RUI: A Study of the Sources of Solar Total and Spectral Variability

RUI：太阳总量和光谱变率来源的研究

• 批准号: 0533511
• 负责人: Gary Chapman
• 金额: --
• 依托单位: The University Corporation, Northridge
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-11-01 至 2009-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0533511&HistoricalAwards=false
• 关键词: RUI; Study; Sources; Solar; Total

The San Fernando Observatory (SFO) of California State University Northridge (CSUN) has the longest existing data set of photometric full disk solar images, now covering more than 17 years. These images allow precise measurement of the relative brightness of solar features such as sunspots and faculae. In the proposed research, the PI will use SFO's archived and future photometric images to address the following open questions about solar variability: Are observed solar magnetic features sufficient to explain both the short and long term variations in total and spectral solar irradiance? What are the relative contributions of various solar features to changes in these irradiances? What are the statistical properties of solar active regions, and do they change either during the solar cycle or from one cycle to the next? Does the solar irradiance at solar minimum change in a systematic way? Can measurements of solar features be used to reconstruct current and historic values of total and spectral solar irradiance? SFO photometric images, precision information on solar active regions, and secondary data such as total and spectral solar irradiance models will be made available to the scientific community. This SFO research program will also have broader impacts extending beyond solar physics. This research will bolster the CSUN educational mission by teaching students the value of research and by training them in the use of computers and analytical techniques. The proposed research will also broaden the participation of underrepresented groups in science. Public talks on the results of this research will be presented in the CSUN planetarium, informing and educating a wider audience.

加州州立大学北岭分校(CSUN)的圣费尔南多天文台(SFO)拥有现存最长的光度学全盘太阳图像数据集，现在覆盖了17年以上。这些图像可以精确测量太阳黑子和光斑等太阳特征的相对亮度。在拟议的研究中，PI将使用SFO存档的和未来的光度学图像来解决以下关于太阳可变性的悬而未决的问题：观测到的太阳磁场特征是否足以解释太阳总辐射和光谱辐射的短期和长期变化？不同太阳特征对这些辐照度变化的相对贡献是什么？太阳活动区的统计特性是什么？它们是否在太阳活动周期内或从一个太阳周期到下一个太阳周期发生变化？太阳最小时的太阳辐照度是否有系统的变化？太阳特征的测量可以用来重建太阳总辐射和光谱辐射的当前和历史数值吗？将向科学界提供SFO测光图像、太阳活动区的精确信息以及太阳总辐照度和光谱模型等二级数据。SFO的这项研究计划还将产生超越太阳物理学的更广泛的影响。这项研究将通过向学生传授研究的价值并通过培训他们使用计算机和分析技术来支持CSUN的教育使命。这项拟议的研究还将扩大未被充分代表的群体对科学的参与。关于这项研究结果的公开讲座将在CSUN天文馆举行，向更广泛的受众提供信息和教育。