RUI: Studies of Gravitation, the Interstellar Medium, and Pulsars

RUI：引力、星际介质和脉冲星的研究

• 批准号: 9222435
• 负责人: Joel Weisberg
• 金额: $ 9.71万
• 依托单位: Carleton College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-03-01 至 1996-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9222435&HistoricalAwards=false
• 关键词: RUI; Studies; Gravitation; Interstellar; Medium

RUI: Studies of Gravitation, the Interstellar Medium, and Pulsars. Dr. Weisberg will continue investigations in three areas. (1) Studies of relativistic gravitation with the first binary pulsar: Continued observations of this pulsar will be used for investigation of gravitational radiation emission, geodetic spin precession, the constancy of G, and constraints on alternatives to general relativity. (2) Measurements and analyses of pulsar distances and the interstellar medium; 21-cm--pulsar absorption spectra will be measured. These data will be used to study pulsar distances and the neutral hydrogen and free electron distribution and density in the Galaxy. (3) A pulsar polarimetry and timing survey: Polarization and timing measurements will be made on 120 pulsars at three-month intervals at the Arecibo Observatory. The output of these observations will be used for studies of pulsar emission mechanisms, pulse morphology, glitches, timing noise, and precession; and, via Faraday rotation measurements, investigations of the galactic magnetic field. This award is made under the Research in Undergraduate Institutions (RUI) activity at the NSF.

RUI：引力、星际介质和脉冲星的研究。 韦斯伯格博士将继续在三个领域进行调查。 （1）利用第一颗双脉冲星进行相对论引力研究：对该脉冲星的持续观测将用于研究引力辐射发射、大地自旋进动、G恒常性以及对广义相对论替代方案的约束。 （2）脉冲星距离和星际介质的测量与分析； 测量21厘米脉冲星吸收光谱。 这些数据将用于研究脉冲星距离以及银河系中的中性氢和自由电子分布和密度。 (3) 脉冲星偏振和授时测量：将在阿雷西博天文台每隔三个月对 120 颗脉冲星进行偏振和授时测量。 这些观测结果将用于脉冲星发射机制、脉冲形态、毛刺、定时噪声和进动的研究；并通过法拉第旋转测量来研究银河磁场。 该奖项是根据 NSF 本科机构研究 (RUI) 活动颁发的。