Kasper Elm Heintz from DTU Space has been awarded the 'Astronomy & Astrophysics Award for Outstanding Early Career Researcher Article 2026' for his research on the early Universe.
The award is presented by the acknowledged journal 'Astronomy & Astrophysics' and is given for a scientific article that stands out among early-career researchers.
Kasper Elm Heintz receives the award for the article 'The JWST-PRIMAL archival survey', published in the journal and based on observations from the James Webb Space Telescope.
In the study, the astrophysicist analyses nearly 600 galaxies from the first billion years of cosmic history. He has also established the largest uniform spectroscopic dataset of galaxies from this early epoch to date.
New analytical approach
The work furthermore introduces a new method for analysing the physical properties of galaxies. The results show that the majority of the earliest galaxies are surrounded by large reservoirs of neutral hydrogen.
This provides new insight into how galaxies assemble and helps constrain the timeline of cosmic reionisation, which is a key phase in the evolution of the Universe.
Reionisation refers to the period when the Universe transitioned from being dark and neutral to becoming ionised and transparent to light. This transition is essential for our ability to observe distant galaxies today.
The phase is central to understanding when the first stars and galaxies formed, how the earliest structures evolved, and when light began to travel freely through space. Kasper Elm Heintz’s research provides observations from this critical epoch and helps clarify how rapidly reionisation occurred and which galaxies drove the process.
The study also makes its data publicly available to the research community in the form of uniformly processed spectra and catalogues.
Unanimously selected winner
According to the award committee, the article was selected unanimously from a large number of submissions.
The award will be presented officially to Kasper Elm Heintz at the European Astronomical Society Annual Meeting, which takes place from 29 June to 3 July 2026 in Lausanne, Switzerland.
