Collision of an innermost stable circular orbit particle around a Kerr black hole

  title={Collision of an innermost stable circular orbit particle around a Kerr black hole},
  author={Tomohiro Harada and Masashi Kimura},
  journal={Physical Review D},
We derive a general formula for the center-of-mass (CM) energy for the near-horizon collision of two particles of the same rest mass on the equatorial plane around a Kerr black hole. We then apply this formula to a particle which plunges from the innermost stable circular orbit (ISCO) and collides with another particle near the horizon. It is found that the maximum value of the CM energy E{sub cm} is given by E{sub cm}/(2m{sub 0}){approx_equal}1.40/{sup 4{radical}}(1-a{sub *}{sup 2}) for a… Expand

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