Mimicking diffuse supernova antineutrinos with the Sun as a source

Details Mimicking diffuse supernova antineutrinos with the Sun as a source Mimicking diffuse supernova antineutrinos with the Sun as a source

2009-02-27

arxiv.org/abs/0902.4832v1

Phys.Atom.Nucl.73:609-613,2010

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

4 pages, 1 figure

Scientific paper

10.1134/S1063778810040058

Measuring the electron antineutrino component of the cosmic diffuse supernova neutrino background (DSNB) is the next ambitious goal for low-energy neutrino astronomy. The largest flux is expected in the lowest accessible energy bin. However, for E < 15 MeV a possible signal can be mimicked by a solar electron antineutrino flux that originates from the usual 8B neutrinos by spin-flavor oscillations. We show that such an interpretation is possible within the allowed range of neutrino electromagnetic transition moments and solar turbulent field strengths and distributions. Therefore, an unambiguous detection of the DSNB requires a significant number of events at E > 15 MeV.

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