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astro-ph.HE2025
Multi-dimensional Models of Mixed H/He Flames in X-ray Bursts
Eric T. Johnson, Michael Zingale
We investigate the properties of mixed H/He flames in X-ray bursts using 2D hydrodynamic simulations. We find that as the initial hydrogen abundance of the atmosphere increases, th…
astro-ph.HE2024
Hydrodynamical simulations of proton ingestion flashes in Type I X-ray Bursts
Simon Guichandut, Michael Zingale, Andrew Cumming
We perform the first multidimensional fluid simulations of thermonuclear helium ignition underneath a hydrogen-rich shell. This situation is relevant to Type I X-ray bursts on neut…
astro-ph.HE2024
Simulating Lateral H/He Flame Propagation in Type I X-ray Bursts
Eric T. Johnson, Michael Zingale
X-ray bursts are the thermonuclear runaway of a mixed H/He layer on the surface of a neutron star. Observations suggest that the burning begins locally and spreads across the surfa…