An Ejection Event Captured by VLBI During the Outburst of Swift J1727.8$-$1613

Hongmin Cao, Jun Yang, Sándor Frey +9

We observed a newly-discovered Galactic black hole X-ray binary Swift J1727.8$-$1613 with the European Very Long Baseline Interferometry Network (EVN) at 5 GHz. The observation was…