Author affiliations
1 Australia Telescope National Facility, Commonwealth Scientific and Industrial Research Organization, P. O. Box 76, Epping NSW 2122, Australia
2 National Radio Astronomy Observatory, P.O. Box 0, Socorro, NM 87801
3 Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109
4 National Astronomy Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
5 Centre for Astrophysics and Supercomputing, Swinburne University of Technology, P.O. Box 218, Hawthorn, VIC 3122, Australia
6 National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville,VA 22903
7 Physics and Astronomy Department, University of Calgary, 2500 University Drive NW, Calgary, AL T2N 1N4, Canada
8 Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan
9 Dominion Radio Astrophysical Observatory, P.O. Box 248, White Lake Road, Penticton, BC V2A 6K3, Canada
10 FÖMI Satellite Geodetic Observatory, P.O. Box 585, H-1592 Budapest, Hungary
11 Joint Institute for VLBI in Europe, P.O. Box 2, 7990 AA Dwingeloo, The Netherlands
12 Physics Department, Purdue University, 525 Northwestern Avenue, West Lafayette, IN 47907-2036
13 Department of Physics and Astronomy, Whittier College, 13406 East Philadelphia Street, Whittier, CA 90608
14 Shanghai Astronomical Observatory, 80 Nandan Road, Shanghai 200030, China
15 Physics Department, Furman University, 3300 Poinsett Highway, Greenville, SC 29613
