Advertisement

Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Reexamination of Possible Bimodality of GALLEX Solar-Neutrino Data

  • 50 Accesses

  • 3 Citations

Abstract

The histogram formed from published capture-rate measurements for the GALLEX solar-neutrino experiment is bimodal, showing two distinct peaks. However, the histogram formed from published measurements derived from the similar Gallium Neutrino Observatory (GNO) experiment is unimodal, showing only one peak. Nevertheless, the two experiments differ in run durations: GALLEX runs are either three weeks or four weeks (approximately) in duration, whereas GNO runs are all about four weeks in duration. When we form three-week and four-week subsets of the GALLEX data, we find that the relevant histograms are unimodal. The upper peak arises mainly from the three-week runs, and the lower peak from the four-week runs. The four-week subset of the GALLEX dataset is found to be similar to the GNO dataset. A recent re-analysis of GALLEX data leads to a unimodal histogram.

This is a preview of subscription content, log in to check access.

References

  1. Altmann, M., Balata, M., Belli, P., Bernabei, R., Burkert, E., Cattadon, C., et al.: 2000, Phys. Lett. B 490, 16.

  2. Altmann, M., Balata, M., Belli, P., Bellotti, E., Bernabei, R., Burkert, E., et al.: 2005, Phys. Lett. B 616, 174.

  3. Anselmann, P., Hampel, W., Heusser, G., Kiko, J., Kirsten, T., Laubenstein, M., et al.: 1993, Phys. Lett. B 314, 445.

  4. Anselmann, P., Hampel, W., Heusser, G., Kiko, J., Kirsten, T., Laubenstein, M., et al.: 1995, Phys. Lett. B 357, 237.

  5. Hampel, W., Heusser, G., Kiko, J., Kirsten, T., Laubenstein, M., Pernicka, E., et al.: 1996, Phys. Lett. B 388, 384.

  6. Hampel, W., Handt, J., Heusser, G., Kiko, J., Kirsten, T., Laubenstein, M., et al.: 1999, Phys. Lett. B 447, 127.

  7. Kaether, F.: 2007, www.ub.uni-heidelberg.de/archiv/7501/.

  8. Kirsten, T., Bellotti, E., Burkert, E., Cattadori, C., Cerichelli, G., Chiarini, M.: et al.: 2003, Nucl. Phys. B (Proc. Suppl.) 118, 33.

  9. Sturrock, P.A.: 2008, Solar Phys. 249, 1.

  10. Sturrock, P.A., Scargle, J.D.: 2001, Astrophys. J. 550, L101.

  11. Sturrock, P.A., Scargle, J.D.: 2009, Astrophys. J. 750, in press.

Download references

Author information

Correspondence to P. A. Sturrock.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Sturrock, P.A. Reexamination of Possible Bimodality of GALLEX Solar-Neutrino Data. Sol Phys 260, 245–250 (2009). https://doi.org/10.1007/s11207-009-9462-2

Download citation

Keywords

  • Count Rate
  • Solar Phys
  • Distinct Peak
  • GALLEX
  • Conventional Interpretation