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 Interstellar and Heliospheric Physics (3263): People
Charles M. (Matt) Bradford's Picture
Jet Propulsion Laboratory
M/S 169-506
4800 Oak Grove Drive
Pasadena, CA 91109
Email Contact:

Charles M. (Matt) Bradford

  • B.S. Physics, Stanford University. (1994)
  • Ph.D. Astronomy, Cornell University, Advisor: Prof. Gordon Stacey. (2000)

Research Interests
  • The properties and energetics of the interstellar medium in galactic nuclei and regions of active star formation.
  • Far-IR - millimeter wave spectroscopic probes of the gas conditions in the Galaxy, nearby galaxies, and at high redshift.
  • Novel ground-based instrumentation to facilitate sensitive new spectroscopic measurements at the Earth's best submillimeter and millimeter-wave sites.
  • Development of technology to realize the astronomical potential of cryogenic orbital far-IR - millimeter wave observatories.


Astrophysical analyses of interstellar conditions Icon Astrophysical analyses of interstellar conditions
and energy flow using far-IR to millimeter wave galaxy spectra from existing instrumentation (Herschel, Z-Spec)

Origins Space Telescope (OST) Icon Origins Space Telescope (OST)
is a NASA study for an 8+ meter cryogenic telescope targeting the earliest heavy element and the formation of life-bearing planets.

Quantum capacitance detector (QCD) Icon Quantum capacitance detector (QCD)
detector development. The QCD is this most sensitive far-IR detector ever made, enabling space-borne spectroscopy at the zodiacal-light limit and now demonstrating far-IR photon counting.

SPICA / SAFARI instrument development Icon SPICA / SAFARI instrument development
is a cryogenic mid- to far-IR telescope concept led by ESA and JAXA with key US detector contributions to the SAFARI far-IR Spectrograph.

SuperSpec Icon SuperSpec
is a wideband millimeter-wave on-chip spectrometer a lithographically-patterned superconducting filterbank and kinetic inductance detectors.

is an experiment to measure the carbon emission from the Universe’s oldest galaxies.

Z-Spec Icon Z-Spec
is a novel millimeter-wave grating spectrometer for observing galaxies throughout cosmic time.

Professional Experience
  • Jet Propulsion Laboratory, Pasadena California, Research Scientist, Astrophysics Element (Oct 2003-Present)
  • California Institute of Technology, Visiting Faculty Associate, (Oct 2005-Present)
  • California Institute of Technology, R,A. Millikan Postdoctoral Scholar, Department of Physics (Jan. 2001 - Sept. 2003)

Selected Awards
  • NASA Exceptional Technology Achievement Award (2010)
  • Lew Allen Award for Excellence (2009)
  • JPL Director's Fellowship (2003-2005)

