Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Swesty, F. Douglas"'
We present results of a performance study of an astrophysical radiation hydrodynamics code, V2D, on the Arm-based A64FX processor developed by Fujitsu. The code solves sparse linear systems, a task for which the A64FX architecture should be well suit
Externí odkaz:
http://arxiv.org/abs/2207.13251
Autor:
Calder, Alan C., Hoffman, Melissa M., Willcox, Donald E., Katz, Maximilian P., Swesty, F. Douglas, Ferson, Scott
We present early results from a study addressing the question of how one treats the propagation of incertitude, that is, epistemic uncertainty, in input parameters in astrophysical simulations. As an example, we look at the propagation of incertitude
Externí odkaz:
http://arxiv.org/abs/1805.09954
Autor:
Katz, Max P., Zingale, Michael, Calder, Alan C., Swesty, F. Douglas, Almgren, Ann S., Zhang, Weiqun
The Type Ia supernova progenitor problem is one of the most perplexing and exciting problems in astrophysics, requiring detailed numerical modeling to complement observations of these explosions. One possible progenitor that has merited recent theore
Externí odkaz:
http://arxiv.org/abs/1512.06099
Autor:
Swesty, F. Douglas, Myra, Eric S.
It is now generally agreed that multidimensional, multigroup, radiation hydrodynamics is an indispensable element of any realistic model of stellar-core collapse, core-collapse supernovae, and protoneutron star instabilities. We have developed a new,
Externí odkaz:
http://arxiv.org/abs/astro-ph/0607281
Autor:
Swesty, F. Douglas, Myra, Eric S.
Publikováno v:
J.Phys.Conf.Ser.16:380-389,2005
Understanding the explosion mechanism of core collapse supernovae is a problem that has plagued nuclear astrophysicists since the first computational models of this phenomenon were carried out in the 1960s. Our current theories of this violent phenom
Externí odkaz:
http://arxiv.org/abs/astro-ph/0507294
Autor:
Swesty, F. Douglas, Myra, Eric S.
We discuss recent advances in the radiative-hydrodynamic modeling of core collapse supernovae in multi-dimensions. A number of earlier attempts at fully radiation-hydrodynamic models utilized either the grey approximation to describe the neutrino dis
Externí odkaz:
http://arxiv.org/abs/astro-ph/0506178
Publikováno v:
Astrophys.J. 541 (2000) 937-958
The numerical modeling of binary neutron star mergers has become a subject of much interest in recent years. While a full and accurate model of this phenomenon would require the evolution of the equations of relativistic hydrodynamics along with the
Externí odkaz:
http://arxiv.org/abs/astro-ph/9911192
This article describes a comparison of two calculations of the merger of a binary neutron star (NS) system which is initially within the tidal instability as described by Rasio and Shapiro. The same initial data is used with one simulation involving
Externí odkaz:
http://arxiv.org/abs/astro-ph/9806022
We present initial results of our study of numerical methods for modeling neutron star mergers (NSMs) with simulations that perform the full hydrodynamic evolution required to capture tidal effects, particularly in the last several orbits. Our simula
Externí odkaz:
http://arxiv.org/abs/astro-ph/9806019
Autor:
Swesty, F. Douglas
One of the major difficulties encountered in modeling core collapse supernovae is obtaining an accurate description of the transport of neutrinos through the collapsed stellar core. The behavior of the neutrino distribution function transitions from
Externí odkaz:
http://arxiv.org/abs/astro-ph/9805303