SgrA* 和 M87 的亚毫角秒成像
天体物理学
2009-11-11 v1
摘要
我们展示并讨论了使用全球毫米波VLBI阵列(GMVA)对M87和SgrA*进行毫米波VLBI观测的新结果。展示了M87内喷流的新的3毫米VLBI图像,显示了空间分辨率低至15个史瓦西半径的细节。这个分辨率对应于为Sgr A*获得的空间分辨率(以R_s为单位)。我们讨论了在3、2和1.4毫米波长下由毫米波VLBI为该源提供的现有和新的尺寸测定。关于Sgr A*和M87之间的形态差异(后者表现出长喷流),对毫米波VLBI看到的亚毫角秒结构的比较可能有助于更好地理解超大质量黑洞附近的天体物理过程。
引用
@article{arxiv.astro-ph/0607072,
title = {Sub-milliarcsecond Imaging of SgrA* and M87},
author = {T. P. Krichbaum and D. A. Graham and M. Bremer and W. Alef and A. Witzel and J. A. Zensus and A. Eckart},
journal= {arXiv preprint arXiv:astro-ph/0607072},
year = {2009}
}
备注
Contribution to the proceedings of the Galactic Center Workshop 2006 "From the Center of the Milky Way to Nearby Low-Luminosity Galactic Nuclei", held in Bad Honnef, Germany on April 18 - 22, 2006. Editors: R. Schoedel (University of Cologne), et al.. To be published in the Journal of Physics: Conference Series by Institute of Physics Publishing. Paper contains 7 pages and 6 figures