the topic of his lecture because he is a mammalogist and curator of mammals at the Natural History Museum. Additionally, he collaborates with Prof Paul Grobler, Head of the Department of Genetics, on mammal projects.

Exposure to almost unparalleled biodiversity in SA

With a mixture of entertaining fun facts and some proper research results, he presented his lecture, providing an overview of some of the most interesting aspects of mammals. These included their different ways of reproduction: the platypuses laying eggs, the tiny marsupial offspring growing in a pouch, and placental mammals having long gestation times. Furthermore, he compared levels of biodiversity in South Africa and Europe and highlighted some particularly bizarre mammals, such as the aye-aye, naked mole-rat, the platypus, and two extinct South African ungulates from their collection in Vienna – the quagga and the blue antelope.

Prof Zachos also discussed his own research on blue antelope genetics, as well as research on other species, in the context of the detrimental impact humans have on mammals and other wildlife.

Moreover, his lecture included a reference to Project X-Ray, a story of how the US army pursued an unsuccessful plan to use bats as carriers of mini bombs in World War II.

Prof Zachos, who is specifically known for his research on the systematics, biogeography, and genetics of red deer, as well as his theoretical work on the species problem (‘what is a species?’ –  one of the most hotly debated topics in evolutionary biology), is affiliated with the UFS due to his longstanding collaboration with Prof Grobler. He says they have known each other for a long time, have published together, and that he has also served as an external reviewer for several theses coming from the Department of Genetics.

“Apart from this personal connection, what made this collaboration particularly interesting to me from a professional viewpoint, is the rich wildlife biodiversity and the research focus of Prof Grobler’s research group, which overlaps significantly with my own longstanding interests,” adds Prof Zachos.

“Working with Prof Grobler, I am involved in studies on the genetic diversity and structuring of different mammal species occurring in South Africa. The opportunity to spend time in the field for sample collection and other activities is definitely also a highlight,” remarks Prof Zachos.

Ideal combination of academic and personal growth

Regarding his connection with the UFS and its impact on shaping the future direction of his research, he states that he has a strong interest in antelopes – a group of mammals not found in Europe, but very prominent in South Africa. “Apart from that, people in the Department of Genetics have expertise in relevant areas that I personally do not have, for example bioinformatics. For me, it is the ideal combination of academic and personal growth, and I am very grateful to have this unique opportunity.”

He believes that his affiliation with the UFS and its Department of Genetics will continue to provide him with opportunities to expand his research and knowledge to different species and ecosystems.

Beyond science, he says that he has developed an interest in the country as well. “I have been reading books about South Africa, and I consider myself very privileged to have a second academic home here, which gives me the opportunity for exchange with people of different backgrounds,” he comments.

News Archive

Einstein's gravitational waves as creative as Bach's music, says UFS physicist
2016-02-19

Description: Gravitational waves  Tags: Gravitational waves

Profile of the gravitational waves of the colliding black holes.

Prof Pieter Meintjes, Affiliated Researcher in the Department of Physics at the University of the Free State, welcomed the work done by the Laser Interferometer Gravitational-Wave Observatory (LIGO) science team.
 
For the first time, researchers from two of the American Ligo centres, in Washington and Louisiana respectively, observed gravitational waves directly, 100 years after Albert Einstein said they existed. "My study field in astrophysics involves relativistic systems. Therefore, Einstein's view of gravity is crucial to me. I consider the theory as the highest form of human creativity - just like the music of JS Bach. Over the past 100 years, the theory has been tested through various experiments and in different ways.
 
“The discovery of gravitational waves was the last hurdle to overcome in making this absolutely unfaltering. I am therefore thrilled by the discovery. It is absolutely astounding to imagine that the equations used to make the predictions about the gravitational-wave emissions when two gravitational whirlpools collide - as discovered on 14 September 2015 by LIGO - are basically Einstein's original equations that were published way back in 1916 - in other words, 100 years ago.
 
“The LIGO detectors have been operational since the early 1990s, but they had to undergo several stages of upgrades before being sensitive enough to make detections. LIGO is currently in its final stage, and is expected to function at optimal sensitivity only within a year or two. To be able to conduct the measurements at this stage is therefore a fantastic achievement, since much more funding will certainly be deposited in the project,” Prof Meintjes says.

Description: Prof Pieter Meintjes Tags: Prof Pieter Meintjes

Prof Pieter Meintjes
Photo: Charl Devenish

The search for gravitational waves by means of the Square Kilometre Array (SKA) is one of the focus points in research by both Prof Meintjes and PhD student, Jacques Maritz. This involves the study of radio signals from pulsars that might show signs of effects by gravitational waves. They are looking for signs of gravitational waves. The gravitational waves discovered and studied in this manner would naturally vary much more slowly than the signal discovered from the two colliding gravitational waves.
 
The discovery will definitely provide renewed impetus to the Square Kilometre Array (SKA) Project to use the dispersion of pulsar signals, and to search for the impact of gravitational waves on signals as they travel through the universe. According to Prof Meintjes, the SKA will definitely contribute fundamentally to the Frontier research, which will provide a good deal of publicity for the UFS and South Africa, if significant contributions are made by local researchers in this field.

Video clip explaining gravitational waves

 

  • The Department of Physics will present a general, non-technical talk concerning the recent detection of gravitational waves by the 2 Laser Interferometer Gravitational Wave Observatories (LIGO):

Wednesday 24 February 2016
11:00-12:00
New lecture auditorium, Department of Physics

 

 

 

 

 

 

 

 

 

 

 

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept