Numerical ray tracing shows that a first-order gravitational perturbation makes a Schwarzschild black hole shadow oscillate, stretch, and develop self-similar fractal boundary structures over time.
Possible imprints of cosmic strings in the shadows of galactic black holes
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abstract
We examine the shadow cast by a Kerr black hole pierced by a cosmic string. The observable images depend not only on the black hole spin parameter and the angle of inclination, but also on the deficit angle yielded by the cosmic string. The dependence of the observable characteristics of the shadow on the deficit angle is explored. The imprints in the black hole shadow left by the presence of a cosmic string can serve as a method for observational detection of such strings.
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gr-qc 1years
2019 1verdicts
CONDITIONAL 1representative citing papers
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Effect of gravitational wave on shadow of a Schwarzschild black hole
Numerical ray tracing shows that a first-order gravitational perturbation makes a Schwarzschild black hole shadow oscillate, stretch, and develop self-similar fractal boundary structures over time.