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  Gravitational redshift and the vacuum index of refraction

Wilhelm, K., & Dwivedi, B. N. (2019). Gravitational redshift and the vacuum index of refraction. Astrophysics and Space Science, 364: 26. doi:10.1007/s10509-019-3513-4.

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 Creators:
Wilhelm, Klaus1, Author              
Dwivedi, Bhola N., Author
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1Department Sun and Heliosphere, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832289              

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 Abstract: A physical process of the gravitational redshift was described in an earlier paper (Wilhelm and Dwivedi, New Astron. 31:8, 2014). This process did not require any information for the emitting atom neither on the local gravitational potential U nor on the speed of light c. Although it could be shown that the correct energy shift of the emitted photon resulted from energy and momentum conservation principles and the speed of light at the emission site, it was not obvious how this speed is controlled by the gravitational potential. The aim of this paper is to describe a physical process that can accomplish this control. We determine the local speed of light c by deducing a gravitational index of refraction nG as a function of the potential U assuming a specific aether model, in which photons propagate as solitons. Even though an atom cannot locally sense the gravitational potential U (cf. Müller et al., Nature 467:E2, 2010) the gravitational redshift will nevertheless be determined by U (cf. Wolf et al., Nature 467:E1, 2010)—mediated by the local speed of light c.

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Language(s): eng - English
 Dates: 2019-02-142019
 Publication Status: Published online
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1007/s10509-019-3513-4
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Title: Astrophysics and Space Science
Source Genre: Journal
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Publ. Info: Dordrecht : Springer Netherlands
Pages: - Volume / Issue: 364 Sequence Number: 26 Start / End Page: - Identifier: ISSN: 0004-640X
ISSN: 1572-946X
CoNE: https://pure.mpg.de/cone/journals/resource/0004-640X