Extreme FeLoBAL outflow in the VLT/UVES spectrum of quasar SDSS J1321−0041 Doyee Byun, Nahum Arav, Mayank Sharma, Maryam Dehghanian and Gwen Walker A&A, 684 (2024) A158 Published online: 17 April 2024 DOI: 10.1051/0004-6361/202348215