Variability of the Solar Neutrino Flux

奖项编号：AST-0607572 PI：Peter SturrockInstitution：Stanford University TITLE：太阳中微子流的可变性在过去的十年里，对太阳中微子数据的分析产生了越来越强的可变性证据。最近PISturRock及其合作者对镓实验/镓中微子天文台和超Kamiokande数据的统计重新检查提供了一个令人信服的证据，证明太阳中微子流量不是恒定的--相反，它随模式而变化，从而深入了解太阳深处中微子的根本性质和过程。这项工作的目标是通过对中微子观测的统计分析提供关键的观测信息，供理论界使用，其中包括目前正在开发一个模型的两名合作者，在该模型中，电子中微子通过跃迁磁矩与不育中微子耦合(从而将观测到的通量与随时间变化的磁现象联系在一起，例如旋转)。这项工作包括功率谱(用于非正态估计)和时频分析。第二个目标是检查通量测量和其他太阳变量之间的关系，包括由太阳和日球层天文台航天器上的迈克尔逊多普勒成像仪日震学实验所做的测量，因为这项实验探测太阳深处，据信那里发生了中微子流量调制。这项工作的结果及其影响将通过与当地团体和科学探险家俱乐部的外展努力与公众分享。“皮斯特罗克还将发展科学干扰的概念”(一种确定科学本质的方法)，以组织支持和反对太阳中微子可变性的论点/证据，并在适当的期刊文章中解释大学科学教师层面的原理。

AWARD NO: AST-0607572PI: Peter SturrockINSTITUTION: Stanford UniversityTITLE: Variability of the Solar Neutrino FluxOver the last decade, analysis of solar neutrino data has produced increasingly strongevidence for variability. A case is put forth that the recent statistical reexamination of theGallium Experiment/Gallium Neutrino Observatory and Super-Kamiokande data by PISturrock and collaborators now provides a convincing demonstration that the solarneutrino flux is not constant - rather, it varies with patterns that provide insight into theunderlying nature of neutrinos and processes in the deep solar interior. The goal of thiswork is to provide critical observational inputs through statistical analyses of neutrinoobservations for use by the theory community, including two collaborators currentlydeveloping a model in which electron neutrinos couple to a sterile neutrino through atransition magnetic moment (thereby tying the observed flux to time-dependent magneticphenomena, e.g., rotation). Included in this effort is a power-spectrum (for non-normalestimates) and time-frequency analyses. A second goal is to examine the relationshipbetween measurements of the flux and other solar variables including measurementsmade by the Michelson Doppler Imager helioseismology experiment on the Solar andHeliospheric Observatory spacecraft, since this experiment probes the deep solar interior,where neutrino flux modulation is believed to occur.The results of this work and its implications will be shared with the public throughoutreach efforts to local groups and to the Science Explorers Club." The PI Sturrock willalso develop the concepts of scientific interference" (an approach to determining thenature" of science) both to organize arguments/evidence for and against solar neutrinovariability and to explain the principle at the college science teacher level in anappropriate journal article.