High resolution multi-wavelength studies of jets in 4 Stokes parameters

4 斯托克斯参数射流的高分辨率多波长研究

• 批准号: 0607453
• 负责人: John F. Wardle
• 金额: $ 34.13万
• 依托单位: Brandeis University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0607453&HistoricalAwards=false
• 关键词: resolution; multi; wavelength; studies; jets

AST-0607453WardleThis project will use the highest resolution radio wavelength observations of the powerful jets seen to shoot out at close to the speed of light from the hearts of active galaxies, to answer fundamental questions about the jets and their central engines. All magneto-hydrodynamic models require the jets to carry enormous electric currents, which are detected via the linear and circular polarization of the radio emission. This work will measure the current in many jets, attempt to measure the true magnetic flux density in the jets, and study their interaction with their surroundings in new ways. This is one of the few projects attempting this very difficult polarization work, and it will push the ability of the Very Long Baseline Array to make circular and linear polarization observations to millimeter wavelengths. A small (undergraduate) study of the nearby microquasar SS433 may shed some light on the much larger jets in distant galaxies.Data, model fits, and movie visualizations from the previous monitoring campaign are publicly available and a useful teaching tool: these activities will be continued with the current work. Students are always involved in the research of this team, working one-on-one with faculty on projects designed to be particularly appropriate for undergraduate research. In addition, many non-science majors experience research and education through activities with this research team, and graduate with a deeper appreciation of the nature of science and of the scientific enterprise.

AST-0607453WardEthis项目将使用最高的分辨率无线电波长观测值，即在活跃星系的心脏中以光速射出的强大喷气机，以回答有关喷气机及其中央发动机的基本问题。 所有磁静脉动力学模型都要求喷气机携带巨大的电流，这是通过无线电发射的线性和圆形极化检测到的。 这项工作将在许多喷气机中测量电流，试图测量喷气机中的真正磁通量密度，并以新的方式研究它们与周围环境的相互作用。 这是尝试这项非常困难的极化工作的少数项目之一，它将推动非常长的基线阵列将圆形和线性极化观测的能力推向毫米波长。 对附近的微QuaSar SS433进行的一项小型（本科）研究可能会揭示遥远星系中更大的喷射。DATA，模型拟合和以前的监测活动中的电影可视化是公开的，有用的教学工具是有用的：这些活动将继续进行当前的工作。 学生们总是参与该团队的研究，与教职员工一对一的工作，旨在特别适合本科研究。 此外，许多非科学专业的专业人士通过该研究团队的活动进行了研究和教育，并对科学和科学企业的性质进行了更深入的了解。