Dr. Teddy Cheung

Astrophysics Science Division
NASA/GSFC
Code 660, ASD
Greenbelt, MD 20771

tel: 301-286-5749
fax: 301-286-1682
e-mail: Chi.C.Cheung@nasa.gov

Present Position

NASA Postdoctoral Fellow (NPP/ORAU), GLAST-LAT collaboration

Brief Bio

Stanford University, NRAO Jansky Postdoctoral Fellow, Sep. 2005 - Sep. 2007; Instructor, Summer 2007

Massachusetts Institute of Technology, NRAO Jansky Postdoctoral Fellow, Aug. 2004 - Aug. 2005

Harvard-Smithsonian Center for Astrophysics, Visiting Scientist, Feb. 2004 - July 2004

Brandeis University, Graduate Research Student, Sep. 1999 - Jan. 2004; Teaching Assistant (Fall 2000 - Spring 2002)

Space Telescope Science Institute, National Radio Astronomy Observatory, Lowell Observatory, Brandeis University, Research Student, Summers 1997 - 2000

Educational Background

Brandeis University, Ph.D. Physics (2004), M.A. (2001), B.S. Physics & Mathematics (1999)

Research Interests

Extragalactic radio sources, physics of relativistic jets (AGN and galactic binaries), very long baseline interferometry and polarimetry, GLAST and radio studies of galactic transients and radio galaxies (jets and extended lobes)

Current Projects

Chandra X-ray and radio studies of extragalactic jets and the highest-redshift relativistic jets

Spitzer IRAC Survey of Large-scale Jets and Hotspots

Origin of X-shaped Radio Galaxies - radio (VLA, GMRT, VLBI) spectral studies and optical (MMT, HET) spectroscopy

VLBA, VLA, Chandra, HST monitoring of the M87 Jet

Selected Publications

Superluminal Radio Features in the M87 Jet & the Site of Flaring TeV Gamma-ray Emission - Cheung, C.C., D.E. Harris, & L. Stawarz,
Astrophys. J. (Letters), 663, L65-L68

The Electron Energy Distribution in the Hotspots of Cygnus A: Filling the Gap with the Spitzer Space Telescope - Stawarz, L., C.C. Cheung, D.E. Harris, & M. Ostrowski. 2007, Astrophys. J., 662, 213-223

FIRST ‘Winged’ and ‘X’-shaped Radio Source Candidates - Cheung, C.C. 2007, Astron. J., 133, 2097-2121

Compton X-ray and γ-ray Emission from Extended Radio Galaxies - Cheung, C.C. 2007, in The First GLAST Symposium, Eds. S.Ritz, P.Michelson, & C. Meegan, AIP Conf. Ser. 921, 325-326

Confronting X-ray Emission Models with the Highest-Redshift Kiloparsec-Scale Jets: the z=3.89 Jet in Quasar 1745+624 - Cheung, C.C., L. Stawarz, & A. Siemiginowska. 2006, Astrophys. J., 650, 679-692

Shedding New Light on the 3C 273 Jet with the Spitzer Space Telescope - Uchiyama, Y., C.M. Urry, C.C. Cheung, S. Jester, J. van Duyne, P. Coppi, R.M. Sambruna, T. Takahashi, F. Tavecchio, & L. Maraschi. 2006, Astrophys. J., 648, 910-921

The Outburst of HST-1 in the M87 Jet - Harris, D.E., C.C. Cheung, J.A. Biretta, W. Sparks, W. Junor, E.S. Perlman, & A.S. Wilson. 2006, Astrophys. J., 640, 211-218

Publications at the ADS website.