双场干涉仪观测微型镜像：现场演示与前景
天体物理仪器与方法
2025-07-21 v2 太阳与恒星天体物理
摘要
引力微型镜事件的干涉仪观测为对镜子对象（尤其是孤立中子星和黑洞）进行精确、高效且直接的质量和距离测量提供了机会。然而，这类观测此前仅限于极亮事件的少数几例。最近，GRAVITY Wide 双场干涉仪的开发使得可以触及显著更淡的对象，使微型镜事件的干涉仪观测池量翻倍。本文报告了使用 GRAVITY Wide 首次成功观测微型镜事件的结果，并解决了事件 OGLE-2023-BLG-0061/KMT-2023-BLG-0496 中的微型镜像。我们以亚百分之一的精度测得镜子的角生尔半径， mas。结合该事件光谱检测到的微型镜视差，镜子的质量和距离分别为 和 kpc。我们介绍了针对干涉仪观测目标的选择程序，并讨论了影响 GRAVITY Wide 数据的可能系统效应。这一检测展示了新仪器的能力，也为微型镜事件的后续跟踪和未来例行发现孤立中子星和黑洞开辟了全新的可能性。
关键词
引用
@article{arxiv.2409.12227,
title = {Observations of Microlensed Images with Dual-field Interferometry: On-sky Demonstration and Prospects},
author = {P. Mroz and S. Dong and A. Merand and J. Shangguan and J. Woillez and A. Gould and A. Udalski and F. Eisenhauer and Y. -H. Ryu and Z. Wu and Z. Liu and H. Yang and G. Bourdarot and D. Defrere and A. Drescher and M. Fabricius and P. Garcia and R. Genzel and S. Gillessen and S. F. Honig and L. Kreidberg and J. -B. Le Bouquin and D. Lutz and F. Millour and T. Ott and T. Paumard and J. Sauter and T. T. Shimizu and C. Straubmeier and M. Subroweit and F. Widmann and M. K. Szymanski and I. Soszynski and P. Pietrukowicz and S. Kozlowski and R. Poleski and J. Skowron and K. Ulaczyk and M. Gromadzki and K. Rybicki and P. Iwanek and M. Wrona and M. J Mroz and M. D. Albrow and S. -J. Chung and C. Han and K. -H. Hwang and Y. K. Jung and I. -G. Shin and Y. Shvartzvald and J. C. Yee and W. Zang and S. -M. Cha and D. -J. Kim and S. -L. Kim and C. -U. Lee and D. -J. Lee and Y. Lee and B. -G. Park and R. W. Pogge},
journal= {arXiv preprint arXiv:2409.12227},
year = {2025}
}
备注
accepted for publication in ApJ