RUI: Relativistic Gravitation, Pulsar Beams and Birth Processes, and the Interstellar Medium

RUI：相对论引力、脉冲星束和诞生过程以及星际介质

• 批准号: 1312843
• 负责人: Joel Weisberg
• 金额: $ 32.95万
• 依托单位: Carleton College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1312843&HistoricalAwards=false
• 关键词: RUI; Relativistic; Gravitation; Pulsar; Beams

Pulsars are highly compressed stars, more massive than the Sun, yet smaller than a few miles in diameter. A remarkable feature of pulsars is, because of their spin and strong magnetic field, they create regular pulses of radio waves. The investigator and his undergraduate students plan three areas of pulsar observations. The first is pulsar studies of relativistic gravitation. Pulsar pulses can be considered to be the "ticks" of a very precise clock. A pulsar's pulses are then the ticks of a very precise clock orbiting at high speed in the curved spacetime of a companion star. As such, binary pulsars are outstanding probes of relativistic gravitationThe second area is measurement of pulsar beaming and birth processes. While it is generally accepted that pulsar's beamed radio emissions originates from particles streaming relativistically above their magnetic poles, many details of these processes remain to be elaborated. They plan an investigation of the correlation between pulsar spin axis and proper motion directions, which will provide experimentally derived insights into the processes leading to pulsars. Their data is needed to understand the high pulsar velocities and spin rates. The third area is the study of our galaxy's magnetic field. The radio pulses travel through our galaxy and are affected by our galaxy's magnetic field. Their measurements of the pulsar magnetic field changes with distance and position in the sky will determine part of the magnetic structure of our galaxy. The students will receive invaluable scientific training that is simply not available in the classroom, including data gathering and analysis, testing of hypotheses, collaboration across the world, and oral and written presentation of results. These activities will help students to be future astronomers, physicists, and engineers. Second, the continuing involvement of the PI in these projects will enable him to bring the excitement of research to the classroom, where it will help to inspire scientists and nonscientists alike to study science.

脉冲星是高度压缩的恒星，比太阳更大，但直径比几英里小。 脉冲星的一个显着特征是，由于它们的旋转和强磁场，它们会产生常规的无线电波脉冲。 研究人员及其本科生计划了三个领域的脉冲星观察。 第一个是相对论重力的脉冲星研究。脉冲脉冲可以被认为是非常精确的时钟的“ tick”。然后，脉冲星的脉冲是一个非常精确的时钟的滴答，在伴侣恒星的弯曲时空中以高速绕。因此，二元脉冲星是相对论重力的杰出探针，第二个区域是脉冲星和出生过程的测量。虽然普遍认为，脉冲星的无线电排放源自磁极上方相对流的颗粒，但这些过程的许多细节仍有待详细说明。 他们计划研究脉冲星旋转轴与适当运动方向之间的相关性，这将为导致脉冲星的过程提供实验中的见解。需要他们的数据来了解高脉冲星速度和自旋速率。第三个区域是对我们银河系磁场的研究。 无线电脉冲通过我们的银河系传播，并受到银河系磁场的影响。 他们对脉冲星磁场的测量随着天空的距离和位置而变化，将决定我们银河系的磁性结构的一部分。学生将获得宝贵的科学培训，这些培训在课堂上根本无法获得，包括数据收集和分析，假设的测试，全球协作以及结果的口头和书面表现。这些活动将帮助学生成为未来的天文学家，物理学家和工程师。其次，PI在这些项目中的持续参与将使他能够将研究的兴奋带到课堂上，这将有助于激发科学家和非认识主义者学习科学。