Measurement and Analysis of Kodaikanal Solar Images, Award in U.S. and Indian Currencies

科代卡纳尔太阳图像的测量和分析，美国和印度货币奖

• 批准号: 9003847
• 负责人: Robert Howard
• 金额: $ 4.69万
• 依托单位: Association of Universities for Research in Astronomy, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-04-01 至 1995-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9003847&HistoricalAwards=false
• 关键词: Measurement; Analysis; Kodaikanal; Solar; Images

Description: Under this project, scientists from the U.S. and from India will work to enlarge the data base on the motion of sunspots. The source of the new data is the Indian white-light solar plates began in 1905 in the Kodaikanal Observatory, which is of excellent quality. The combination of the Kodaikanal and Mount Wilson data could make the finest sunspot data set in existence. It will provide many times the number of sunspots now available for statistical studies of rotation and latitude drift and spot areas. This will increase the precision of the averaged results for the cycle-related rotation rate changes found in the data set. It will also increase the confidence in small-amplitude effects which is low given the the limits of the U.S. data set, as well as increase the potential for detecting low-amplitude effects. These measured drifts have an important bearing on the large-scale dynamics of the solar convection zone and is believed to be responsible for the 11-year activity cycle. Scope: The U.S. P.I. Dr. Robert Howard, of the National Solar Observatory (NSO) in Tucson, AZ, and the Indian P.I. Dr. K.R. Sivaraman, of the Indian Institute of Astrophysics, (IIA) in Bangalore, India have collaborated in earlier studies under the Mount Wilson Program funded by NSF/AST. This action extends and formalizes the international collaboration by providing funds to the NSO for the per diem of the Indian scientists, and providing IIA with funds in Indian currency for travel to the U.S. and for computer operation for digitization of data. Funding: This project is being funded under two grants: 1. To The Association of Universities for Research in Astronomy $10,500 plus $36,555 in Indian Currency 2. To The Indian Institute of Astrophysics $49,600 in Indian Currency.

描述：在这个项目下，来自美国和印度的科学家将努力扩大关于太阳黑子运动的数据库。新数据的来源是1905年在柯达卡纳尔天文台开始的印度白光太阳板，质量非常好。结合Kodaikanal和Mount Wilson的数据，可以得到目前最好的太阳黑子数据集。它将提供数倍于目前可用的太阳黑子数量，用于自转、纬度漂移和黑子区域的统计研究。这将提高在数据集中发现的周期相关的旋转速率变化的平均结果的精度。它还将增加对小幅度效应的信心（考虑到美国数据集的限制，小幅度效应很低），并增加检测低幅度效应的潜力。这些测量到的漂移对太阳对流区的大尺度动力学有重要影响，并被认为是造成11年活动周期的原因。范围：位于亚利桑那州图森的美国国家太阳天文台（NSO）的私家侦探罗伯特·霍华德博士和位于印度班加罗尔的印度天体物理研究所（IIA）的印度私家侦探K.R.西瓦拉曼博士在由NSF/AST资助的威尔逊山项目的早期研究中进行了合作。这一行动扩大并正式化了国际合作，为印度科学家的日常生活提供资金，并为IIA提供以印度货币支付的资金，用于前往美国的旅行和数据数字化的计算机操作。资助：本项目由两项拨款资助：给天文研究大学协会10,500美元加上36,555美元的印度货币给印度天体物理研究所49600美元的印度货币。