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) |
|---|---|
| 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)
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East, W. E., & Pretorius, F. (2013). Ultrarelativistic black hole formation. Physical review letters, 110(10), [101101]. https://doi.org/10.1103/PhysRevLett.110.101101