Jim Braatz Bio
I am an astronomer at the National Radio Astronomy Observatory (NRAO) in
Charlottesville, VA, where I work with the North American ALMA Science Center,
supporting science being done with the Atacama Large Millimeter/submillimeter
Array (ALMA). I am also the NRAO Student Programs Coordinator, responsible
for the REU summer student program and other summer internships, the Student
Observing Support program, Reber Doctoral Fellows, and NRAO Co-ops.
My research is centered on
observations of radio emission, mainly masers, from active galaxies.
I am the PI of the Megamaser Cosmology Project (MCP), a multi-year effort that
is measuring the Hubble constant based on geometrically-determined distances
to megamaser galaxies. The project aims to help understand the nature of dark
energy, the mysterious component of the universe that causes the expansion of
the universe to accelerate. The Megamaser Cosmology Project also measures
masses of the black holes that reside in the nuclei of active galaxies.
Education and Employment
- B.A. in Physics, 1988, The Johns Hopkins University
- Employed by ST Systems Corp. at NASA/GSFC 1988-1991
- Ph.D. in Astronomy, 1996, The University of Maryland
- Postdoc at Harvard-Smithsonian CfA, 1997
- Jansky Fellow, NRAO, 1998-2000
- Scientific Staff, NRAO, 2000-present