Histogram Analysis of Gallex, GNO and Sage Neutrino Data: Further Evidence for Variability of the Solar Neutrino Flux

Details Histogram Analysis of Gallex, GNO and Sage Neutrino Data: Further Evidence for Variability of the Solar Neutrino Flux Histogram Analysis of Gallex, GNO and Sage Neutrino Data: Further Evidence for Variability of the Solar Neutrino Flux

2000-11-11

arxiv.org/abs/astro-ph/0011228v1

Astrophys.J. 550 (2001) L101-L104

Astronomy and Astrophysics

Astrophysics

PDF, 11 pages, 2 figures, submitted to Astrophysical Journal Letters

Scientific paper

10.1086/319482

If the solar neutrino flux were constant, as is widely assumed, the histogram of flux measurements would be unimodal. On the other hand, sinusoidal or square-wave modulation (either periodic or stochastic) may lead to a bimodal histogram. We here present evidence that the neutrino flux histogram is in fact bimodal. We analyze all available data from gallium experiments, coordinating results from the GALLEX and GNO experiments into one data set, and adopting results from the SAGE experiment as another data set. The two histograms, from the two data sets, are consistent in showing peaks in the range 45-75 SNU and 90-120 SNU, with a valley in between. By combining the data into one data set, we may form more detailed histograms; these strengthen the case that the flux is bimodal. A preliminary statistical analysis indicates that the bimodal character of the solar neutrino flux is highly significant. Since the upper peak is close to the expected flux (120-140 SNU), we may infer that the neutrino deficit is due to time-varying attenuation of the flux produced in the core. We estimate the time scale of this variation to be in the range 10-60 days. Attenuation that varies on such a time scale is suggestive of the influence of solar rotation, and points towards a process involving the solar magnetic field in conjunction with a nonzero neutrino magnetic moment.

Affiliated with

Also associated with

No associations

Rating

Histogram Analysis of Gallex, GNO and Sage Neutrino Data: Further Evidence for Variability of the Solar Neutrino Flux does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Histogram Analysis of Gallex, GNO and Sage Neutrino Data: Further Evidence for Variability of the Solar Neutrino Flux, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Histogram Analysis of Gallex, GNO and Sage Neutrino Data: Further Evidence for Variability of the Solar Neutrino Flux will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-452782