利用S2的运动约束SgrA*周围的矢量云
星系天体物理
2024-02-09 v2 天体物理仪器与方法
广义相对论与量子宇宙学
摘要
银河系中心的暗致密天体已被确认为一个质量约为 的超大质量黑洞，但其环境的性质仍存在争议。在这项工作中，我们利用对S2星（最接近该大质量黑洞的恒星之一）运动的天体测量和光谱观测，确定了人马座A*周围由大质量矢量场组成的延展质量的上限。对于有效质量在 范围内的矢量，我们的马尔可夫链蒙特卡洛分析未发现此类云存在的证据，并在 置信水平上给出了上限 。我们表明，介质对S2运动施加的动力学摩擦在本研究及先前工作的分析中不起作用，因此可以忽略。
引用
@article{arxiv.2312.02653,
title = {Using the motion of S2 to constrain vector clouds around SgrA*},
author = {GRAVITY Collaboration and A. Foschi and R. Abuter and K. Abd El Dayem and N. Aimar and P. Amaro Seoane and A. Amorim and J. P. Berger and H. Bonnet and G. Bourdarot and W. Brandner and R. Davies and P. T. de Zeeuw and D. Defrère and J. Dexter and A. Drescher and A. Eckart and F. Eisenhauer and N. M. Förster Schreiber and P. J. V. Garcia and R. Genzel and S. Gillessen and T. Gomes and X. Haubois and G. Heißel and Th. Henning and L. Jochum and L. Jocou and A. Kaufer and L. Kreidberg and S. Lacour and V. Lapeyrère and J. -B. Le Bouquin and P. Léna and D. Lutz and F. Mang and F. Millour and T. Ott and T. Paumard and K. Perraut and G. Perrin and O. Pfuhl and S. Rabien and D. C. Ribeiro and M. Sadun Bordoni and S. Scheithauer and J. Shangguan and T. Shimizu and J. Stadler and C. Straubmeier and E. Sturm and M. Subroweit and L. J. Tacconi and F. Vincent and S. von Fellenberg and J. Woillez},
journal= {arXiv preprint arXiv:2312.02653},
year = {2024}
}
备注
9 pages, 5 figures, accepted to MNRAS