Nuclear Decay Variations: New Solar Observations and Possible New Flare Predictors

Details Nuclear Decay Variations: New Solar Observations and Possible New Flare Predictors Nuclear Decay Variations: New Solar Observations and Possible New Flare Predictors

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh43b1821s&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SH43B-1821

Astronomy and Astrophysics

Astrophysics

[7599] Solar Physics, Astrophysics, And Astronomy / General Or Miscellaneous

Scientific paper

There are many ground-based solar observatories, and more than a few space-based observatories. They give highly detailed and high-cadence information about the Sun’s surface and atmosphere, and (by way of helioseismology) less detailed information about the radiative zone and convection zone. Neutrino observatories can in principle yield information about the solar core, but very little has been achieved along those lines so far. The recent discovery of variability of beta-decay rates offers a new opportunity. There are now three lines of evidence linking this variability to the Sun. One promising scenario is that the solar neutrino flux can induce beta decays. Current evidence indicates that beta-decay measurements have much higher sensitivity and can run at much higher cadence, than direct measurements of the neutrino flux. Such measurements therefore offer the prospect of greatly improved information about the structure and activity of the solar core. In addition, there is tantalizing evidence of a linkage between decay-rate fluctuations and solar flares. These recent discoveries therefore offer the prospect of a new type of solar observatory that will open a window on the solar core, that may offer a predictive capability concerning solar activity, and which—compared with other types of observatory—should be quite inexpensive.

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