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188 Publications visible to you, out of a total of 188
Ex Luna, Scientia: The Lunar Occultation eXplorer (LOX) and the Future of MeV \ensuremathγ-Ray Astrophysics

Abstract

Not specified

Authors: Richard Miller, Marco Ajello, Katie Auchettl, John Beacom, Peter Bloser, Adam Burrows, Anna Frebel, Chris Fryer, Dieter Hartmann, Peter Hoeflich, Aimee Hungerford, Mark Leising, Laura Lopez, Peter Milne, Patrick Peplowski, Friedrich Roepke, Daniel Scolnic, Ivo Seitenzahl, Lih-Sin The, C. Alex Young, LOX Team

Date Published: 1st Apr 2022

Publication Type: InProceedings

Dynamics in a stellar convective layer and at its boundary: Comparison of five 3D hydrodynamics codes

Abstract

Not specified

Authors: R. Andrassy, J. Higl, H. Mao, M. Mocák, D. G. Vlaykov, W. D. Arnett, I. Baraffe, S. W. Campbell, T. Constantino, P. V. F. Edelmann, T. Goffrey, T. Guillet, F. Herwig, R. Hirschi, L. Horst, G. Leidi, C. Meakin, J. Pratt, F. Rizzuti, F. K. Röpke, P. Woodward

Date Published: 1st Mar 2022

Publication Type: Journal

Models of pulsationally assisted gravitationally confined detonations with different ignition conditions

Abstract

Not specified

Authors: F. Lach, F. P. Callan, S. A. Sim, F. K. Röpke

Date Published: 1st Mar 2022

Publication Type: Journal

Analytic models of the spectral properties of gravitational waves from neutron star merger remnants

Abstract

Not specified

Authors: Theodoros Soultanis, Andreas Bauswein, Nikolaos Stergioulas

Date Published: 1st Feb 2022

Publication Type: Journal

Type Iax supernovae from deflagrations in Chandrasekhar mass white dwarfs

Abstract

Not specified

Authors: F. Lach, F. P. Callan, D. Bubeck, F. K. Röpke, S. A. Sim, M. Schrauth, S. T. Ohlmann, M. Kromer

Date Published: 1st Feb 2022

Publication Type: Journal

Slow White Dwarf Mergers as a New Galactic Source of Trans-Iron Elements

Abstract

Not specified

Authors: Umberto Battino, Claudia Lederer-Woods, Claudia Travaglio, Friedrich Konrad Röpke, Brad Gibson

Date Published: 2022

Publication Type: Journal

Simulations of hydrodynamic phenomena in stellar interiors

Abstract (Expand)

This thesis presents multidimensional hydrodynamic simulations of stellar interiors with a focus on dynamical phenomena at low Mach numbers using the Seven-League Hydro (SLH) code. A better understanding … of these phenomena is crucial to improve the modeling of stellar evolution. It is demonstrated that suitable numerical methods are required to avoid that numerical artifacts and spurious dissipation dominate the actual physical flow. Three-dimensional simulations of convective helium shell burning are used to measure the entrainment of mass into the convective region. This aids the parametrization of entrainment in one-dimensional evolution calculations. Furthermore, the excitation of waves by core convection is simulated and the results are analyzed regarding their physical plausibility and agreement with observations. These simulations demonstrate that the current set of numerical methods used by the SLH code is promising regarding future, more realistic simulations of astrophysical flows.

Author: Leonhard Horst

Date Published: 10th Dec 2021

Publication Type: Doctoral Thesis

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