Understand
For an observer, the Black Hole (BH) shadow is the BH's apparent image in the sky due to the gravitational lensing of nearby radiation, emitted by an external source.
- A recent class of solutions dubbed Kerr BHs with scalar hair possess smaller shadows than the corresponding Kerr BHs and, under some conditions, novel exotic shadow shapes can arise.
- Thus, these hairy BHs could potentially provide new shadow templates for future experiments such as the Event Horizon Telescope.
- In order to obtain the shadows, the backward ray-tracing algorithm is briefly introduced, followed by numerical examples of shadows of Kerr BHs with scalar hair contrasting with the Kerr analogues.
Built on
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Similar
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2000
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D. Robinson, in The Kerr Spacetime: Rotating Black Holes in General Relativity
2009
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J. L. Jaramillo and E. Gourgoulhon, Mass and angular momentum in general relativity, in Mass and motion in general relativity
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T. Johannsen, Astrophys. J
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P. V. P. Cunha, C. A. Herdeiro, E. Radu and H. F. Rúnarsson, Phys. Rev. Lett
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P. V. P. Cunha, Black hole shadows
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C. A. Herdeiro and E. Radu, Class. Quant. Grav
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T. Johannsen, arXiv:1512.03818 [astro-ph.GA] (2016)
2016
Closest in time.
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