Xavier Siemens

Xavier Siemens is Associate Professor of Physics at the University of Wisconsin-Milwaukee, with adjunct appointments in Astronomy, Gravitation, and Cosmology. His research spans gravitational wave astrophysics, cosmic strings, and early universe cosmology. He leads LIGO Scientific Collaboration's Calibration Team and directs the Arecibo Remote Command Center (ARCC@UWM), mentoring undergraduates in radio astronomy and gravitational wave research.

Selected publications focus on gravitational wave detection methodologies, cosmic string signatures, and pulsar timing optimization. His recent work includes calibrating LIGO data and developing noise-reduction algorithms for interferometric detectors.

• Education: PhD (Tufts University, 2002), MSc (Imperial College, 1995)
• Roles: LSC Burst Search Group, Neutron Star Search Group, Publications Committee