Astrophysical Studies of Gravitational Lenses, Faint Galaxies, Quasars and Cosmical Magnetic Fields

引力透镜、微弱星系、类星体和宇宙磁场的天体物理研究

• 批准号: 9900866
• 负责人: Kip Thorne
• 金额: $ 24.02万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-06-15 至 2004-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9900866&HistoricalAwards=false
• 关键词: Astrophysical; Studies; Gravitational; Lenses; Faint

Astrophysical studies of gravitational lenses, faint galaxies, quasars and cosmical magnetic fieldsRoger BlandfordDr. Blandford is conducting four related projects: 1. He is modeling individual cases of gravitational lenses. There are now over thirty examples of strong gravitational lenses in which multiple lenses of a background source are formed primarily by the lensing effect of an intervening galaxy. He is testing the hypothesis that the highest incidence of observed lensing arises when an elliptical galaxy resides in a small group.2. He is analyzing pencil beam surveys of high completeness to determine how the properties of observed galaxies are related to their environments. 3. He is developing a new model for the interpretation of broad absorption line quasars that associates these objects and, by extension, a large fraction of normal, radio-quiet quasars with black holes that are being supplied with gas at a super-critical rate.4. He is examining the possibility that both the slow and the fast magnetohydrodynamic shock waves associated with reconnection sites have an important role in relativistic particle acceleration in environments as diverse as radio jets, the solar corona and accretion disks.

引力透镜、暗星系、类星体和宇宙磁场的天体物理研究。Blandford正在进行四个相关项目：1。 他正在模拟引力透镜的个别情况。 现在有超过30个强引力透镜的例子，其中背景源的多个透镜主要由介入星系的透镜效应形成。 他正在验证一个假设，即当椭圆星系位于一个小群体中时，观测到的透镜效应的发生率最高。 他正在分析高完整性的笔形光束调查，以确定观察到的星系的属性如何与它们的环境相关。 3. 他正在开发一种新的模型来解释宽吸收线类星体，该模型将这些天体以及大部分正常的、无线电安静的类星体与以超临界速率供应气体的黑洞联系起来。 他正在研究的可能性，无论是慢和快磁流体动力学冲击波与重联网站有一个重要的作用，在相对论粒子加速在不同的环境，如无线电喷流，太阳日冕和吸积盘。