Filter and export

Publications

What is a Publication?
6 Publications visible to you, out of a total of 6
Singularity-EOS: Performance Portable Equations of State and Mixed Cell Closures

Abstract (Expand)

We present Singularity-EOS, a new performance-portable library for equations of state and related capabilities. Singularity-EOS provides a large set of analytic equations of state, such as the Gruneisen … equation of state, and tabulated equation of state data under a unified interface. It also provides support capabilities around these equations of state, such as Python wrappers, solvers for finding pressure-temperature equilibrium between multiple equations of state, and a unique modifier framework, allowing the user to transform a base equation of state, for example by shifting or scaling the specific internal energy. All capabilities are performance portable, meaning they compile and run on both CPU and GPU for a wide variety of architectures.

Authors: Jonah M. Miller, Daniel A. Holladay, Jeffrey H. Peterson, Christopher M. Mauney, Richard Berger, Anna Pietarila Graham, Karen C. Tsai, Brandon Barker, Alexander Holas, Ann E. Mattsson, Mariam Gogilashvili, Joshua C. Dolence, Chad D. Meyer, Sriram Swaminarayan, Christoph Junghans

Date Published: 1st Nov 2024

Publication Type: Journal

Thermonuclear explosions as Type II supernovae

Abstract

Not specified

Authors: Alexandra Kozyreva, Javier Morán-Fraile, Alexander Holas, Vincent A. Bronner, Friedrich K. Röpke, Nikolay Pavlyuk, Alexey Mironov, Dmitry Tsvetkov

Date Published: 1st Apr 2024

Publication Type: Journal

Faint calcium-rich transient from a double detonation of a 0.6 M⊙ carbon-oxygen white dwarf star

Abstract (Expand)

We have computed a three-dimensional hydrodynamic simulation of the merger between a massive (0.4 M_⊙) helium white dwarf (He WD) and a low-mass (0.6 M_⊙) carbon-oxygen white dwarf (CO WD). Despite the … low mass of the primary, the merger triggers a thermonuclear explosion as a result of a double detonation, producing a faint transient and leaving no remnant behind. This type of event could also take place during common-envelope mergers whenever the companion is a CO WD and the core of the giant star has a sufficiently large He mass. The spectra show strong Ca lines throughout the first few weeks after the explosion. The explosion only yields <0.01 M_⊙of ^56Ni, resulting in a low-luminosity SN Ia-like lightcurve that resembles the Ca-rich transients within this broad class of objects, with a peak magnitude of M_\mathrmbol ≈-15.7 mag and a rather slow decline rate of ∆m_15^\mathrmbol≈1.5 mag. Both, its lightcurve-shape and spectral appearance, resemble the appearance of Ca-rich transients, suggesting such mergers as a possible progenitor scenario for this class of events.

Authors: Javier Morán-Fraile, Alexander Holas, Friedrich K Röpke, Rüdiger Pakmor, Fabian R N Schneider

Date Published: 4th Mar 2024

Publication Type: Journal

Family dispute: do Type IIP supernova siblings agree on their distance?

Abstract

Not specified

Authors: Géza Csörnyei, Christian Vogl, Stefan Taubenberger, Andreas Flörs, Stéphane Blondin, Maria Gabriela Cudmani, Alexander Holas, Sabrina Kressierer, Bruno Leibundgut, Wolfgang Hillebrandt

Date Published: 1st Feb 2023

Publication Type: Journal

On the fate of the secondary white dwarf in double-degenerate double-detonation Type Ia supernovae

Abstract

Not specified

Authors: R. Pakmor, F. P. Callan, C. E. Collins, S. E. de Mink, A. Holas, W. E. Kerzendorf, M. Kromer, P. G. Neunteufel, John T. O’Brien, F. K. Röpke, A. J. Ruiter, I. R. Seitenzahl, Luke J. Shingles, S. A. Sim, S. Taubenberger

Date Published: 1st Dec 2022

Publication Type: Journal

On the energy consumption of online and on-site lectures

Abstract

Not specified

Authors: Alexander Holas, Catherine Y. Koch, Joachim Leibold, Alesia Prendi, Tim P. Schlachta, Anna Sophia Schmid, Leonard Schmitt

Date Published: 22nd Jun 2022

Publication Type: Journal

Powered by
 (v.1.14.2)
About HITS Publication SEEK | About HITS-Publication-SEEK | Funding and Programmes | Credits
Copyright © 2008 - 2023 The University of Manchester and HITS gGmbH