Modeling Mergers of Known Galactic Systems of Binary Neutron Star (2016)


Here you can find the companion movies of our work on the simulation of Real Binary Neutron Stars present in our Galaxy and refer to simulation from our recent work: A. Feo, R. De Pietri, F. Maione and F. Loeffler, Modeling Mergers of Known Galactic Systems of Binary Neutron Star. Classical and Quantum Gravity, 34, no. 3, (2017) arXiv:1608.02810.

Movies of the evolution of Binary Neutron Star merger



The J0453+1559 System


M1=1.174   , Mtot=2.733

M2=1.559   , Mchirp=1.1753










The J1906+0746 System


M1=1.291   , Mtot=2.877

M2=1.322   , Mchirp=1.230





The B1913+16 System


M1=1.4398   , Mtot=2.613

M2=1.3886   , Mchirp=1.137





The B1934+12 System


M1=1.333   , Mtot=2.678

M2=1.345   , Mchirp=1.165






Background material

The investigation has been done using only publicly available open source software, in particular, the Einstein Toolkit code deployed for the dynamical evolution and the LORENE code for the generation of the initial models. All of the source code and parameters used for the simulations have been made publicly available. This not only makes possible to re-run and re-analyze our data; it also enables others to directly build upon this work for future research.

The modified code as well as the post processing (Python) scripts can be download (COMING SOON) from the SVN server:
svn --username=anonymous checkout https://einstein.pr.infn.it/svn/numrel/pub/ #(passwd: anon)

We kindly ask to cite ( Phys. Rev. D 93, 064047, arXiv:1509.08804) and (arXiv:1605.03424)) if you find any of the material here useful for your own research.

Instructions

In order to checkout the source code necessary to re-run our simulations, use the GetComponents script:

  ./GetComponents https://einstein.pr.infn.it/gravity/Research/BNS2015.th
  

Compiling the Einstein Toolkit is outside of the scope of this document, but the following tutorial might help: Einstein Toolkit New Users Tutorial.