CAREER: Multiwavelength Studies of Microquasars

职业：微类星体的多波长研究

• 批准号: 9983830
• 负责人: Stephen Eikenberry
• 金额: $ 49.98万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-05-01 至 2003-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9983830&HistoricalAwards=false
• 关键词: CAREER; Multiwavelength; Studies; Microquasars

AST-9983830EIKENBERRYMultiwavelength studies of the Galactic relativistic jet sources -- the "microquasars" will be carried out. The overall goal of the research is to understand the origin, formation, and evolution of relativistic jets in black hole X-ray binaries. The knowledge gained by these studies will be used to understand black-hole/relativistic-jet systems in our Galaxy and their larger analogs in active galactic nuclei. This research builds on previous work on X-ray and infrared (IR,) studies of the microquasar GRS +105 and other microquasar candidates. Highlights of the scientific work to be carried out include:Coordinated X-ray, IR, and radio observations of relativistic jet formation in the microquasar GRS 1915-105: The previous coordinated X-ray/IR/radio observations of this object provided the first direct, tine-resolved observations of relativistic jet formation in any system. These and other observations have also shown that GRS 1915+105 exhibits many different states of jet-producing and non-jet-producing behaviors. The observational campaigns will help to classify these states and understand the physical conditions necessary for the formation of relativistic jets.Coordinated x-ray, optical, IR, and radio observations of other Galactic rela-tivistic jet sources: These observations will include the astronomical sources GRO J1655-40, Cyg X-3, XTE J1748-288, SS 433, CI Cam, and LSI +61 303. The comparison of the observational data between these objects and with GRS 1915+105 will provide insights into the origin and nature of relativistic jets in Galactic X-ray binaries.Long-term IR monitoring of microquasars using Cornell's 0.6-m telescope and a new IR array camera: This type of monitoring, which has not been possible previously, will allow measurement of binary periods and recurrence timescales of IR flaring. Undergraduate students will carry out this work in the summer months and results of the research will be incorporated into the existing undergraduate astronomy laboratory classes during the academic year.Development and implementation of strategies for identifying new microquasar systems: This effort will include the study of candidate IR counterparts for the microquasars lE 1740-29 and GRS 1758-258, which were discovered using deep IR images from the Keck 10-m telescopes.The educational effort will include the training of undergraduate and graduate students. In addition, a laboratory curriculum will be developed and implemented for 5th-7th grade students, which emphasizes the fundamental importance of measurement to the scientific process. Key features include:Collaboration with the Ithaca City School District (ICSD) to develop basic hands- on experiments with links to current astronomical research. The goal is to help answer the question "How do we know what we know about the Universe?" The ICSD teachers will "field-test" the experiments and the results will be used to refine the experiments.Collaboration with the Cambridge Public Schools to develop a Spanish-language version of the laboratory and Web materials for use in bilingual classrooms. Field-testing of the Spanish version in Cambridge will also be used to refine the experiments. This component will provide an important means for outreach to historically underrepresented Spanish-speaking children.Development of Web-based resources which will allow students/teachers to explore the relationship between the results of their experiments and those of researchers working at the forefront of astrophysics. In the future, the resources will be made available nationwide to both English- and Spanish-speaking classrooms via the Internet.The Division of Astronomical Sciences provides support for this project.***

AST-9983830EIKENBERRY 将对银河系相对论性喷流源——“微类星体”进行多波长研究。该研究的总体目标是了解黑洞 X 射线双星中相对论性喷流的起源、形成和演化。 通过这些研究获得的知识将用于理解银河系中的黑洞/相对论喷流系统以及活动星系核中更大的类似物。 这项研究建立在之前对微类星体 GRS +105 和其他候选微类星体的 X 射线和红外 (IR) 研究工作的基础上。 即将开展的科学工作的重点包括：对微类星体 GRS 1915-105 中相对论性喷流形成的协调 X 射线、红外和射电观测：之前对该物体的协调 X 射线/红外/射电观测提供了第一个对任何系统中相对论性射流形成的直接、精细分辨观测。 这些和其他观测结果还表明，GRS 1915+105 表现出许多不同的喷流产生和非喷流行为状态。 观测活动将有助于对这些状态进行分类，并了解形成相对论性喷流所需的物理条件。对其他银河相对论性喷流源进行协调的 X 射线、光学、红外和射电观测：这些观测将包括天文源GRO J1655-40、Cyg X-3、XTE J1748-288、SS 433、CI Cam 和 LSI +61 303。这些天体之间以及 GRS 1915+105 的观测数据将有助于深入了解银河 X 射线双星中相对论性喷流的起源和性质。使用康奈尔大学的 0.6 米望远镜和新型红外阵列相机对微类星体进行长期红外监测：这种类型的监测以前是不可能的，它将允许测量红外耀斑的二进制周期和重现时间尺度。本科生将在夏季开展这项工作，研究结果将在学年期间纳入现有的本科生天文学实验室课程。制定和实施识别新微类星体系统的策略：这项工作将包括候选者的研究微类星体 lE 1740-29 和 GRS 1758-258 的红外对应物是使用 Keck 10 米望远镜的深红外图像发现的。教育工作将包括培训本科生和研究生。此外，还将为五至七年级的学生开发和实施实验室课程，强调测量对科学过程的根本重要性。 主要特点包括： 与伊萨卡市学区 (ICSD) 合作，开发与当前天文学研究相关的基本实践实验。目标是帮助回答“我们如何知道我们对宇宙的了解？”这个问题。 ICSD 教师将对实验进行“现场测试”，结果将用于完善实验。与剑桥公立学校合作开发西班牙语版本的实验室和用于双语课堂的网络材料。 剑桥西班牙语版本的现场测试也将用于完善实验。该组件将为向历史上代表性不足的西班牙语儿童提供重要的宣传手段。开发基于网络的资源，使学生/教师能够探索他们的实验结果与天体物理学前沿研究人员的实验结果之间的关系。 将来，这些资源将通过互联网向全国范围内的英语和西班牙语教室提供。天文科学部为该项目提供支持。***