Relativistic equilibrium velocity distribution to improve standard solar models

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The current standard solar models can be improved by substituting the relativistic equilibrium velocity distribution for the Maxwellian velocity distribution. The relativistic equilibrium velocity distribution is close- fitting to the Maxwellian velocity distribution in the low-velocity part and substantially different from the Maxwellian velocity distribution in the high-velocity part, and vanishes at the velocity of light. If adopted in standard solar models, it will lower solar neutrino fluxes, change solar neutrino energy spectra but maintain solar sound speeds.