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duetosymmetry committed Jan 23, 2025
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18 changes: 18 additions & 0 deletions _papers/Foucart:2024cjr.md
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title: "Neutrinos in colliding neutron stars and black holes"
authors: "Foucart, Francois"
jref:
doi:
date: 2024-10-04
arxiv: "2410.03646"
abstract: |
In this chapter, we provide an overview of the physics of colliding
black holes and neutron stars and of the impact of neutrinos on
these systems. Observations of colliding neutron stars play an
important role in nuclear astrophysics today. They allow us to study
the properties of cold nuclear matter and the origin of many heavy
elements (gold, platinum, uranium). We show that neutrinos
significantly impact the observable signals powered by these events
as well as the outcome of nucleosynthesis in the matter that they
eject into the surrounding intergalactic medium.
---
45 changes: 45 additions & 0 deletions _papers/Kidder:2016hev.md
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title: "SpECTRE: A task-based discontinuous Galerkin code for relativistic astrophysics"
authors:
- "Kidder, Lawrence E."
- "Field, Scott E."
- "Foucart, Francois"
- "Schnetter, Erik"
- "Teukolsky, Saul A."
- "Bohn, Andy"
- "Deppe, Nils"
- "Diener, Peter"
- "Hébert, François"
- "Lippuner, Jonas"
- "Miller, Jonah"
- "Ott, Christian D."
- "Scheel, Mark A."
- "Vincent, Trevor"
jref: "J.Comput.Phys. 335, 7061 (2017)"
doi: "10.1016/j.jcp.2016.12.059"
date: 2016-08-31
arxiv: "1609.00098"
abstract: |
We introduce a new relativistic astrophysics code, SpECTRE, that
combines a discontinuous Galerkin method with a task-based
parallelism model. SpECTRE's goal is to achieve more accurate
solutions for challenging relativistic astrophysics problems such as
core-collapse supernovae and binary neutron star mergers. The
robustness of the discontinuous Galerkin method allows for the use
of high-resolution shock capturing methods in regions where
(relativistic) shocks are found, while exploiting high-order
accuracy in smooth regions. A task-based parallelism model allows
efficient use of the largest supercomputers for problems with a
heterogeneous workload over disparate spatial and temporal scales.
We argue that the locality and algorithmic structure of
discontinuous Galerkin methods will exhibit good scalability within
a task-based parallelism framework. We demonstrate the code on a
wide variety of challenging benchmark problems in (non)-relativistic
(magneto)-hydrodynamics. We demonstrate the code's scalability
including its strong scaling on the NCSA Blue Waters supercomputer
up to the machine's full capacity of <math altimg="si1.gif"
display="inline"
overflow="scroll"><mn>22</mn><mo>,</mo><mn>380</mn></math> nodes
using <math altimg="si2.gif" display="inline"
overflow="scroll"><mn>671</mn><mo>,</mo><mn>400</mn></math> threads.
---

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