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23 September 2020 | Story Rulanzen Martin
Prof Mongane Wally Serote said South Africa was created with people from all over who made this their home.

The Centre for Gender and Africa Studies (CGAS) prides itself in creating spaces for intellectual discourse. This was illustrated in a Heritage Day lecture webinar presented by National Poet Laureate, Prof Mongane Wally Serote. The lecture was in collaboration with the University of the Western Cape (UWC) and the Department of Sports, Arts and Culture.

The lecture took place on 23 September 2020. Dr Stephanie Cawood, director of CGAS was the programme director. 

Diversity is our biggest heritage

Prof Serote presented the webinar under the theme Going to Basics: The Reconstruction and Development Programme of the Source. “As South Africans, we came from everywhere and created a home here –- we are the microcosm of the world,” Prof Serote said as he started his lecture. He also said that diversity is the biggest heritage the country has, and that it is a cultural expression emanating from our most complex and difficult history.

The Constitution of our country is a piece of valuable evidence in the commitment to overcome our historical adversities. “Understanding our history seeks to persuade us as a nation, and to understand that change, is constant in the dynamism and dialectics of time,” said Prof Serote. He explained this by saying that, as a nation, we must become masters of knowledge of the constant systems of change and the management thereof.

“Since the outbreak of the coronavirus pandemic, we have quickly arrived at making fundamental changes and transformation,” he said. This is because the world is changing dramatically and very fast. “The biggest and most important lesson is that we dare not forget that humanity is one,” he said.

Social cohesion and nation building a shared responsibility 

As much as the webinar commemorated Heritage Day, it was also a poignant reminder of the role that universities have to place in society at large. “We at the UFS pride ourselves on providing space for debates. This is what we are hosting here today,” said Dr Chitja Twala, Vice-Dean of the Faculty of the Humanities at the UFS.  Dr Twala also said that Heritage Day is one of the milestone days on which “Africans pride themselves”.

The Deputy Minister of Sports, Arts and Culture, Nocawe Noncedo Mafu, referred to Dr Twala’s sentiment, saying that events such as these should be hosted “to foster social cohesion and nation building, which cannot succeed if it remains a project solely and exclusively owned by government”.  Deputy Minister Mafu reiterated that social cohesion and nation building should be a concern for the rest of the society. “I am therefore thrilled with this lecture and notably the partnership with the two universities," she said.

The national theme for Heritage Month 2020 is ‘Celebrating South Africa’s Living Legends.’

News Archive

UFS physicists publish in prestigious Nature journal
2017-10-16

Description: Boyden Observatory gravitational wave event Tags: Boyden Observatory, gravitational wave event, Dr Brian van Soelen, Hélène Szegedi, multi-wavelength astronomy 
Hélène Szegedi and Dr Brian van Soelen are scientists in the
Department of Physics at the University of the Free State.

Photo: Charl Devenish

In August 2017, the Boyden Observatory in Bloemfontein played a major role in obtaining optical observations of one of the biggest discoveries ever made in astrophysics: the detection of an electromagnetic counterpart to a gravitational wave event.
 
An article reporting on this discovery will appear in the prestigious science journal, Nature, in October 2017. Co-authors of the article, Dr Brian van Soelen and Hélène Szegedi, are from the Department of Physics at the University of the Free State (UFS). Both Dr Van Soelen and Szegedi are researching multi-wavelength astronomy.
 
Discovery is the beginning of a new epoch in astronomy
 
Dr van Soelen said: “These observations and this discovery are the beginning of a new epoch in astronomy. We are now able to not only undertake multi-wavelength observations over the whole electromagnetic spectrum (radio up to gamma-rays) but have now been able to observe the same source in both electromagnetic and gravitational waves.”
 
Until recently it was only possible to observe the universe using light obtained from astronomical sources. This all changed in February 2016 when LIGO (Laser Interferometer Gravitational-Wave Observatory) stated that for the first time they had detected gravitational waves on 14 September 2015 from the merger of two black holes. Since then, LIGO has announced the detection of two more such mergers. A fourth was just reported (27 September 2017), which was the first detected by both LIGO and Virgo. However, despite the huge amount of energy released in these processes, none of this is detectable as radiation in any part of the electromagnetic spectrum. Since the first LIGO detection astronomers have been searching for possible electromagnetic counterparts to gravitational wave detections. 
 
Large international collaboration of astronomers rushed to observe source
 
On 17 August 2017 LIGO and Virgo detected the first ever gravitational waves resulting from the merger of two neutron stars. Neutron star mergers produce massive explosions called kilonovae which will produce a specific electromagnetic signature. After the detection of the gravitational wave, telescopes around the world started searching for the optical counterpart, and it was discovered to be located in an elliptical galaxy, NGC4993, 130 million light years away. A large international collaboration of astronomers, including Dr Van Soelen and Szegedi, rushed to observe this source.
 
At the Boyden Observatory, Dr Van Soelen and Szegedi used the Boyden 1.5-m optical telescope to observe the source in the early evening, from 18 to 21 August. The observations obtained at Boyden Observatory, combined with observations from telescopes in Chile and Hawaii, confirmed that this was the first-ever detection of an electromagnetic counterpart to a gravitational wave event. Combined with the detection of gamma-rays with the Fermi-LAT telescope, this also confirms that neutron star mergers are responsible for short gamma-ray bursts.  
 
The results from these optical observations are reported in A kilonova as the electromagnetic counterpart to a gravitational-wave source published in Nature in October 2017.
 
“Our paper is one of a few that will be submitted by different groups that will report on this discovery, including a large LIGO-Virgo paper summarising all observations. The main results from our paper were obtained through the New Technology Telescope, the GROND system, and the Pan-STARRS system. The Boyden observations helped to obtain extra observations during the first 72 hours which showed that the light of the source decreased much quicker than was expected for supernova, classifying this source as a kilonova,” Dr Van Soelen said.

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