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arXiv · hep-ph/9309292

The Central Temperature of the Sun can be Measured via the $^7$Be Solar Neutrino Line

John N. Bahcall
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Abstract

A precise test of the theory of stellar evolution can be performed by measuring the difference in average energy between the neutrino line produced by ${\rm ^7Be}$ electron capture in the solar interior and the corresponding neutrino line produced in a terrestrial laboratory. The high temperatures in the center of the sun broaden the line asymmetrically, FWHM = 1.6~keV, and cause an average energy shift of 1.3~keV. The width of the $^7$Be neutrino line should be taken into account in calculations of vacuum neutrino oscillations.

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John N. Bahcall. 1993-09-20. The Central Temperature of the Sun can be Measured via the $^7$Be Solar Neutrino Line. https://doi.org/10.1103/physrevlett.71.2369

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