Variability of the Solar Neutrino Flux

太阳中微子通量的变化

• 批准号: 0607572
• 负责人: Peter Sturrock
• 金额: $ 13.86万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-10-01 至 2010-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0607572&HistoricalAwards=false
• 关键词: Variability; Solar; Neutrino; Flux

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.

奖项编号：AST-0607572 PI：Peter Sturrock机构：斯坦福大学标题：太阳中微子通量的可变性在过去的十年中，对太阳中微子数据的分析已经产生了越来越强的可变性证据。PISturrock和合作者最近对镓实验/镓中微子天文台和超级神冈数据的统计重新检验提供了一个令人信服的证据，证明太阳中微子通量不是恒定的-相反，它随模式而变化，从而深入了解太阳内部中微子和过程的基本性质。这项工作的目标是通过中微子观测的统计分析提供关键的观测输入，供理论界使用，包括两个合作者目前正在开发一个模型，其中电子中微子通过跃迁磁矩耦合到无菌中微子（从而将观测到的通量与时间相关的磁现象联系起来，例如，旋转）。包括在这方面的努力是一个功率谱（非正常估计）和时间频率分析。第二个目标是研究通量测量值与其他太阳变量之间的关系，包括太阳和日光层观测航天器上的迈克尔逊多普勒成像仪日震学实验的测量值，因为该实验探测太阳内部深处，在那里中微子通量调制被认为发生。这项工作的结果及其影响将通过与当地团体和科学探索者俱乐部“PI Sturrock还将发展科学干涉的概念”（一种确定科学性质的方法），以组织支持和反对太阳中微子变异性的论据/证据，并在大学科学教师水平上在适当的期刊文章中解释该原理。