GRAVITY: 接近人马座A*事件视界
天体物理学
2009-11-13 v1
摘要
我们介绍了第二代VLTI仪器GRAVITY，目前正处于初步设计阶段。GRAVITY专门设计用于观测银河系中心大质量黑洞人马座A*事件视界附近物质的高度相对论性运动。我们确定了实现这一目标所需的关键设计特征，并提出了相应的仪器概念。该概念包括：集成光学、四望远镜、双光束馈送组合器（在低温容器中运行）；近红外波前传感自适应光学；对VLTI视场内次级源的条纹跟踪；以及一种新颖的计量学概念。模拟表明，计划的设计符合科学需求；特别是，对于像人马座A*这样K=15星等的源，在存在合适的相位参考源的情况下，10微角秒的天体测量是可行的。
引用
@article{arxiv.0808.0063,
title = {GRAVITY: getting to the event horizon of Sgr A*},
author = {F. Eisenhauer and G. Perrin and W. Brandner and C. Straubmeier and A. Richichi and S. Gillessen and J. P. Berger and S. Hippler and A. Eckart and M. Schoeller and S. Rabien and F. Cassaing and R. Lenzen and M. Thiel and Y. Clenet and J. R. Ramos and S. Kellner and P. Fedou and H. Baumeister and R. Hofmann and E. Gendron and A. Boehm and H. Bartko and X. Haubois and R. Klein and K. Dodds-Eden and K. Houairi and F. Hormuth and A. Graeter and L. Jocou and V. Naranjo and R. Genzel and P. Kervella and T. Henning and N. Hamaus and S. Lacour and U. Neumann and M. Haug and F. Malbet and W. Laun and J. Kolmeder and T. Paumard and R. -R. Rohloff and O. Pfuhl and K. Perraut and J. Ziegleder and D. Rouan and G. Rousset},
journal= {arXiv preprint arXiv:0808.0063},
year = {2009}
}
备注
13 pages, 11 figures, to appear in the conference proceedings of SPIE Astronomical Instrumentation, 23-28 June 2008, Marseille, France