Extragalactic fast X-ray transient candidates discovered by Chandra (2000–2014) J. Quirola-Vásquez, F. E. Bauer, P. G. Jonker, W. N. Brandt, G. Yang, A. J. Levan, Y. Q. Xue, D. Eappachen, X. C. Zheng and B. Luo A&A, 663 (2022) A168 Published online: 29 July 2022 DOI: 10.1051/0004-6361/202243047