Speaker
Aubra Anthony
(University of Texas at Austin)
Description
Recent helioseismology results have pointed to the possible detection of high-frequency (periods of minutes to days) gravity-mode oscillation signals in the Sun. Periodic fluctuations in density, pressure and temperature (as would be caused by g-modes at the solar core) could potentially modulate the outgoing flux of solar neutrinos, through the close relationship between temperature and neutrino production. Density fluctuations could also affect the propagation of neutrinos through the Sun, through the MSW effect, because periodically-shifting matter densities could temporally vary the probability for neutrino oscillations to occur. The Sudbury Neutrino Observatory was an optimal laboratory for studying time dependence in the solar neutrino flux, due to excellent background elimination and real-time signal detection. This poster will show the searches that we performed with SNO neutrino data to identify any high-frequency periodic signal in the Sun, both on broad time scales, as well as those specifically relevant to recent g-mode detection claims.
Author
Aubra Anthony
(University of Texas at Austin)
