VLBI imaging of the pre-coalescence SMBHB candidate SDSS J143016.05+230344.4 Tao An, Yingkang Zhang, Ailing Wang, Xinwen Shu, Huan Yang, Ning Jiang, Liming Dou, Zhen Pan, Tinggui Wang and Zhenya Zheng A&A, 663 (2022) A139 Published online: 21 July 2022 DOI: 10.1051/0004-6361/202243821