Radiative signatures of dust and lines: From protostellar disks to active galactic nuclei

AST-0807417 Elitzur该项目继续进行一项长期计划，以开发实用的辐射传输方法，并对其进行改进，以适应新观测的进展。 该计划已经对天文脉泽和活动星系核（AGN）尘埃红外辐射的研究产生了变革性的影响。 目前的工作将扩大和加强两个最近开发的技术，一个是一个新的精确的方法，从多层次系统的线发射和其他处理的辐射从clusified媒体。 这些改进将用于改进尘埃发射模型与即将到来的高分辨率观测的匹配，用于修正活动星系核线发射的计算，以消除错误的假设，用于尘埃辐射压力的现实计算，并研究吸积盘的热和脉泽线发射。 这个理论程序和观测团队之间的密切合作是研究的一个主要组成部分，因为理论是牢固地锚定在observationsDeveloped建模代码将继续被放置在公共领域，和过去的代码已被用于许多不相关的研究。 主要研究者保持广泛的国际合作，以前的学生都继续积极参与该计划：这个小组的一个主要成就是其持续的教育影响。

AST-0807417ElitzurThis project continues a long-term program to develop practical radiative transfer methods, and refine them to match the progress of new observations. This program has already had a transformative impact on studies of astronomical masers and dust infrared emission from active galactic nuclei (AGN). The present work will expand and enhance two recently developed techniques, one a new exact method for line emission from multi-level systems and the other for handling radiation from clumpy media. These enhancements will be used for improved matching of dust emission models to forthcoming high-resolution observations, for corrected calculations of line emission from AGN that remove faulty assumptions, for realistic calculations of radiation pressure on dust, and to study the thermal and maser line emission from accretion disks. Close collaboration between this theory program and the observing teams is a major ingredient of the research, because the theory is strongly anchored in observationsDeveloped modeling codes will continue to be placed in the public domain, and past codes have been used in many unrelated studies. The principal investigator maintains a broad range of international collaborations, and former students all continue active involvement with the program: a major accomplishment of this group has been its continuing educational impact.