Zelmani Core Collapse Simulation Package

Here we provide Cactus/Einstein Toolkit modules (called "Thorns") for 3D stellar collapse and core-collapse supernova simulations.

We provide the following Zelmani Thorns. These will eventually become part of the Einstein Toolkit:

Note that we keep Zelmani thorns in a git version control repository on bitbucket.org. For the time being, we provide tarballs of our thorns:

  • ZelmaniStarMapper: ZelmaniStarMapper_20161117.tar.bz2
    This thorn takes a presupernova stellar model and maps it to the 3D grid. The initial metric and lapse is set based on the weak-field Newtonian approximation in isotropic coordinates. The initial extrinsic curvature and shift are set to zero. If you use this thorn or derive another thorn from it, please consider citing Ott 2007.

  • PNSMapper: PNSMapper_20161117.tar.bz2
    This thorn takes a postbounce profile from GR1D (in a special format -- to be documented soon), solves the Hamiltonian Constraint in 1D under the assumption of zero shift and maximal slicing, and then maps the result onto the 3D Zelmani grid. If you use this thorn or a derived version, please cite Roberts et al. 2016.

  • ZelmaniShockTracker2: ZelmaniShockTracker2_20161117.tar.bz2
    Tracks the 3D location of the shock front on a second spherical grid and tells the AMR driver to enlarge the refinement level tracking the shock when necessary. Please cite Ott et al. 2013 when using this thorn or a code derived from it.

  • ZelmaniQuadWaveExtract: ZelmaniQuadWaveExtract_20161117.tar.bz2
    Quadrupole wave extraction based on rest mass density and velocity. Outputs the first time derivative of the mass quadrupole tensor. If you use this thorn or a code derived from it, please consider citing Ott 2007.

  • ZelmaniAnalysis: ZelmaniAnalysis_20161117.tar.bz2
    An analysis thorn that computes a variety of volume integrals for approximate analysis quantities (e.g., a local gravitational mass estimate, the local angular momentum content etc.). If you use ZelmaniAnalysis or a derived version, please consider citing Ott 2007.

  • CoreCollapseControl: CoreCollapseControl_20161117.tar.bz2
    A utility thorn that (1) activates refinement levels during core collapse based on a central-density criterion, (2) checks for core bounce based on a central-density or entropy criterion, (3) changes output frequency before bounce. If you use CoreCollapseControl or a derivative of it, please consider citing Ott 2007.

  • ZelmaniLeak: ZelmaniLeak_20161117.tar.bz2
    Our neutrino leakage scheme that computes a gray optical depth estimate along radial rays for electron neutrinos, electron antineutrinos, and heavy-lepton neutrinos (nux), and then computes local energy and lepton number loss terms. Optionally, energy can be deposited based on a luminosity, flux factor, and mean energy estimate for electron and electron antineutrinos. Details can be found in Ott et al. 2012, Ott et al. 2013, and O'Connor & Ott 2010. Please cite O'Connor & Ott 2010 and Ott et al. 2012 if you use ZelmaniLeak or derivatives of it.

  • ZelmaniM1: ZelmaniM1_20161117.tar.bz2
    Our two-moment neutrino radiation transport solver with Minerbo closure. ZelmaniM1 needs neutrino opacities in NuLib format. ZelmaniM1 includes gravitational redshifts, provides the neutrino stress-energy tensor to the spacetime solver (through the TmunuBase interface), and handles neutrino-matter coupling. The present version of ZelmaniM1 does not include velocity dependence and inelastic scattering.If you use ZelmaniM1 or derivatives of it, please cite Roberts et al. 2016, ApJ 831, 98.

The following individuals have contributed to the development of Zelmani: Ernazar Abdikamalov, Harald Dimmelmeier, Peter Diener, Roland Haas, Ian Hawke, Frank Löffler, Philip Mösta, Evan O'Connor, Christian Ott, David Radice, Sherwood Richers, Luke Roberts, Christian Reisswig, Erik Schnetter, Ulrich Sperhake, Burkhard Zink

The development of Zelmani was supported by the following Institutions, agencies, foundations, and grants:

  • California Institute of Technology, Louisiana State University, Perimeter Institute for Theoretical Physics, and Max-Planck-Institut für Gravitationsphysik
  • U.S. National Science Foundation: Award Numbers OCI-0905046, AST-0855535, AST-1212170, AST-1205732, AST-1333520, PHY-1151197, PHY-1212460, PHY-1404569, ACI-1440083.
  • Sherman Fairchild Foundation
  • Alfred P. Sloan Foundation
  • Max-Planck-Gesellschaft