Probes of Very Compact Features in Quasars and Interstellar Clouds

这项拨款支持类星体中小而紧凑特征的研究 和其他活动星系核通过一系列的多- 从无线电到伽马射线的频率观测 排放 这项研究将增加我们对 控制类星体的机制， 宇宙中的能量源。 该赠款还支持监测 来寻找 它们在某些波长下的亮度， 我们银河系的星际介质在我们之间移动， 无线电发射的背景源。 这项研究将增加我们的 了解气体的含量、结构和分布 在银河系中。 这项工作由波士顿的艾伦·马舍尔和托马斯·巴尼亚博士领导 大学建立教育和研究基础设施， 通过培训新科学家的技术技能， 需要有效地使用新的VLBA（甚长基线阵列）， 目前已接近完工。

This grant supports a study of small, compact features in quasars and other active galactic nuclei through a series of multi- frequency observations extending from the radio to gamma-ray emissions. This research will increase our understanding of the mechanisms that govern quasars, the most distant and energetic power sources in the universe. The grant also supports monitoring of nearby clouds of molecular gas to search for variability in their brightness at certain wavelengths that is expected as the interstellar medium of our own Galaxy moves between us and background sources of radio emission. This study will increase our understanding of the content, structure and distribution of the gas in the Milky Way. This work, led by Drs. Alan Marscher and Thomas Bania of Boston University builds the educational and research infrastructure of astronomy by training new scientists in the technical skills needed to effectively use the new VLBA (Very Long Baseline Array), which is now near completion.