Cited by 102Quantum and Classical ElectrodynamicsSolar and Space Plasma DynamicsRelativity and Gravitational Theory

Using plasma physics to weigh the photon

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Ryutov, D D·2007·Plasma Physics and Controlled Fusion

Abstract

The currently accepted value for the upper bound for the photon mass, m ph , is 22 orders of magnitude less than the electron mass. As the mass m ph is so incredibly small, it has essentially no effect on atomic and nuclear physics; and it is very difficult to improve this estimate by laboratory experiments. However, even a very small mass may have a significant effect on astrophysical phenomena occurring on a scale exceeding the photon Compton length (where for the currently accepted mass). A set of magnetohydrodynamic equations (assuming a finite photon mass) are used to analyze properties of the solar wind at Pluto's orbit. This yields an improved (reduced) by a factor of 70 estimate of the photon mass. Possible opportunities and challenges for the further reduction of the upper limit for m ph based on the properties of larger-scale astrophysical objects are discussed.

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Crossref · 10.1088/0741-3335/49/12b/s40

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  • At present the most stringent and secure limit on the photon mass comes from the measurement of the magnetic field in the solar wind: m_A < 2 × 10^-51 g, or λ_A > 2 × 10^13 cm.

    “At present the most stringent and secure limit on the photon mass comes from the measurement of the magnetic field in the solar wind: m A &lt; 2 × 10 -51 g, or λ A &gt; 2 × 10 13 cm [51].”

    From Electrodynamics on cosmological scales (2016) · cites this paper as [51]

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Authors
Ryutov, D. D.
Affiliations
Lawrence Livermore National Laboratory (US)
Corresponding author
Ryutov, D D
Venue
Plasma Physics and Controlled Fusion
Published
2007-11-19
Volume
49
Issue
12B
Pages
B429-B438
ISSN
  • 0741-3335 (ISSN-L)
  • 1361-6587
OpenAlex
W2086164747
Cited by
102
References
1
Citations by year
2026: 3 · 2025: 6 · 2024: 7 · 2023: 8 · 2022: 6 · 2021: 11 · 2020: 6 · 2019: 12 · 2018: 6 · 2017: 7 · 2016: 13 · 2015: 2 · 2014: 2 · 2013: 1 · 2012: 5
FWCI
0.82
Type
journal article
Language
en
Open access
Locations
  • Plasma Physics and Controlled Fusion (publishedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
  • University of North Texas Digital Library (University of North Texas) (submittedVersion)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum and Classical Electrodynamics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Solar and Space Plasma Dynamics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Relativity and Gravitational Theory
Keywords
photon mass, solar wind, magnetohydrodynamic equations, Compton wavelength, astrophysical constraints, plasma physics

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