The Emission Geometry, Radiation Processes, and Evolution of Radio Pulsars

射电脉冲星的发射几何、辐射过程和演化

• 批准号: 8917722
• 负责人: Joanna Rankin
• 金额: $ 18.3万
• 依托单位: University of Vermont & State Agricultural College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-02-01 至 1994-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8917722&HistoricalAwards=false
• 关键词: Emission; Geometry; Radiation; Processes; Evolution

Pulsars are rotating neutron stars with strong magnetic fields that emit regular pulsed signals in the radio and, in some cases, the optical and other frequencies. These emissions are believed to be the result of complex processes involving the acceleration of charged particles in the stars' surface magnetic fields. The Principal Investigator (PI) proposes to investigate obser- vationally and theoretically pulsar emission, with particular attention paid to these topics: 1. determining the geometry of the magnetic fields in the emitting regions; 2. investigating the processes that occur in the polar cap regions just above the pulsars' surfaces and how they produce the pulsed radiation; and 3. looking at the pulsar population as a whole (including X-ray and radio binary pulsars, millisecond pulsars, as well as ordinary single radio pulsars) and exploring neutron star formation and evolution. Observations will be carried out at Arecibo, the Pushchino Observatory (Soviet Union), Bonn (West Germany), Green Bank, and the VLA.

脉冲星是一种旋转的中子星，具有强磁场，在无线电中发射规则的脉冲信号，在某些情况下，还会发射光学和其他频率。这些辐射被认为是复杂过程的结果，包括带电粒子在恒星表面磁场中的加速。首席研究人员(PI)建议从观测和理论上研究脉冲星发射，特别注意以下主题：1.确定发射区的磁场几何；2.研究发生在脉冲星表面正上方的极帽区域的过程及其如何产生脉冲辐射；3.将脉冲星群体作为一个整体(包括X射线和射电双星、毫秒脉冲星以及普通的单射电脉冲星)来考察，探索中子星的形成和演化。观测将在阿雷西博、普什奇诺天文台(苏联)、波恩(西德)、绿岸和VLA进行。