TY - JOUR
T1 - Ultrarelativistic black hole formation
AU - East, William E.
AU - Pretorius, Frans
PY - 2013/3/7
Y1 - 2013/3/7
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.110.101101
DO - 10.1103/PhysRevLett.110.101101
M3 - Article
C2 - 23521246
AN - SCOPUS:84874872357
VL - 110
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 10
M1 - 101101
ER -