Collaborative Research: Science with LWA1

合作研究：与 LWA1 的科学

• 批准号: 1139963
• 负责人: Steven Ellingson
• 金额: $ 45.13万
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-03-01 至 2017-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1139963&HistoricalAwards=false
• 关键词: Collaborative; Research; Science; LWA1

This is a collaborative award to the University of New Mexico and Virginia Tech to operate the first station of the Long Wavelength Array (LWA1). LWA1 was completed in April 2011 and is currently an operating radio observatory, performing observations resulting from its first call for proposals in addition to a continuing program of commissioning and characterization. The instrument consists of 256 dual-polarization dipoles, which are digitized and combined into beams. Four independently-steerable dual-polarization beams are available, each with two windows of 16 MHz bandwidth that can be independently tuned to any frequency between 10 MHz and 88 MHz.LWA1 provides unique new capabilities for Galactic science, pulsar science, solar and planetary science, space weather, cosmology, and searches for astrophysical transients. Results from the LWA1 will detect or severely constrain the presence of hot Jupiters within 50 parsecs of Earth. The LWA1 will provide high resolution in frequency and in time to examine phenomena such as solar bursts, giant pulses from the Crab Pulsar, and pulsars over a 4:1 frequency range that includes the poorly-understood turnover and steep-spectrum regimes. The Epoch of Reionization will be explored via an NSF-supported project called LEDA. In the area of broader impacts, LWA1 will develop engineering talent required for future instruments such as the Hydrogen Epoch of Reionization Array (HERA), will increase the participation of Hispanics in astronomy, and will provide opportunities for the direct involvement of K-12 students in observing with no impact on its primary science mission. LWA1 is a university-developed instrument in which students and post-docs have played, and should continue to play, an essential role as developers and users.

这是一个合作奖给新墨西哥州和弗吉尼亚理工大学的长波长阵列（LWA 1）的第一站操作。 LWA 1于2011年4月完成，目前是一个正在运行的无线电观测台，除了持续的调试和表征计划外，还进行第一次招标后的观测。该仪器由256个双极化偶极子组成，这些偶极子被数字化并组合成光束。四个独立可操纵的双偏振光束，每个都有两个16 MHz带宽的窗口，可以独立地调谐到10 MHz和88 MHz之间的任何频率。LWA 1为银河系科学，脉冲星科学，太阳和行星科学，空间天气，宇宙学和天体物理瞬变搜索提供了独特的新能力。来自LWA 1的结果将检测或严格限制地球50秒差距内热彗星的存在。LWA 1将在频率和时间上提供高分辨率，以检查太阳爆发，蟹状星云脉冲星的巨大脉冲和4：1频率范围内的恒星等现象，其中包括对周转率和陡谱制度的理解不足。 再电离时代将通过NSF支持的LEDA项目进行探索。 在更广泛的影响领域，LWA 1将培养未来仪器所需的工程人才，如氢时代再电离阵列（HERA），将增加西班牙裔天文学的参与，并将为K-12学生直接参与观测提供机会，而不会影响其主要科学使命。 LWA 1是一个大学开发的工具，学生和博士后已经发挥，并应继续发挥，作为开发人员和用户的重要作用。