![Hannah McCall](https://sites.wustl.edu/errando/files/2020/02/hannah2-280x386.jpg)
Hannah McCall
Undergraduate student
Hannah analyzes X-ray data from the Chandra, XMM-Newton, and NICER observatories to study gamma-ray binaries. She is currently writing her senior thesis studying the spectral properties of GX 301-2, an accretion-powered X-ray pulsar.