Using astrophysical jets for establishing an upper limit for the photon mass

Details Using astrophysical jets for establishing an upper limit for the photon mass Using astrophysical jets for establishing an upper limit for the photon mass

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aps..dppfm1007r&link_type=abstract

American Physical Society, 46th Annual Meeting of the Division of Plasma Physics, 15-19 November, 2004, Savannah, GA. MEETING I

Physics

Plasma Physics

Scientific paper

Finite photon mass is compatible with general principles of the relativity theory; how small it (the mass) actually is has to be established experimentally. The presently accepted upper limit [1], E-22 of the electron mass, is established [2] based on the observations of the Solar wind. This estimate corresponds to the photon Compton length of L=3E6 km. I discuss possible ways of improving this estimate based on the properties of those of astrophysical jets where the pinch force is important for establishing the jet structure. It turns out that, if the jet radius is much greater than L, both pinch equilibrium and stability become very different from the massless photon case. In particular, the equilibrium pressure maximum coincides with the maximum of the current density. These new features are often incompatible with the observations, providing a way for improving the estimate of the photon mass by orders of magnitude. Work performed for the U.S. DOE by UC LLNL under contract W-7405-Eng-48. [1] S. Eidelman, and Particle Phys. Group. "Review of Particle Physics," Phys. Lett. B592, p.1, 2004; [2] D.D. Ryutov. Plasma Phys. Contr. Fus., 39, p.A73, 1997.

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