Selected Publications
  1. Uzgil, Bade D.; Bradford, C. Matt; Hailey-Dunsheath, Steve; Maloney, Philip R.; Aguirre, James E. 2016. Constraining the ISM Properties of the Cloverleaf Quasar Host Galaxy with Herschel Spectroscopy. ApJ 832, 209.
  2. Bradford, C. M.; Goldsmith, P. F.; Bolatto, A.; Armus, L.; Bauer, J.; Appleton, P.; Cooray, A.; Casey, C.; Dale, D.; Uzgil, B.; Aguirre, J.; Smith, J. D.; Sheth, K.; Murphy, E. J.; McKenney, C.; Holmes, W.; Rizzo, M.; Bergin, E.; Stacey, G. 2016.   A Cryogenic Space Telescope for Far-Infrared Astrophysics: A Vision for NASA in the 2020 Decade. arXiv: 1505.05551.
  3. Bradford, C. M.; Hailey-Dunsheath, S.; Shirokoff, E.; Hollister, M.; McKenney, C. M.; LeDuc, H. G.; Reck, T.; Chapman, S. C.; Tikhomirov, A.; Nikola, T.; Zmuidzinas, J. 2014. X-Spec: a multi-object trans-millimeter-wave spectrometer for CCAT. Proc. of the SPIE 9153, 91531Y.
  4. Hailey-Dunsheath, S.; Shirokoff, E.; Barry, P. S.; Bradford, C. M.; Chapman, S.; Che, G.; Glenn, J.; Hollister, M.; Kovács, A.; LeDuc, H. G.; Mauskopf, P.; McKenney, C.; O'Brient, R.; Padin, S.; Reck, T.; Shiu, C.; Tucker, C. E.; Wheeler, J.; Williamson, R.; Zmuidzinas, J. 2015. Low Noise Titanium Nitride KIDs for SuperSpec: A Mm-Wave On-Chip Spectrometer. J. Low Temp. Physics, 184, 180.
  5. Crites, A. T.; Bock, J. J.; Bradford, C. M.; Chang, T. C.; Cooray, A. R.; Duband, L.; Gong, Y.; Hailey-Dunsheath, S.; Hunacek, J.; Koch, P. M.; Li, C. T.; O'Brient, R. C.; Prouve, T.; Shirokoff, E.; Silva, M. B.; Staniszewski, Z.; Uzgil, B.; Zemcov, M. 2014. The TIME-Pilot intensity mapping experiment, Proc. of the SPIE. 9153, 91531W.
  6. Lupu, R. E.; Scott, K. S.; Aguirre, J. E.; Aretxaga, I.; Auld, R.; Barton, E.; Beelen, A.; Bertoldi, F.; Bock, J. J.; Bonfield, D.; Bradford, C. M.; Buttiglione, S.; Cava, A.; Clements, D. L.; Cooke, J.; Cooray, A.; Dannerbauer, H.; Dariush, A.; De Zotti, G.; Dunne, L.; Dye, S.; Eales, S.; Frayer, D.; Fritz, J.; Glenn, J.; Hughes, D. H.; Ibar, E.; Ivison, R. J.; Jarvis, M. J.; Kamenetzky, J.; Kim, S.; Lagache, G.; Leeuw, L.; Maddox, S.; Maloney, P. R.; Matsuhara, H.; Murphy, E. J.; Naylor, B. J.; Negrello, M.; Nguyen, H.; Omont, A.; Pascale, E.; Pohlen, M.; Rigby, E.; Rodighiero, G.; Serjeant, S.; Smith, D.; Temi, P.; Thompson, M.; Valtchanov, I.; Verma, A.; Vieira, J. D.; Zmuidzinas, J.. et al., 2012. Measurements of CO Redshifts with Z-Spec for Lensed Submillimeter Galaxies Disovered in the H-ATLAS Survey, Astrophys. J., 757, 135.
  7. Gong, Y., Cooray, A., Silva, M., Santos, M.G., Bock, J., Bradford, C.M., Zemcov, M., 2012. Intensity Mapping of the [CII] Fine-Structure Line During the Epoch of Reioinzation. Astrophys. J., 745, 49.
  8. Zemcov, M.; Aguirre, J.; Bock, J.; Bradford, C. M.; Czakon, N.; Glenn, J.; Golwala, S. R.; Lupu, R.; Maloney, P.; Mauskopf, P.; Million, E.; Murphy, E. J.; Naylor, B.; Nguyen, H.; Rosenman, M.; Sayers, J.; Scott, K. S.; Zmuidzinas, J., 2012. High Spectral-Resolution Measurement of the Sunyaev-Zel’dovich Effect Null with Z-Spec, Astrophys. J., 749, 114.
  9. Uzgil, B.; Aguirre, J.E.; Bradford, C.M.; and Lidz, A., 2014. Measuring Galaxy Clustering and the Evolution of [C II] Mean Intensity with Far-IR Line Intensity Mapping during 0.5 < z < 1.5. Astrophys. J. 793, article 112.
  10. Beyer, Andrew D.; Kenyon, M.; Echternach, P. M.; Bumble, B.; Runyan, M. C.; Chui, T.; Bradford, C. M.; Holmes, W. A.; Bock, J. J., 2012. Development of fast, background-limited transition-edge sensors for the background-limited infrared/sub-mm spectrograph (BLISS) for SPICA, Proc. of the SPIE, Vol. 8452, 84520G.
  11. Shirokoff, E.; Barry, P. S.; Bradford, C. M.; Chattopadhyay, G.; Day, P.; Doyle, S.; Hailey-Dunsheath, S.; Hollister, M. I.; Kovács, A.; McKenney, C.; Leduc, H. G.; Llombart, N.; Marrone, D. P.; Mauskopf, P.; O'Brient, R.; Padin, S.; Reck, T.; Swenson, L. J.; Zmuidzinas, J., 2012. MKID development for SuperSpec: an on-chip, mm-wave, filter-bank spectrometer, Proc. of the SPIE, Vol. 8452, 84520R.
  12. Bradford, C.M., Bolatto, A. D.; Maloney, P. R.; Aguirre, J. E.; Bock, J. J.; Glenn, J.; Kamenetzky, J.; Lupu, R.; Matsuhara, H.; Murphy, E. J.; Naylor, B. J.; Nguyen, H. T.; Scott, K.; Zmuidzinas, J., 2011. The Water Vapor Spectrum of APM 08279+5255: X-Ray Heating and Infrared Pumping over Hundreds of Parsecs, Astrophys. J.Letters in press.
