Thanassis Psaltis
We use big machines and computers to study how stars that blow up in space create the stuff we are made of.
M.Sc. position in nuclear astrophysics
We are seeking a motivated M.Sc. student to join the nuclear astrophysics group at Saint Mary's University, starting in September 2027.
Our group investigates how nuclear reactions shape the production of elements in stars and stellar explosions. We combine experiments with stable and radioactive ion beams, nuclear reaction modelling, computational nucleosynthesis and astronomical observations to understand environments such as supernovae and classical novae.
Research opportunities
The successful candidate will be able to contribute to projects in several areas, including:
- Experimental nuclear astrophysics: Connecting nucleosynthesis models to measurements of astrophysically important nuclear reactions, including experiments at facilities such as TRIUMF (Canada), Argonne National Laboratory (USA), and RIKEN (Japan).
- Nuclear reaction rates and uncertainties: Studying how uncertainties in nuclear properties affect astrophysical nucleosynthesis predictions and identifying priorities for future experimental campaigns.
- Nucleosynthesis in stellar explosions: Modelling the production of heavy elements in supernovae and neutrino-driven outflows, and investigating the origin of abundance patterns observed in metal-poor stars.
- Presolar grains and stellar nucleosynthesis: Using isotopic signatures preserved in stardust grains to investigate the conditions and nuclear reactions responsible for element production.
Projects will be developed in consultation with the successful candidate, taking into account their interests and background.
What we are looking for
Applicants should have, or be completing, a B.Sc. in Physics, Astrophysics or a related discipline, and meet the admission requirements for the M.Sc. programs in Astronomy or Applied Science at Saint Mary's University (minimum GPA of 3.00/4.3).
Experience with scientific programming or computational physics is an asset, but previous experience in nuclear astrophysics is not required. We are particularly interested in students who enjoy combining different areas of physics, are curious about the connection between nuclear reactions and astronomical observations and are motivated to develop their computational and research skills.
Funding and environment
The position offers an annual funding package of $35,000 before tuition and fees, consisting of research funding and teaching assistantship support through Saint Mary's University. Additional funding may be available through competitive scholarships, including the NSERC Canada Graduate Research Scholarship – Master's (CGRS M).
The student will join an active and collaborative research group, with opportunities to work with researchers at Canadian and international institutions and participate in experimental nuclear astrophysics collaborations.
How to apply
Interested students are encouraged to contact Thanassis Psaltis (Assistant Professor, Department of Astronomy and Physics, Saint Mary's University) at thanassis.psaltis@smu.ca with:
- a brief introduction and description of their research interests,
- a CV, and
- an unofficial undergraduate transcript.
Please include M.Sc. Nuclear Astrophysics in the subject line.
Applications will be considered until the position is filled, but expressions of interest received by November 15, 2026 will receive full consideration. Canadian citizens and permanent residents are also encouraged to apply for the NSERC Canada Graduate Research Scholarship – Master's (CGRS M), which can provide additional funding for one year. The application deadline is December 1, 2026.
More information about our research: https://psaltisa.github.io/projects
Current Research
Learn more about our ongoing projects in experimental and theoretical nuclear astrophysics. Find recent publications, talks, and current projects.
Research Publications Presentations
The carbon in your DNA, the oxygen you are breathing, and the indium in the computer screen you are using right now—all were forged during the lives and explosive deaths of stars. Our research seeks to answer a fundamental question: “What is the origin of the chemical elements?” The rarest elements, such as gold, silver, and platinum, are created in the universe’s most violent explosions, including supernovae and neutron star mergers. We aim to determine precisely what comes out of these extreme environments, using a combination of experimental, theoretical, and observational approaches.
We collaborate with researchers worldwide, proposing and conducting experiments at leading nuclear physics facilities, including TRIUMF (Canada), RIKEN (Japan), GSI (Germany), FRIB, Argonne National Lab, and TUNL (United States). These experiments allow us to recreate the nuclear processes that happen in the most exotic stellar explosions in the universe.
Science should be accessible to everyone. Our group engages with the public through lectures, hands-on workshops for students, and collaborations with science festivals both in Canada and internationally. Through these initiatives, we aim to inspire curiosity about the universe and bring the story of the stars closer to all audiences.