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13 May 2022 | Story Leonie Bolleurs | Photo Leonie Bolleurs
Astrophysics
The Astrophysics Research Group in the UFS Department of Physics recently collaborated with the Institute of Astrophysics of Andalusia (IAA) in Spain and the University College of Dublin (UCD) in Ireland, to install a robotic telescope at the Boyden Observatory. Pictured here, are from the bottom, Teboho Rakotsoana and Simon Rakotsoana from the UFS; Emilio J Garcia from the Institute of Astrophysics of Andalusia; Prof Pieter Meintjes; and Prof Antonio M Carrillo from UCD.

The Astrophysics Research Group in the Department of Physics at the University of the Free State (UFS) is part of an international collaboration with the Institute of Astrophysics of Andalusia (IAA) in Spain and the University College of Dublin (UCD) in Ireland, which focuses on measuring the brightness of transient sources. Knowledge gained from studying these cosmic X-ray sources, which seem to appear in the sky for a short time before disappearing, will lead to a more complete and better understanding of the universe, believes Prof Pieter Meintjes, Professor of Physics and Head of the Astrophysics Programme in the Department of Physics.

To facilitate these observations, a robotic telescope network has been established, with the Boyden Observatory selected as one of the sites for BOOTES 6 (a Burst Observer and Optical Transient Exploring System).

The UFS and the IAA started working on this project more than two years ago. The foundation and pier were built through a local tender, and in January 2020, part of the dome of the structure housing the telescope arrived by ship. Due to the COVID-19 pandemic there were some delays, resulting in the crew from Spain only arriving in South Africa with the telescope and hardware in November 2021, but having to return to their country without completing the installation. They returned in April, and in early May completed assembling the telescope in collaboration with UFS researchers and technicians.

Robotic telescope opportunity to further own research

The main scientific objective of the robotic telescope is to observe and monitor the optic counterparts of gamma-ray bursts as quickly as possible when detected from space or other ground-based observatories.

Prof Meintjes says they will use the telescope to observe these transient sources that goes into an eruptive phase for a short span of time. “Since BOOTES has an enormously fast slew rate, it can start observations of erupting sources within a few seconds, which allows the Astrophysics Research Group to get data very quickly. This will certainly give us an edge over other international astronomy groups that are also involved in the same type of research,” says Prof Meintjes, the local coordinator of the project who is overseeing the whole operation locally. 

He explains the importance of monitoring these packets of enormous energy. “By observing the optical afterglow of the gamma-ray bursts, we can establish its point of origin in space. Furthermore, the shape of the optical afterglow light curve gives insight into the type of mechanism behind the gamma-ray burst, i.e., whether the burst is produced by a collision between two neutron stars or by the explosion of a hypernova event.” 

The knowledge gained with research made possible by the robotic telescope will lead to a more complete and better understanding of the universe. – Prof Peter Meintjes

The UFS Astrophysics Research Group, with its research focus on high-energy astronomy and the physics behind gamma-ray bursts, has a particular interest in this project. As the local custodians of the project and in terms of a memorandum of understanding, the group is guaranteed a certain amount of telescope time for its own in-house observation programmes.

Project expands UFS’ international research footprint

Besides the opportunity for knowledge exchange, this project establishes Bloemfontein as a region where research of international quality is being done and will help to attract talented learners to the UFS. “The successful operation of the robotic telescope may also draw more international groups to bring robotic telescopes to Boyden, thus expanding our international research footprint,” he adds. 

The fact that the Boyden Observatory is in the Southern Hemisphere and has access to the galactic centre region with its host of very interesting astronomical objects and the Magellanic Clouds, makes it a very attractive site for astronomical research,” says Prof Meintjes. 

(Dr Pat van Heerden from the UFS Department of Physics. Photo: Supplied)

“We also have a number of years of experience in robotic telescopes in the sense that we have been hosting the Watcher telescope, operated by the University College Dublin in Ireland, since 2001. Once mounted in middle May 2022, this will then be Boyden’s second robotic telescope.”

News Archive

Little ‘Devil’s Worm’ on Top 10 New Species list
2012-05-29

 

Halicephalobus mephisto (Devil’s Worm)
Photo: Supplied
29 May 2012

A minuscule little worm found and researched with the assistance of researchers at the university has made it onto the list of Top 10 New Species of the world. The list was published by the International Institute for Species Exploration (IISE) at Arizona State University and a committee of scientists from around the world. It lists the top ten new species described in 2011.

An article on the new worm species appeared in the authoritative journal Nature in June 2011.
 
Prof. Esta van Heerden, leader of the university’s research team, says, “In our wildest dreams, we could not have imagined that we would get so much reaction from the worm’s discovery. We had to do so many checks and balances to convince Nature that the worm could survive in the old and warm water. We were very excited when the article was accepted but the media reaction was unbelievable.”
 
The tiny nematode, Halicephalobus mephisto (Devil’s Worm) of about 0,5 mm in length, is the deepest-living terrestrial multi-cellular organism on earth. It was discovered in the Beatrix gold mine near Welkom at a depth of 1,3 km.
 
The IISE says in a statement the species is remarkable for surviving immense underground pressure as well as high temperatures. The borehole water where this species lives has not been in contact with the earth’s atmosphere for the last 4 000 to 6 000 years.  
 
This top-10 list includes a sneezing monkey; a beautiful, but venomous jellyfish; a fungus named after a popular TV cartoon character; a night-blooming orchid; an ancient walking cactus creature; and a tiny wasp. A vibrant poppy, a giant millipede and a blue tarantula also made it onto the list.
 
The international selection committee made its choice from more than 200 nominations. They looked for species that captured the attention because they were unusual or because they had bizarre traits. Some of the new species have interesting names.
 
Prof. Van Heerden says, “We are very thankful for the exposure that the university gets as a result of the inclusion on the list and we enjoy the international cooperation immensely.”

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