Collaborative Research: Science with LWA1

这是新墨西哥大学和弗吉尼亚理工大学的一个合作奖项，用于操作长波阵（LWA1）的第一个站。LWA1于2011年4月完工，目前是一个正在运行的射电天文台，除了持续的调试和表征计划外，还进行了首次招标后的观测。该仪器由256个双极化偶极子组成，这些双极化偶极子被数字化并组合成光束。四个可独立控制的双偏振波束是可用的，每个波束有两个16 MHz带宽的窗口，可以独立地调谐到10 MHz到88 MHz之间的任何频率。LWA1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功能。LWA1的结果将探测或严格限制热木星在距离地球50秒差距内的存在。LWA1将在频率和时间上提供高分辨率，以检测诸如太阳爆发、蟹状脉冲星的巨大脉冲和4:1频率范围内的脉冲星等现象，其中包括尚不清楚的周转率和陡谱制度。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，LWA1将培养未来仪器所需的工程人才，如氢再电离阵列（HERA），将增加西班牙裔人对天文学的参与，并将为K-12学生提供直接参与观测的机会，而不会影响其主要科学任务。LWA1是一个由大学开发的工具，学生和博士后作为开发人员和用户已经发挥并应该继续发挥重要作用。

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.