Zobrazeno 1 - 10
of 7 171
pro vyhledávání: '"Katz, M."'
Autor:
Piro, L., Colpi, M., Aird, J., Mangiagli, A., Fabian, A. C., Guainazzi, M., Marsat, S., Sesana, A., McNamara, P., Bonetti, M., Rossi, E. M., Tanvir, N. R., Baker, J. G., Belanger, G., Canton, T. Dal, Jennrich, O., Katz, M. L., Luetzgendorf, N.
The European Space Agency is studying two large-class missions bound to operate in the decade of the 30s, and aiming at investigating the most energetic and violent phenomena in the Universe. $Athena$ is poised to study the physical conditions of bar
Externí odkaz:
http://arxiv.org/abs/2211.13759
Reacting astrophysical flows can be challenging to model because of the difficulty in accurately coupling hydrodynamics and reactions. This can be particularly acute during explosive burning or at high temperatures where nuclear statistical equilibri
Externí odkaz:
http://arxiv.org/abs/2206.01285
For astrophysical reacting flows, operator splitting is commonly used to couple hydrodynamics and reactions. Each process operates independent of one another, but by staggering the updates in a symmetric fashion (via Strang splitting) second order ac
Externí odkaz:
http://arxiv.org/abs/2103.13193
Magnetohydrodynamic (MHD) turbulence on a $\beta$-plane with an in-plane mean field, a system which serves as a simple model for the solar tachocline, is investigated analytically and computationally. We first derive two useful analytic constraints:
Externí odkaz:
http://arxiv.org/abs/2103.08091
We continue to investigate two-dimensional laterally propagating flames in type I X-ray bursts using fully compressible hydrodynamics simulations. In the current study we relax previous approximations where we artificially boosted the flames. We now
Externí odkaz:
http://arxiv.org/abs/2102.00051
Modelling long-time convective flows in the interiors of stars is extremely challenging using conventional compressible hydrodynamics codes due to the acoustic timestep limitation. Many of these flows are in the low Mach number regime, which allows u
Externí odkaz:
http://arxiv.org/abs/1910.12979
Autor:
Zingale, M., Almgren, A. S., Sazo, M. Barrios, Bell, J. B., Eiden, K., Harpole, A., Katz, M. P., Nonaka, A. J., Willcox, D. E., Zhang, W.
We describe recent developments to the Castro astrophysics simulation code, focusing on new features that enable our simulations of X-ray bursts. Two highlights of Castro's ongoing development are the new integration technique to couple hydrodynamics
Externí odkaz:
http://arxiv.org/abs/1910.12578
Simulations in stellar astrophysics involve the coupling of hydrodynamics and nuclear reactions under a wide variety of conditions, from simmering convective flows to explosive nucleosynthesis. Numerical techniques such as operator splitting (most no
Externí odkaz:
http://arxiv.org/abs/1908.03661
Autor:
Zingale, M., Eiden, K., Cavecchi, Y., Harpole, A., Bell, J. B., Chang, M., Hawke, I., Katz, M. P., Malone, C. M., Nonaka, A. J., Willcox, D. E., Zhang, W.
We discuss the challenges of modeling X-ray bursts in multi-dimensions, review the different calculations done to date, and discuss our new set of ongoing simulations. We also describe algorithmic improvements that may help in the future to offset so
Externí odkaz:
http://arxiv.org/abs/1810.04720