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22 March 2023 | Story Mariette Joubert | Photo Unsplash
Social work

South Africa celebrated Human Rights Day and World Social Work Day on 21 March 2023. Social work is a profession that advocates for the human rights of people as well as focuses on the responsibility that comes with these rights. Just as the Bill of Rights is the cornerstone of democracy and protects our rights, the social work code of ethics is the cornerstone that ensures quality social work services. 

The University of the Free State (UFS) second-year social work students took an oath on 22 March which binds them to the social work code of ethics. Social workers have the Global Agenda for Social Work and Social Development which consists of four pillars. Focus is drawn to the last pillar, Strengthening Recognition of the Importance of Human Relationships. Human relationships are the core of social work and social development. These relationships take various forms, including social, personal, interpersonal, and therapeutic relationships, among various people and in various settings. In relationships where people flourish, trust is crucial. In contrast, mistrust skews relationships in a negative way. 

Respecting diversity through joint social action

The Ubuntu pan-African philosophical framework is the greatest place to understand the significance of human relationships. To promote and strive for the strengthening of relationships, this year’s theme for Social Work Day is “Respecting Diversity Through Joint Social Action”. If we can stop criticising people that do not live, believe, or think according to our constructed standards of being, we will be able to do so much more as humanity. If we start embracing peoples’ diversities and take time to start building relationships with various people and bridge any existing gaps, we will realise that diversity is an integral aspect of changing the world in a positive manner. Corresponding to human rights and the theme of World Social Work Day, is the theme “Destigmatising intellectual disability through shifting attitudes” for Intellectual Disability Awareness Month [IDAM] which also takes place later in March. Another way through which we can start building relationships and embrace diversity is by participating in this year’s South African Federation for Mental Health challenge where CEOs of different institutions are challenged to spend one day in a wheelchair as part of an awareness-raising campaign to destigmatise intellectual disabilities.

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Two scientists part of team that discovers the source of the highest energy cosmic rays at the centre of the Milky Way
2016-03-22

Description: Giant molecular clouds  Tags: Giant molecular clouds

Artist's impression of the giant molecular clouds surrounding the Galactic Centre, bombarded by very high energy protons accelerated in the vicinity of the central black hole and subsequently shining in gamma rays.
Artist's impression: © Dr Mark A. Garlick/ H.E.S.S. Collaboration

Spotlight photo:
Dr Brian van Soelen and Prof Pieter Meintjes of the UFS Department of Physics.
Photo: Charl Devenish

H.E.S.S. (High Energy Stereoscopic System) scientists publically revealed their latest galactic discovery in the international science journal, Nature, on 16 March 2016. These scientists were able to pinpoint the most powerful source of cosmic radiation – which, up to now, remained a mystery.

Part of this team of scientists are Prof Pieter Meintjes and Dr Brian van Soelen, both in the University of the Free State (UFS) Department of Physics. Dr Van Soelen explains that they have discovered a proton PeVatron – a source that can accelerate protons up to energies of ~1 PeV (10^15 eV) – at the centre of the Milky Way. The supermassive black hole called Sagittarius A has been identified as the most plausible source of this unprecedented acceleration of protons.

The protons are accelerated to Very High Energy (VHE) gamma rays. The energy of these protons are 100 times larger than those achieved by the Large Hadron Collider at CERN (the European Organization for Nuclear Research).

According to Dr Van Soelen, the fact that this research has been published in Nature demonstrates the importance and pioneering nature of the research conducted by H.E.S.S. The H.E.S.S. observatory – operational in Namibia – is a collaboration between 42 scientific institutions in 12 countries.

In 2006, H.E.S.S. was awarded the Descartes Prize of the European Commission – the highest recognition for collaborative research – and in 2010 the prestigious Rossi Prize of the American Astronomical Society. The extent of the observatory’s significance places it among the ranks of the Hubble Space Telescope and the telescopes of the European Southern Observatory in Chile.

“The next generation VHE gamma-ray telescope,” Dr Van Soelen says, “will be the Cherenkov Telescope Array (CTA), which is currently in the design and development stage.” Both Dr Van Soelen and Prof Meintjes are part of this project as well.

H.E.S.S. has issued a complete statement about the paper published in Nature.

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