EARLY HYDRODYNAMIC EVOLUTION OF A STELLAR COLLISION

@article{Kushnir2014EARLYHE,
  title={EARLY HYDRODYNAMIC EVOLUTION OF A STELLAR COLLISION},
  author={Doron Kushnir and Boaz Katz},
  journal={The Astrophysical Journal},
  year={2014},
  volume={785}
}
The early phase of the hydrodynamic evolution following the collision of two stars is analyzed. Two strong shocks propagate from the contact surface and move toward the center of each star at a velocity that is a small fraction of the velocity of the approaching stars. The shocked region near the contact surface has a planar symmetry and a uniform pressure. The density vanishes at the (Lagrangian) surface of contact, and the speed of sound diverges there. The temperature, however, reaches a… 
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