Can we see galaxies recede faster than the speed of light?
Vol. 35 No. 1 (2024), Re-publication
Vol. 35 No. 1 (2024)

Can we see galaxies recede faster than the speed of light?

Re-publication
https://doi.org/10.7146/kvant.167860
Published 2024-04-01
Peter Laursen
https://orcid.org/0000-0003-4207-0245
Peter Laursen
PDF (Dansk)

Keywords

Superluminale Galakser
Hubble-Lemaîtreloven
Kosmologiske Horisonter
Universets udvidelse
Kosmologi
Lysets Hastighed

How to Cite

Laursen, P. (2024). Can we see galaxies recede faster than the speed of light?. KVANT, 35(1). https://doi.org/10.7146/kvant.167860
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Abstract

If you are even slightly interested in physics, you have probably heard that nature has given us a fundamental speed limit: the speed of light. No matter how hard you try, you will never be able to travel faster than light. You may also know that the universe is expanding, and you may have even heard that the most distant galaxies are moving away from us at speeds that exceed the speed of light. But are these statements not contradictory? And even if some galaxies are receding faster than light, does that not mean we cannot see them? Contrary to popular belief, we are in fact able to see galaxies that are moving away from us faster than the speed of light.

https://doi.org/10.7146/kvant.167860
PDF (Dansk)

References

[1] A. Einstein (1905) "Zur Elektrodynamik bewegter Körper", Annalen der Physik, bind 322, side 891.

https://doi.org/10.1002/andp.19053221004

[2] A. Einstein (1916) "Die Grundlage der allgemeinen Relativitätstheorie", Annalen der Physik, bind 354, side 769.

https://doi.org/10.1002/andp.19163540702

[3] E. R. Harrison (2000) "Cosmology. The Science of the Universe", Cambridge University Press, Cambridge.

https://doi.org/10.1017/CBO9780511804540

[4] A. Friedmann (1922) "Über die Krümmung des Raumes", Zeitschrift für Physik, bind 10, side 377.

https://doi.org/10.1007/BF01332580

[5] G. Lemaître (1927) "Un Univers homogène de masse constante et de rayon croissant rendant compte de la vitesse radiale des nébuleuses extra-galactiques", Annales de la Société Scientifique de Bruxelles, bind 47, side 49.

[6] H. P. Robertson (1935) "Kinematics and World-Structure", Astrophysical Journal, bind 82, side 284.

https://doi.org/10.1086/143681

[7] H. P. Robertson (1936) "Kinematics and World-Structure II", Astrophysical Journal, bind 83, side 187.

https://doi.org/10.1086/143716

[8] H. P. Robertson (1936) "Kinematics and World-Structure III", Astrophysical Journal, bind 83, side 257.

https://doi.org/10.1086/143726

[9] A. G. Walker (1937) "On Milne's Theory of World-Structure", Proceedings of the London Mathematical Society, bind 42, side 90.

https://doi.org/10.1112/plms/s2-42.1.90

[10] E. Curtis-Lake m.fl. (2023) "Spectroscopic confirmation of four metal-poor galaxies at z = 10.3-13.", Nature Astronomy, bind 7, side 622.

[11] E. Hubble (1929) "A Relation between Distance and Radial Velocity among Extra-Galactic Nebulae", Proceedings of the National Academy of Science, bind 15, side 168.

https://doi.org/10.1073/pnas.15.3.168

[12] R. P. Kirshner (2004) "Hubble's diagram and cosmic expansion", Proceedings of the National Academy of Science, bind 101, side 8.

https://doi.org/10.1073/pnas.2536799100

[13] T.M. Davis og C.H. Lineweaver (2004) "Expanding Confusion: Common Misconceptions of Cosmological Horizons and the Superluminal Expansion of the Universe", Publications of the Astronomical Society of Australia, bind 21, side 97.

https://doi.org/10.1071/AS03040

[14] Wikipediaartikel om kvasaren APM 08279+5255: https://en.wikipedia.org/wiki/APM_08279+5255.

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