Abstract
We study the head-on collision of fluid particles well within the kinetic energy dominated regime (γ=8 to 12) by numerically solving the Einstein-hydrodynamic equations. We find that the threshold for black hole formation is lower (by a factor of a few) than simple hoop conjecture estimates, and, moreover, near this threshold two distinct apparent horizons first form postcollision and then merge. We argue that this can be understood in terms of a gravitational focusing effect. The gravitational radiation reaches luminosities of 0.014 c5/G, carrying 16±2% of the total energy.
Original language | English (US) |
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Article number | 101101 |
Journal | Physical review letters |
Volume | 110 |
Issue number | 10 |
DOIs | |
State | Published - Mar 7 2013 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)