A possible phase dependent absorption feature in the transient X-ray pulsar SAX J2103.5+4545

McKinley C. Brumback, Ryan C. Hickox, Felix S. Fürst +5

We present an X-ray spectral and timing analysis of two $NuSTAR$ observations of the transient Be X-ray binary SAX J2103.5+4545 during its April 2016 outburst, which was characteri…