Ultraviolet spectroscopy of the black hole X-ray binary MAXI J1820+070 across a state transition

Maria Georganti, Christian Knigge, Noel Castro Segura +8

We present ultraviolet (UV) spectroscopic observations covering three distinct accretion states of the low-mass X-ray binary (LMXB) MAXI J1820+070: the luminous hard state, a hard-…