RUI: Pulsar Studies of Relativistic Gravitation, the Interstellar Medium, and Radio Emission Processes

RUI：相对论引力、星际介质和无线电发射过程的脉冲星研究

• 批准号: 0406832
• 负责人: Joel Weisberg
• 金额: --
• 依托单位: Carleton College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-07-01 至 2008-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0406832&HistoricalAwards=false
• 关键词: RUI; Pulsar; Studies; Relativistic; Gravitation

This Principle Investigator is carrying out radio pulsar investigations of relativistic gravitation, the interstellar medium, and the pulsar emission process in Australia and in the U.S. The relativistic gravitation projects include timing and profile measurements of the double neutron star pulsar B1913+16 to achieve better precision on the orbital decay rate due to gravitational radiation emission, information on the geometry of the emission beam, and a much improved proper motion which has implications for studies of the evolution and galactic population of these objects. Further precise timing of millisecond pulsars is being done in order to search for timing irregularities ascribable to low-frequency gravitational waves emitted in the early Universe or from binary supermassive black holes. Interstellar medium investigations include galactic magnetic field studies of the overall magnetic field structure in the inner and outer Galaxy. Other pulsar studies will yield additional pulsar kinematical distances essential to calibrating galactic electron density models. These provide estimates of the distance to all pulsars contributing to a variety of general pulsar population issues. Work related to the pulsar radio emission process includes single-pulse and average-pulse polarimetry and analyses. The new data will be combined with earlier work in an effort to advance our knowledge of fundamental emission and magnetospheric propagation phenomena.Broader impacts. This work promotes the scientific education and training of the Carleton College students by enabling them to do real research rather than just reading about it in textbooks. The Carleton group collaborates with colleagues in Australia, Cornell, Berkeley, and Princeton, exposing them to the latest techniques, procedures, and ideas from some of the finest investigators in the field and at some of the finest observatories in the world. The project director's teaching and public outreach activities are inspired by this work. The project strengthens Carleton's record as one of the principal undergraduate sources of future physicists and astronomers, while also educating the broader public both within and outside Carleton.

该主要研究者正在对澳大利亚和美国进行相对论引力，星际培养基和脉冲星的发射过程进行无线电脉冲星研究，相对论引力项目包括时间和轮廓测量以及双中性恒星PULSAR B1913+16+在轨道衰减速度上获得更好的轨道衰减速率和射击速度的精确性，并在射击速度上获得了更好的轨道速度，并获得了射击速度的范围。这对这些物体的进化和银河种群的研究具有影响。为了搜索早期宇宙中发出的低频引力波或二进制超级质量黑洞的低频引力波，正在完成进一步的精确时机。 星际培养基的研究包括内部和外星系中总磁场结构的银河磁场研究。 其他PULSAR研究将产生其他PULSAR运动学距离，这对于校准银河电子密度模型必不可少。这些提供了与所有脉冲星的距离估计，这些脉冲星有助于各种普通的脉冲星人口问题。与PULSAR无线电发射过程有关的工作包括单脉冲和平均脉冲极化和分析。 新数据将与较早的工作相结合，以促进我们对基本排放和磁层传播现象的了解。这项工作通过使他们能够进行真正的研究，而不仅仅是在教科书中阅读它，从而促进了卡尔顿学院学生的科学教育和培训。 Carleton Group与澳大利亚，康奈尔，伯克利和普林斯顿的同事合作，将他们暴露于该领域一些最好的研究人员以及世界上一些最好的观察员的最新技术，程序和想法。 项目主管的教学和公共外展活动受到这项工作的启发。 该项目增强了卡尔顿的记录，作为未来物理学家和天文学家的主要本科生之一，同时还教育了卡尔顿内外更广阔的公众。