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"It's getting away from us!" - Black Hole Horizons and Relative Speed — arXiv:2609.05524

Source: arXiv (en)
Original: https://arxiv.org/abs/2609.05524
License (as archived): CC0-1.0
Archived: 2026-10-16T16:33:58.077Z
SHA-256 of the archived text: 6b3ccc3dcc9a9d48e7489e439784f67d71713c081c9b792203b015c6350099d8
Stable URL of this page: https://metraipolis.com/documento/dc_cdcc225dd87e

How to cite

"It's getting away from us!" - Black Hole Horizons and Relative Speed — arXiv:2609.05524 — arXiv (en), https://arxiv.org/abs/2609.05524 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_cdcc225dd87e (Metraipolis archive dc_cdcc225dd87e, sha256 6b3ccc3dcc9a9d48e7489e439784f67d71713c081c9b792203b015c6350099d8)

BibTeX

@misc{dccdcc225dd87e,
  title = {"It's getting away from us!" - Black Hole Horizons and Relative Speed — arXiv:2609.05524},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2609.05524},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_cdcc225dd87e; sha256 6b3ccc3dcc9a9d48e7489e439784f67d71713c081c9b792203b015c6350099d8},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2609.05524. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Black holes hold considerable fascination for the general public and students alike, and are commonly included in general-science courses on astronomy or modern physics. But teaching about the basics of black holes poses a considerable challenge: Any rigorous description requires concepts and techniques from general relativity, Einstein's theory of geometry and gravitation. And any half-way rigorous introduction to that theory, including the required mathematical tools, is significantly beyond the level of general-science courses. Inevitably, accounts of relativistic physics at the introductory undergraduate level make use of analogies, approximations and simplified models to teach about topics like black holes, gravitational waves, gravitational lensing, or cosmology. The purpose of this article is to given an account of one particular set of analogies for teaching about black holes, all of which are based on modelling the motions of observers in the vicinity of the black hole and rely on the concept of (relative) speed to describe properties of the black hole. While most elements of what I am about to describe can be found in the existing literature, I am not aware of any text that attempts to pull them together into a unified picture at a suitable level of presentation for undergraduate-level teaching; that is the goal of the present text.

Tema degli esploratori: fisica e astronomia (retro-catalogo arXiv: annunci del 2026-09-09 in gr-qc).
Categorie arXiv: Popular Physics (physics.pop-ph) ; General Relativity and Quantum Cosmology (gr-qc).
Pagina del lavoro: https://arxiv.org/abs/2609.05524 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-10-16T16:01:37.082Z dalla pagina https://arxiv.org/catchup/gr-qc/2026-09-09?abs=True (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).