欧几里得银河星团观测中历史微透镜事件
摘要
微透镜观测历史悠久，已覆盖银河星团区域，获取了数千个探测结果，其中包括许多系外行星系统。欧几里得银河星团观测计划为重新审视大量过去的事件并尝试解决已知事件的镜源分辨率提供了独特机会。由于对单个事件的分析需要相当大的工作量，因此在所有可能的目标中确立优先级非常重要，识别那些有更高概率成功解决镜源分离且科学兴趣最高的候选者。drawing from the databases of the three main microlensing surveys (OGLE, MOA and KMTNet), we compile the complete catalog of past microlensing events in the Euclid survey footprint up to year 2023, containing 8081 entries. By re-modeling all events and cross-checking with Galactic models, we estimate the relative lens-source proper motions for all events. Taking into account all uncertainties, for each microlensing event we are able to estimate the probability that the lens is separated from the source by more than a given angular distance threshold. Hence, we rank all events by their resolution probability, providing additional useful information that will guide future analyses on the most promising candidates. A particular attention is dedicated to known planetary microlensing events.
引用
@article{arxiv.2511.03307,
title = {Historic microlensing events in the euclid Galactic Bulge Survey},
author = {V. Bozza and L. Salmeri and P. Rota and E. Bachelet and J. -P. Beaulieu and A. A. Cole and J. C. Cuillandre and E. Kerins and I. Mcdonald and P. Mróz and M. Penny and C. Ranc and N. Rektsini and E. Thygesen and H. Verma and A. Udalski and R. Poleski and J. Skowron and M. K. Szymański and I. Soszyński and P. Pietrukowicz and S. Kozłowski and K. Ulaczyk and K. A. Rybicki and P. Iwanek and M. Wrona and M. Gromadzki and M. J. Mróz and F. Abe and D. P. Bennett and A. Bhattacharya and I. A. Bond and R. Hamada and Y. Hirao and A. Idei and S. Ishitani Silva and S. Miyazaki and Y. Muraki and T. Nagai and K. Nunota and G. Olmschenk and N. J. Rattenbury and Y. K. Satoh and T. Sumi and D. Suzuki and T. Tamaoki and S. K. Terry and P. J. Tristram and A. Vandorou and H. Yama},
journal= {arXiv preprint arXiv:2511.03307},
year = {2025}
}
备注
12 pages, 12 figures