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pro vyhledávání: '"JOHNSON, ERIC T."'
Autor:
Zingale, Michael, Bhargava, Khanak, Brady, Ryan, Chen, Zhi, Guichandut, Simon, Johnson, Eric T., Katz, Max, Clark, Alexander Smith
Stellar evolution is driven by the changing composition of a star from nuclear reactions. At the late stages of evolution and during explosive events, the timescale can be short and drive strong hydrodynamic flows, making simulations of astrophysical
Externí odkaz:
http://arxiv.org/abs/2411.12491
We build on the simplified spectral deferred corrections (SDC) coupling of hydrodynamics and reactions to handle the case of nuclear statistical equilibrium (NSE) and electron/positron captures/decays in the cores of massive stars. Our approach blend
Externí odkaz:
http://arxiv.org/abs/2403.14786
Autor:
Johnson, Eric T., Zingale, Michael
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 surface of the star as a flame. Recent multidimensional work has looked in
Externí odkaz:
http://arxiv.org/abs/2402.02013
Simulating complex astrophysical reacting flows is computationally expensive -- reactions are stiff and typically require implicit integration methods. The reaction update is often the most expensive part of a simulation, which motivates the explorat
Externí odkaz:
http://arxiv.org/abs/2312.14195
Autor:
Chen, Zhi, Johnson, Eric T., Katz, Max, Clark, Alexander Smith, Boyd, Brendan, Zingale, Michael
We describe the AMReX-Astrophysics framework for exploring the sensitivity of astrophysical simulations to the details of a nuclear reaction network, including the number of nuclei, choice of reaction rates, and approximations used. This is explored
Externí odkaz:
http://arxiv.org/abs/2312.02836
Autor:
Zingale, Michael, Chen, Zhi, Rasmussen, Melissa, Polin, Abigail, Katz, Max, Clark, Alexander Smith, Johnson, Eric T.
We study the coupling of hydrodynamics and reactions in simulations of the double detonation model for Type Ia supernovae. When assessing the convergence of simulations, the focus is usually on spatial resolution; however, the method of coupling the
Externí odkaz:
http://arxiv.org/abs/2309.01802
Autor:
Clark, Alexander Smith, Johnson, Eric T., Chen, Zhi, Eiden, Kiran, Willcox, Donald E., Boyd, Brendan, Cao, Lyra, DeGrendele, Christopher J., Zingale, Michael
We describe pynucastro 2.0, an open source library for interactively creating and exploring astrophysical nuclear reaction networks. We demonstrate new methods for approximating rates and using detailed balance to create reverse rates, show how to bu
Externí odkaz:
http://arxiv.org/abs/2210.09965
Autor:
Dowd, Patrick F.1 (AUTHOR) eric.johnson2@usda.gov, Johnson, Eric T.1 (AUTHOR)
Publikováno v:
International Journal of Plant Biology. Sep2024, Vol. 15 Issue 3, p673-682. 10p.
Publikováno v:
In Plant Gene March 2024 37
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