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A moving medium simulation of Schwarzschild black hole optics

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Kjell Rosquist

General Relativity and Quantum Cosmology · Submitted 22 Sep 2003

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim The resulting form of the metric leads to a new coordinate system in which the Schwarzschild vacuum is written in Gordon's form.

how it is stated · asserted 1.00 read the record →

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arXiv IDgr-qc/0309104 (version 2)
Pith IDL6E5PCXM, Pith's permanent record of this paper and its review
CitationKjell Rosquist. "A moving medium simulation of Schwarzschild black hole optics." arXiv:gr-qc/0309104 (2003). https://pith.science/paper/L6E5PCXM
Claim paper

The compiled record

The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

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Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 3,525 input tokens, $0.0001 reported.

What the abstract itself states, as probabilities: claims first 0.05 · states limitation 0.06 · human participants 0.01 · controlled comparison 0.02 · randomized assignment 0.01 · states quantitative result 0.04 · compares with prior results 0.58 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v2. Results and the main claim are underlined; .

An explicit fluid flow simulation of electromagnetic wave propagation in the gravitational field of a Schwarzschild black hole is given. The fluid has a constant refractive index and a spherically symmetric inward directed flow. The resulting form of the metric leads to a new coordinate system in which the Schwarzschild vacuum is written in Gordon's form. It is shown that a closely related coordinate system interpolates between the Kerr-Schild and Painleve-Gullstrand coordinates.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#sentencerolethe authors' own workstates the main conclusionstrength
s0 An explicit fluid flow simulation of electromagnetic wave propagation in the gravitational field of a Schwarzschild black hole is given. contribution 0.95 0.93 0.29 asserted 1.00
s1 The fluid has a constant refractive index and a spherically symmetric inward directed flow. method 0.98 0.66 0.06 asserted 1.00
s2 The resulting form of the metric leads to a new coordinate system in which the Schwarzschild vacuum is written in Gordon's form. result 0.91 0.85 0.30 asserted 1.00
s3 It is shown that a closely related coordinate system interpolates between the Kerr-Schild and Painleve-Gullstrand coordinates. result 0.87 0.86 0.14 asserted 1.00

What kind of paper the classifier reports this is: simulation study 0.63 · evidence from simulation or computation 0.82.

What was examined, and what was not

sources read
  • arXiv listing abstract v2
not examined
  • full text
  • figures and tables
  • references and citing sentences
  • relations to other papers
levels run
  • P abstract
not run
  • S sections
  • T body sentences
  • C citations
  • R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper
Original abstract

An explicit fluid flow simulation of electromagnetic wave propagation in the gravitational field of a Schwarzschild black hole is given. The fluid has a constant refractive index and a spherically symmetric inward directed flow. The resulting form of the metric leads to a new coordinate system in which the Schwarzschild vacuum is written in Gordon's form. It is shown that a closely related coordinate system interpolates between the Kerr-Schild and Painleve-Gullstrand coordinates.

Human review

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References
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1 arXiv paper cite this in 1 sentence

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

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