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    • Keywords


      Black holes; gravitational collapse; horizon.

    • Abstract


      A simple, geometrical construction is given for three-dimensional spacetimes with negative cosmological constant that contain two particles colliding head-on. Depending on parameters like particle masses and distance, the combined geometry will be that of a particle, or of a black hole. In the black hole case the horizon is calculated. It is found that the horizon typically starts at a point and spreads into a closed curve with corners, which propagate along spacelike caustics and disappear as the horizon passes the particles.

    • Author Affiliations


      Dieter Brill1 Puneet Khetarpal2 Vijay Kaul1

      1. Department of Physics, University of Maryland, College Park, MD 20782, USA
      2. Rensselaer Polytechnic Institute, Troy, NY 12180, USA
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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