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Stellar & Nuclear Astrophysics

The TAP Stellar and Nuclear Astrophysics Initiative brings together researchers developing simulations of many stellar phenomena and the nuclear physics details that drive these potentially transient events. We aim to bridge models with updated and informed experimental nuclear physics efforts to provide state-of-the-art predictions for multi-messenger observational missions. 

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For meeting times and locations contact Stellar & Nuclear Astrophysics Initiative Leads Carl Fields, Mathieu Renzo, and Pooja Siwach

Upcoming Stellar & Nuclear Astrophysics Lectures

Fall 2026

Erika Holmbeck

Erika Holmbeck, Lawrence Livermore National Laboratory

Visit Dates:  November 16-20, 2026

Stellar & Nuclear Astrophysics Initiative Lecture
Date:  November 16, 2026

Title:  TBA

This is a new initiative! 

Affiliated Research Groups

Bin Boom Research Group

Bin Boom Research Group

Brief description: The Bin Boom group at the University of Arizona, led by Mathieu Renzo, studies the evolution, interactions, explosions, and afterlives of massive stars, especially those in binary systems. Through numerical modelling and analytical calculations, the group explores mass transfer and stellar mergers, supernovae and compact-object formation, runaway stars, x-ray binaries and gravitational-wave sources, including the nuclear processes that shape stellar evolution and explosions.  The group brings researchers at the undergraduate, graduate, and postdoctoral levels, who meet weekly to discuss ongoing projects and recent advances in stellar astrophysics.

Carl Fields

Fields Research Group

Star Stuff @ St3warD, Fields research group at UA focuses on developing multi-dimensional simulations of the evolution of massive stars to core-collapse, explosion dynamics, compact object formation, and the multi-messenger signals produced using various large scale multi-physics simulation frameworks.  


 

Siwach Research Group

Siwach Research Group

The Siwach group studies the nuclear many-body problem using concepts and tools from quantum information science. The group develops quantum algorithms for simulating nuclear systems and investigates computational complexity through measures such as entanglement and quantum magic in nuclear and neutrino physics. This work bridges traditional nuclear structure theory with emerging quantum computing platforms and strengthens the department’s profile in quantum science. Notable contributions include efficient encoding schemes for mapping nuclear systems onto quantum hardware and entanglement-based diagnostics for collective neutrino dynamics in supernova environments, positioning the group at the forefront of an area of growing strategic national interest.

Banner Image Credit:  Thesis, Carl Fields 2021