Relativistic Disks as sources of the Kerr metric

Details Relativistic Disks as sources of the Kerr metric Relativistic Disks as sources of the Kerr metric

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phrvl..71.1669b&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 71, no. 11, p. 1669-1672.

Astronomy and Astrophysics

Astronomy

52

Black Holes (Astronomy), Disks (Shapes), Einstein Equations, Gravitational Fields, Red Shift, Schwarzschild Metric, Angular Momentum, Laplace Equation

Scientific paper

Many spacetimes are known which should represent gravitational fields outside rotating sources, but for which no satisfactory sources have been found. We indicate that these spacetimes can arise as the metrics of counterrotating thin disks of finite mass, consisting of two streams of collisionless particles, circulating in opposite directions with different velocities. We show how such disks can act as exact sources of all types of the Kerr metric. In their central regions they can produce ergoregions, the velocities can approach that of light, and the redshifts can become arbitrarily large.

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