Education

1992 Columbia University, Ph.D., Physics

1990 Columbia University, M.Phil., Physics

1989 Columbia University, M.A., Physics

1987 Imperial College, University of London, B.Sc. (Hons.), Physics
Royal College of Science, A.R.C.S. (Hons.), Physics 

Professional History

• 2011–present: Professor of Astronomy and Astrophysics, The Pennsylvania State University

• 2004–2011: Associate Professor of Astronomy and Astrophysics, The Pennsylvania State University

• 1998–2004: Assistant Professor of Astronomy and Astrophysics, The Pennsylvania State University

• 1995–1998: Hubble Fellow, Department of Astronomy University of California, Berkeley

• 1992–1995: Postdoctoral Researcher, Space Telescope Science Institute

Academic Appointments and Affiliations

• 2014–2018: Associate Department Head in charge of graduate program, Department of of Astronomy & Astrophysics, The Pennsylvania State University

• 2011–present: Member, Institute for Gravitation and the Cosmos, Center for
  Multimessenger Astrophysics, Center for Theoretical and Observational Cosmology, The Pennsylvania State University

• 2005–2011: Member, Center for Gravitational Wave Physics, The Pennsylvania State University 

Awards and Distinctions

• 2019: Faculty Mentor of the Year for the Sloan Minority PhD Program (sponsored by the Institute on Teaching and Mentoring, Southern Regional Education Board)

• 2013: C. I. Noll Award for Excellence in Teaching (Penn State, sponsored by the Alumni Board and the Eberly College of Science)

• 2012: Eberly College of Science Dean's Climate and Diversity Award (Penn State)

• 1995–1998: Hubble Fellowship

• 1992: Allan M. Sachs Award for Outstanding Contributions to Undergraduate Teaching (Columbia University, Physics Department) 

Membership in Professional Organizations

• Since 1994: Member, High-Energy Astrophysics Division of the American Astronomical Society

• Since 1989: Member, American Astronomical Society

Selected Service on Professional Committees and Large Scientific Collaborations

• 2021 summer: Interim Spokesperson, Sloan Digital Sky Survey V

• 2018–present: Co-Chair, SDSS-V Quasar Physics Working Group

• 2017–2024: Member, NASA LISA Study Team

• 2016–2018: Chair, Chandra Users' Group

Sabbatical Visits

• 2020–2021: Center for Theoretical and Observational Cosmology, The Pennsylvania State University

• 2014 spr-summ: Department of Astronomy, University of Washington

• 2013–14 winter: Center for Relativistic Astrophysics, Georgia Institute of Technology

• 2013 summer: Kavli Institute for Theoretical Physics, University of California, Santa Barbara

• 2007 spring: Department of Astrophysics, The American Museum of Natural History

• 2006–2007: Department of Physics and Astronomy, Northwestern University