Numerical and Theoretical Studies of the Structure of Active Galactic Nuclei, the Formation of Galaxies, Dark Matter, and Gamma Ray Bursts

活动星系核结构、星系形成、暗物质和伽马射线暴的数值和理论研究

• 批准号: 9422216
• 负责人: Reva Williams
• 金额: --
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-01-01 至 1995-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9422216&HistoricalAwards=false
• 关键词: Numerical; Theoretical; Studies; Structure; Active

9422216 Williams The research to be carried out will have an impact on (1) extragalactic astronomy: the structure and energy generation of quasars and other active galactic nuclei (AGN) are investigated, on (2) cosmology: the formation of galaxies in the early Universe are investigated, and on (3) a combination of galactic astronomy and cosmology: dark matter and gamma-ray bursts are investigated. The project involves theoretical, numerical, and statistical investigations. In Part I of this project, the physics of general relativistic, supermassive Kerr-Newman black holes are used to model AGN. Monte Carlo simulations of Penrose processes are used to model the extraction of energy from the ergosphere; and large scale electromagnetic fields are used to generate the jets. In Part II, electromagnetic and gravitational fields in a Friedmann cosmology are used to model the formation of supermassive stars, near the time of recombination in the early Universe. In Part III, low energy black holes of negligible emissions will be used to model dark matter in the Universe. Finally, in Part IV, black holes that undergo periods of being active and inactive are used to model gamma-ray bursters. The objective of the research is (1) to show that the Kerr-Newman black holes can explain the energy source of AGN; (2) to show how rotation, magnetic fields, and particle-field interactions can produce the necessary gravitational instabilities needed in the early Universe to allow the formation of supermassive stars of approximately 10 Million Solar masses (these stars could be the progenitors of the supermassive black holes believed to power AGN); and (3) to show that using black holes to model two poorly understood phenomena in the Universe: dark matter and gamma-ray bursts, can give promising results in explaining the nature of the original sources.

9422216威廉姆斯 将要进行的研究将对以下方面产生影响：（1）河外天文学：研究类星体和其他活动星系核的结构和能量产生;（2）宇宙学：研究早期宇宙中星系的形成;（3）星系天文学和宇宙学的结合：研究暗物质和伽马射线爆发。 该项目涉及理论，数值和统计调查。 在这个项目的第一部分，广义相对论，超大质量的Kerr-Newman黑洞的物理被用来模拟AGN。 彭罗斯过程的蒙特卡罗模拟被用来模拟能量从能层的提取，和大规模的电磁场被用来产生的射流。 在第二部分中，弗里德曼宇宙学中的电磁场和引力场被用来模拟超大质量恒星的形成，在早期宇宙的重组时间附近。 在第三部分中，可以忽略不计的低能量黑洞将被用来模拟宇宙中的暗物质。 最后，在第四部分中，黑洞经历了活跃和不活跃的时期被用来模拟伽马射线爆发。 研究的目的是：（1）证明Kerr-Newman黑洞可以解释活动星系核的能量来源;（2）为了说明旋转，磁场，粒子场的相互作用可以产生早期宇宙所必需的引力不稳定性，从而形成大约1000万太阳质量的超大质量恒星（这些恒星可能是被认为为活动星系核提供动力的超大质量黑洞的祖先）;（3）表明使用黑洞来模拟宇宙中两种人们知之甚少的现象：暗物质和伽马射线暴，可以给出有希望的结果解释原始来源的性质。