Radio Interferometers and Beyond Einstein Science
James Ulvestad
National Radio Astronomy Observatory
julvesta@nrao.edu
Additional authors:
Many physical phenomena identified with strong gravity and high energy are associated with strong radio emission, typically by synchrotron processes. Imaging by centimeter-wave radio interferometers thus provides a different window into Beyond Einstein science. This window often is important in constraining physical conditions, and can provide images on scales much smaller than those imaged by many high-energy instruments. This presentation will show a few examples, including the following: (1) Milliarcsecond-scale images of potential gamma-ray blazars. (2) Monitoring of the expansion of gamma-ray bursts. (3) Radio images and constraints on X-ray jets. (4) Imaging and intraday variability of low-luminosity active galaxies. I also will discuss briefly radio interferometers of the next decade, particularly the Expanded Very Large Array, and the capabilities they will make available for Beyond Einstein science.
