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Double Images from a Single Black Hole
General Relativity and Quantum Cosmology · Submitted 13 Oct 2015
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim In this paper, we illustrate the new result that in the case of octupole distortions of a Schwarzschild black hole the local observer sees two shadows or two images for this single black hole, i.e., also an eyebrow-like structure.
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The abstract, sentence by sentence
In the simulations of the multi-black holes and merging black holes a larger primary image and a secondary smaller image which looks like an eyebrow and the deformation of the shadows have been observed. However, this kind of eyebrow-like structure was considered as unique feature of multi black hole systems. In this paper, we illustrate the new result that in the case of octupole distortions of a Schwarzschild black hole the local observer sees two shadows or two images for this single black hole, i.e., also an eyebrow-like structure. Presence of two images in our case is remarkable, as we have only one black hole, however, the observer sees two dark images of this single black hole.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | In the simulations of the multi-black holes and merging black holes a larger primary image and a secondary smaller image which looks like an eyebrow and the deformation of the shadows have been observed. | background 0.94 | 0.43 | 0.04 | asserted 1.00 |
| s1 | However, this kind of eyebrow-like structure was considered as unique feature of multi black hole systems. | background 0.65 | 0.06 | 0.02 | asserted 0.99 |
| s2 | In this paper, we illustrate the new result that in the case of octupole distortions of a Schwarzschild black hole the local observer sees two shadows or two images for this single black hole, i.e., also an eyebrow-like structure. | result 0.63 | 0.91 | 0.91 | asserted 1.00 |
| s3 | Presence of two images in our case is remarkable, as we have only one black hole, however, the observer sees two dark images of this single black hole. | interpretation 0.58 | 0.88 | 0.24 | asserted 1.00 |
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The paper
Original abstract
In the simulations of the multi-black holes and merging black holes a larger primary image and a secondary smaller image which looks like an eyebrow and the deformation of the shadows have been observed. However, this kind of eyebrow-like structure was considered as unique feature of multi black hole systems. In this paper, we illustrate the new result that in the case of octupole distortions of a Schwarzschild black hole the local observer sees two shadows or two images for this single black hole, i.e., also an eyebrow-like structure. Presence of two images in our case is remarkable, as we have only one black hole, however, the observer sees two dark images of this single black hole.
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How the literature uses it
4 arXiv papers cite this in 5 sentences
Papers citing it · 2 sentences without a confident label
Cites it as background 3 papers
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For some work on BH shadows in different models see [ref] , and in particular [ref] for perturbative EdGB BHs.
Shadows of Einstein-dilaton-Gauss-Bonnet black holes · Introduction · 0.93
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Select approaches include analyzing the shadow characteristics of Kerr black holes with scalar hair [ref] , a five-dimensional Myers-Perry black hole [ref] , distorted Schwarzschild [ref] and Kerr black holes [ref] , as well as the possibility of observing double images from a single black hole [ref] .
Black hole shadows in fourth-order conformal Weyl gravity · Introduction · 0.96
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Among such physical processes are gravitational lensing (see, e.g., [ref] ), periastron shift (see, e.g., [ref] ), the Lense-Thirring effect (see, e.g., [ref] ), and gravitational spinoptics (see, e.g., [ref] ).
Geodesic motion around a distorted static black hole · INTRODUCTION · 0.96
What it cites · 10 sentences without a confident label
Cites as background 2 papers
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Shadows for black holes in modified gravity [ref] , and the five-dimensional rotating Myers-Perry black hole [ref] have also been considered.
Shadow of five-dimensional rotating Myers-Perry black hole · Introduction · 0.96
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Shadows for black holes in modified gravity [ref] , and the five-dimensional rotating Myers-Perry black hole [ref] have also been considered.
Black Holes in Modified Gravity (MOG) · Introduction · 0.96
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