Barillier, Erin; Grinberg, Victoria; Horn, David; Nowak, Michael A.; Remillard, Ronald A.; Steiner, James F.; Walton, Dominic J.; Wilms, Jörn
(2023)
4U 1957+11 is a black hole candidate system that has been in a soft X-ray spectral state since its discovery. We present analyses of recent joint NICER and NuSTAR spectra, which are extremely well described by a highly ...
