Critical phenomena and relativistic gravitational collapse

Details Critical phenomena and relativistic gravitational collapse Critical phenomena and relativistic gravitational collapse

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994gregr..26..379a&link_type=abstract

General Relativity and Gravitation, Volume 26, Issue 4, pp.379-384

Physics

4

Scientific paper

Recent calculations have shown the existence of critical phenomena in general relativity associated with the collapse of wavepackets of massless fields that are near, in parameter space, the onset of black hole formation (the critical point). Two physically distinct systems have been explored: collapse of spherically-symmetric massless scalar field and collapse of vacuum, axisymmetric gravitational waves. Nonlinear effects dominate near the critical point. Black-hole mass serves as an order parameter and has a power-law dependence on critical separation in the supercritical region of parameter space. Remarkably, the values of the critical exponent of the power law are nearly identical in the two systems. The nonlinearity induces the fields to oscillate. Each successive oscillation is an echo, obeying a spatial and temporal scaling relation.

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