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Spinning Black Holes as Particle Accelerators · Around

2009

Spinning Black Holes as Particle Accelerators

Jacobson, Ted, Sotiriou, Thomas P.

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It has recently been pointed out that particles falling freely from rest at infinity outside a Kerr black hole can in principle collide with arbitrarily high center of mass energy in the limiting case of maximal black hole spin.

Here we aim to elucidate the mechanism for this fascinating result, and to point out its practical limitations, which imply that ultra-energetic collisions cannot occur near black holes in nature.

Built on

K. S. Thorne, “Disk Accretion Onto A Black Hole. 2. Evolution Of The Hole,” Astrophys. J. 191
1974
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T. Piran, J. Shaham, and J. Katz, “High Efficiency of the Penrose Mechanism for Particle Collisions,” Astrophys. J. Lett. 196
1975
Earlier work this paper cites.
T. Piran and J. Shaham, “Upper Bounds On Collisional Penrose Processes Near Rotating Black Hole Horizons,” Phys. Rev. D 16
1977
Earlier work this paper cites.

Similar

R. M. Wald, General Relativity
1984
Cited alongside, same era.
C. F. Gammie, S. L. Shapiro and J. C. McKinney, “Black Hole Spin Evolution,” Astrophys. J. 602
2004
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M. Banados, J. Silk and S. M. West, “Kerr Black Holes as Particle Accelerators to Arbitrarily High Energy,” Phys. Rev. Lett. 103
Original
2009
Cited alongside, same era.

Then

A. N. Baushev, Int. J. Mod. Phys. D 18
Original
2009
Closest in time.
E. Berti, V. Cardoso, L. Gualtieri, F. Pretorius and U. Sperhake, “Comment on ’Kerr Black Holes as Particle Accelerators to Arbitrarily High Energy’,” Phys. Rev. Lett. 103
Original
2009
Closest in time.

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