Germany’s members of the Euclid Consortium have played a significant role in producing the mission’s first large set of survey data which the European Space Agency has just released. Researchers from the Argelander Institute for Astronomy (AIfA) of the University of Bonn have been involved in these activities. The data includes stunning images of deep fields with a breathtaking number of 26 million galaxies, many showing their detailed structures. More than 380,000 galaxies have been characterized according to their shapes and distances. Nevertheless, this impressive milestone is only a foretaste of what we can expect in the coming years. 

A delegation from Kwame Nkrumah University of Science and Technology (KNUST) in the Ghanaian city of Kumasi has taken part in a German Physical Society symposium, also extending a memorandum of understanding with the University of Bonn during the visit.

From Monday, January 27 to Wednesday, January 29, 2025, 31 employees from the various workshops, the FTD and the PI administration traveled to CERN together. The aim of the excursion was to give non-scientific staff an insight into the experiments at CERN in which the Physikalisches Institut is involved.

The ATLAS collaboration at the Large Hadron Collider (LHC) reported the first observation of top quarks in collisions between lead ions in a talk held at CERN last week. Members of the research group of Prof. Dr. Matthias Schott from the Physikalisches Institut at the University of Bonn have been contributing to this new study. The observation of top-quark pairs represents a significant step forward in heavy-ion collision physics, paving the way for new measurements of the quark–gluon plasma that is created in these collisions and delivering fresh insights into the nature of the strong force that binds protons, neutrons and other composite particles together.

The University of Bonn has been successful twice in the funding line for the Synergy Grants from the European Research Council (ERC) with other partners. The GravNet project is building a global detector network to search for high-frequency gravitational waves. The CeLEARN project coordinated by the Max Planck Institute for Neurobiology of Behavior – CAESAR aims to decode how single cells learn from their environment. The ERC uses Synergy Grants to support research groups in which different skills, knowledge, and resources are brought together in order to tackle ambitious research questions. The projects will receive several million euros of support in the next six years.

Physicists at the University of Bonn and the University of Kaiserslautern-Landau (RPTU) have created a one-dimensional gas out of light. This has enabled them to test theoretical predictions about the transition into this exotic state of matter for the first time. The method used in the experiment by the researchers could be used for examining quantum effects. The results have been published in the journal “Nature Physics.”

In her ERC Starting Grant project, “PiCo—Towards constraining the Pillars of our Cosmological model using combined probes”, Assistant Professor Andrina Nicola from the Argelander Institute for Astronomy at the University of Bonn will be exploring two fundamental questions of modern physics: What mechanism gave rise to the primordial fluctuations seeding all the structures seen in the Universe today? And what is the cause of the Universe’s late-time accelerated expansion?

Thousands of light particles can merge into a type of “super photon” under certain conditions. Researchers at the University of Bonn have now been able to use “tiny nano molds” to influence the design of this so-called Bose-Einstein condensate. This enables them to shape the speck of light into a simple lattice structure consisting of four points of light arranged in quadratic form. Such structures could potentially be used in the future to make the exchange of information between multiple participants tap-proof. The results have now been published in the journal Physical Review Letters.