5,000 accretion disk trajectories from a double neutron star merger from Sprouse et al. ApJ 962 79 (2024)

This dataset contains 5,000 trajectories from the 1.2 second long accretion disk simulation (with central black hole) of Sprouse et al. ApJ 962 79 (2024). Individual trajectories are contained in a folder labeled "trace_{tid}" where {tid} is the unique name of the trajectory. Each of these folders contains three files.

The "initx.dat" file:

The "initx.dat" file provides the initial mass fraction of the ejected material at a prescribed starting temperature and density using the SFHo equation of state.

The columns of the "initx.dat" file are: Z (proton number), A (mass number), and X (mass fraction).

The last column, X, should sum to unity by definition.

The "metadata.dat" file:

The "metadata.dat" file provides additional information about the ejected material.

This file defines the trace id {tid}, the ejected mass, the maximum temperature reach in the simulation, the starting time, temperature, and density used to intialize the "initx.dat" file. 

The ejected mass associated with the trajectory can be used for the relative weighting of each trajectory.

Units of associated quantities are defined in the file header (first line).

The "trajectory.dat" file:

The "trajectory.dat" file provides the time-dependent evolution of temperature (T), density (rho), radius (R) and electron fraction (Ye).

This is the primary peace of information needed to run a nucleosynthesis network in post processing to determine the resultant abundances.

Units of associated quantities are defined in the file header (first line).