  13. Bradford, C. M.; Bock, James; Holmes, Warren; Kenyon, M.; Beyer, A.; Werner, M.; Rud, M.; Prouvé, T.; Echternach, P.; Irwin, K.; Cho, S.; Harwit, M.; Stacey, G.; Helou, G.; Armus, L.; Appleton, P.; Smith, J. D.; Gorti, U.; Rieke, G.; Egami, E.; Lester, D.; Glenn, J.; Malkan, M.; Dale, D. 2010, The background-limited infrared-submillimeter spectrograph (BLISS) for SPICA: a design study, Proceedings of the SPIE, vol 7731, 77310S
  14. Bradford, C.M., Aguirre, J.E., Aikin, R., Bock, J.J., Earle, L., Glenn, J., Iname, H., Maloney, P., Matsuhara, H., Naylor, B.J., Nguyen, H.T., and Zmuidzinas, J., 2009. The Warm Molecular Gas Around the Cloverleaf Quasar, Astrophys. J. 705, 112-122.
  15. Naylor, B.J, Bradford, C.M.; Aguirre, J. E.; Bock, J. J.; Earle, L.; Glenn, J.; Inami, H.; Kamenetzky, J.; Maloney, P. R.; Matsuhara, H.; Nguyen, H. T.; Zmuidzinas, J. 2010. A Census of the High-Density Molecular Gas in M82, Astrophys. J. 722, 668-681.
  16. Kamenetzky, J.; Glenn, J.; Maloney, P. R.; Aguirre, J. E.; Bock, J. J.; Bradford, C. M.; Earle, L.; Inami, H.; Matsuhara, H.; Murphy, E. J.; Naylor, B. J.; Nguyen, H. T.; Zmuidzinas, J. 2011. The Dense Molecular Gas in the Circumnuclear Disk of NGC 1068, Astrophys. J. 731, id 83.
  17. Negrello, Mattia et al.; 2010, The Detection of a Population of Submillimeter-Bright, Strongly Lensed Galaxies, Science, 330, 800. (using Z-Spec redshifts)
  18. Beyer, A.D.; Kenyon, M. E.; Echternach, P. M.; Eom, B.-H.; Bueno, J.; Day, P. K.; Bock, J. J.; Bradford, C. M.; 2010, Characterizing silicon-nitride absorbers and support beams for far-infrared/submillimeter transition-edge sensors, Proc. SPIE, 741, 21.
  19. Bradford, C.M., Naylor, B.J., Zmuidzinas, J., Bock, J.J., Dragovan, M., Yun, M., Earle, L., Glenn,J., Matsuhara, H., Ade, P., Duband, L. (2005) "Z-Spec: a broadband millimeter-wave grating spectrometer: design, construction, and first cryogenic measurements," Proc. SPIE 4850, 1137.
  20. Bradford, C.M., Nikola, T., Stacey, G.J., Bolatto, A.D., Jackson, J.M., Savage, M.L., Davidson, J.A., (2004) "High Resolution Imaging of CO (J=7->6) in the Central 2 pc of the Galaxy: Dynamical Heating of the Circumnuclear Disk," Astrophys. J. 623, 866.
  21. Pak, S., Jaffe, D.T., Stacey, G.J, Bradford, C.M., Klumpe, E., Keller, L. (2004), "Near Infrared Molecular Hydrogen Emission from the Central Regions of Galaxies: Regulated Physical Conditions in the Interstellar Medium," Astrophys. J., in press (astro-h403491)
  22. Bradford, C.M., Naylor, B.J., Zmuidzinas, J., Bock, J.J., Dragovan, M., Yun, M., Earle, L., Glenn,J., Matsuhara, H, Ade, P. Duband, L., (2003). "WaFIRS: a waveguide far-IR spectrometer: enabling spectroscopy of high-z galaxies in the far-IR and submillimeter." Proc. SPIE 4850, 1137.
  23. Bradford, C.M., Nikola, T., Stacey, G.J., Bolatto, A.D., Jackson, J.M., Savage, M.L., Davidson, J.A., Higdon, S.J. (2003) "CO (J=7->6) Observations of NGC 253: Evidence for Cosmic-Ray Heated Warm Molecular Gas," Astrophys. J. 586, 891.
  24. Bradford, C.M. & Zmuidzinas, J. (2003), 'The Future of Far-Infrared / Submillimeter Astrophysics with Single-Dish Telescopes,' Invited contribution to the 4th Cologne-Bonn- Zermatt Symposium on the Dense ISM in Galaxies (astro-ph401236).
  25. Bradford, C.M., Stacey, G.J., Swain, M.R., Nikola, T., Bolatto, A.D., Jackson, J.M., Savage, M.L., Davidson, J.A. and Ade, P., (2002), "SPIFI: a direct-detection imaging spectrometer for submillimeter wavelengths, Applied Optics, 41, 2561-2575.
  26. Bradford, C.M., Stacey, G.J., Nikola, T., Bolatto, A.D., Jackson, J.M., Savage, M.L., (2000), "Direct Detection CO (J=7->6) Spectroscopy of the Galactic Center and Starburst Galaxies: SPIFI at the JCMT," in Imaging at Radio through Submillimeter Wavelengths, ASP Proceedings v. 217, p. 43.
  27. Bradford, C.M., Stacey, G.J., Fischer, J., Smith, H.A., Cohen, R.J., Greenhouse, M.A., Lord, S.D., Lutz, D., Maiolino, R., Malkan, M.A., Rieu, N.Q. (1999), "ISO Spectroscopy of OH in the starburst galaxy NGC 253," in The Universe as seen by ISO, Eds. P. Cox & M.F. Kessler, p. 861.

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