This is an ABYSS code simulating self-consistent gravity for stars and black holes.

How to run this code

e.g., abyss.exe -c config.txt

-c|--config [name of a configuration (parameter) file]

structure of a configuration file

Filename        = [name of initial condition]
eta             = [constant for the timestepper]
FixNumNeighbor  = [number of neighbors (N^(1/2) is recommended)]
InitialRadius   = [initial radius of neighbor (in pc)]
StopTime        = [duration of simulations (in yr)]
dtOutput        = [frequency of output (in yr)]
OutputDirectory = [name of output directory]

How to compile this code

CUDA is mendatory as of now.

On-going Projects

• GPU optimization by Minyong Jung
• Few-body dynamics & Post-Newtonian treatment by Eunwoo Chung
• CPU parallelization by Yongseok Jo
• Integration with a hydrodynamic code (Enzo-Abyss) by Yongseok Jo

Future Projects

• Tidal disruption for black hole
• Gravitational wave
• X-ray Binary (XRB)
• Cosmic ray
• Developement of engines for acceleration computation

For these projects, if interested, please feel free to contact Yongseok Jo (me@yongseokjo.com).

Contributions

• Yongseok Jo @ SkAI Institute
• Eunwoo Chung @ Seoul National Univeristy
• Minyong Jung @ Seoul National University
• Seoyoung Kim @ University of Wisconsin-Madison

Thanks to

• Ji-hoon Kim @ Seoul National University
• Greg L. Bryan @ Columbia University

Contact

Yongseok Jo @ me@yongseokjo.com

Enzo-Abyss repository : https://github.com/YongseokJo/enzo-nbody