The Modulation of the Galactic Cosmic Radiation Over the Past 10,000 Years and the Implications of the Long Solar Minimum of 2006-9

过去一万年银河系宇宙辐射的调制以及2006-9年太阳长期极小期的影响

• 批准号: 1050002
• 负责人: Donald Reames
• 金额: $ 35.72万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-04-15 至 2015-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1050002&HistoricalAwards=false
• 关键词: Modulation; Galactic; Cosmic; Radiation; Over

The Principal Investigator (PI) will use measurements of the cosmogenic isotopes of beryllium and carbon over the last 10,000 years, together with cosmic ray and other data gained from satellites since 1963, to examine the implications of the long minimum of solar activity that occurred between 2006 and 2009. Cosmogenic isotope data are among the few quantitative measurements available for studying solar processes in the deep past. With the assistance of his collaborators, the PI will characterize the long-term and short-term features of space weather and investigate the long-term variability of the total solar irradiance (TSI) of the Sun over the last 10,000 year interval.This work will increase our understanding of cosmic ray physics, solar physics, space weather, and terrestrial climate change. A major outcome will be a strengthened collaboration among the cosmic ray, solar physics, and cosmogenic isotope research communities. The ~10,000 year cosmogenic record to be used here will provide substantial insight into solar magnetic processes, and by inference, the magnetic processes that occur on other stars. This research will also contribute to a better understanding of the geological and biological changes that occurred in the Holocene post-glacial era.

首席研究员（PI）将使用过去10，000年来铍和碳的宇宙成因同位素的测量结果，以及自1963年以来从卫星获得的宇宙射线和其他数据，以研究2006年至2009年期间发生的太阳活动长期最低点的影响。宇宙成因同位素数据是可用于研究过去太阳活动过程的为数不多的定量测量数据之一。在他的合作者的协助下，PI将描述空间天气的长期和短期特征，并调查过去10，000年期间太阳总辐照度（TSI）的长期变化。这项工作将增加我们对宇宙射线物理学，太阳物理学，空间天气和陆地气候变化的理解。 一个主要成果将是加强宇宙射线、太阳物理学和宇宙成因同位素研究界之间的合作。这里使用的~ 10，000年宇宙起源记录将提供对太阳磁场过程的实质性了解，并通过推理，其他恒星上发生的磁场过程。这项研究还将有助于更好地了解全新世后冰川时代发生的地质和生物变化。