• Horizons in $2+1$-dimensional collapse of particles

• # Fulltext

https://www.ias.ac.in/article/fulltext/pram/069/01/0109-0118

• # 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

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

• # Pramana – Journal of Physics

Volume 97, 2023
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• # Editorial Note on Continuous Article Publication

Posted on July 25, 2019

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