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James Ling's Picture
Address:
Jet Propulsion Laboratory
M/S 169-327
4800 Oak Grove Drive
Pasadena, CA 91109
Phone:
818.354.2819
Fax:
818.354.1004
Email:

James Ling

Education
  • B.S., Physics, Oregon State University (1960)
  • M.S., Physics, University of California Berkeley (1963)
  • Ph.D., Physics, University of California San Diego (1974)
  • Executive M.B.A., Claremont Graduate School of Business & Management (1986)
Research Interests
  • Gamma-ray astrophysics - Study the long-term spectral and temporal properties of Black Holes, Neutron Stars and AGN
  • Development of the earth occultation data analysis technique in monitoring gamma-ray sources
Professional Experience
  • Jet Propulsion Laboratory (1989-Present)
    • Manager, Astrophysics and Heliophysics Research & Analysis Program, Astronomy & Physics Directorate (2000-present)
    • IPA Coordinator in the Office of Chief Scientist and Chief Technologist (2003-2006)
    • Project Scientist, Remote Exploration and Experimentation Project (2001-2002)
    • JPL Reengineering Process Owner -"General Scientific Knowledge Processes Design and Conduct Experiments"' (1997)
    • Astrophysics Discipline Program Manager, Jet Propulsion Laboratory, Office of Space Science and Instrument - Managed the JPL Astrophysics Research Program (1992-1994)
    • NASA Headquarters, JPL Detailee, Assisted in the Management of the U.S. Cosmic & Heliospheric Physics Discipline Research Program (1989-1992)
  • NASA Headquarters, Office of Space Science (1997-2000)
    • Discipline Scientist for Cosmic & Heliospheric Physics Program. Manage the basic research programs of the discipline
    • Program Scientist for Solar and Magnetospheric Particles Explorer (SAMPEX), Interplanetary Platform 8 (IMP-8)
    • Deputy Program Scientist for Voyager Interstellar Missions 1 & 2, Ulysses, Advanced Composition Explorer (ACE), Solar Probe, Interstellar Probe, and Advanced Cosmic-ray Composition Experiment for the Space Station (ACCESS)
  • Lecturer in Physics (Peace Corps), University of Ife, Ibadan, Nigeria. (1963-1965)
Selected Publications
  1. Ling, J. C. and Wm. A. Wheaton, "Gamma-Ray Spectral Characteristics of Thermal and Non-Thermal Emission from Three Black Holes" Chinese Journal of Astronomy and Astrophysics, Vol. 5, Suppl, 80-86, (2005)
  2. Case, G. L., Cherry, M. L. Fannin, C., Rodi, J., Ling, J. C., and Wheaton, Wm. A., "Observations of Gamma-Ray outbursts from Galactic Microquasars," Chinese Journal of Astronomy and Astrophysics, Vol 5, Suppl., 341-346, (2005)
  3. Ling, J. C. and Wm. A. Wheaton, "Gamma-Ray Spectral State Transitions of GROJ1719-24,"Ap. J, 622, 492 (2005)
  4. Ling, J. C. and Wm. A. Wheaton, "Gamma-Ray Spectra and Variability of the Crab Nebula Emission Observed by BATSE," Ap. J., 598, 334 (2003)
  5. Ling, J. C. and Wm. A. Wheaton, "BATSE Soft γ-Ray Observations of GROJ0422+32," Ap. J., 584, 399 (2003)
  6. Ling, J. C., "A Review of Cygnus X-1 Soft γ-ray Observations," published in the Gamma-Ray Astrophysics 2001 Conference Proceedings, Ed. Steven Ritz, Neil Gehrels, and Chris R. Shrader, AIP, 587, page 135 (2001)
  7. Wallyn, P., J. C. Ling, W. A. Mahoney, and Wm. A. Wheaton, and P. Durouchoux "BATSE Search for the ~540 keV Feature in the Crab Spectrum Observed by GRANAT-SIGMA," Ap. J., 559, 342 (2001)
  8. McConnell, M. L., Ryan, J. M., Collmar, W., Schonfelder, V., Steinle, H., Strong, A. W., Bloemen, H., Hermsen, W., Kuiper, L., Bennett, K., Phlips, B. F., and Ling, J. C., "A High-Sensitivity Measurrement of the MeV Gamma-Ray Spectrum of Cygnus X-1," Ap. J., 543, 928 (2000)
  9. Ling, J. C., Wm. A. Wheaton, P. Wallyn, R. T. Skelton, W. A. Mahoney, R. G. Radocinski, J. L. Callas, N. F. Ling, E. Tumer, and R. Shubert, "A BATSE Earth Occultation Catalog of ~0.03-1.8 MeV Gamma-Ray Source Spectra and Light Curves for Phases 1-3 (1991-1994)," Astrophysical Journal Supplement Series, 127, 79 (2000)
  10. Kitamoto, S., W. Egoshi, S. Miyamoto, H. Tsunemi, J. C. Ling, Wm. A. Wheaton, and Paul, B. "Ginga All Sky Monitor Observations of Cygnux X-1," Ap. J., 531, 546 (2000)
  11. Ling, J. C., Wm. A. Wheaton, P. Wallyn, W. A. Mahoney, W. A. Paciesas, B. A. Harmon, G. J. Fishman, S. N. Zhang, and X. M. Hua, "Gamma-Ray Spectra & Variability of Cygnux X-1 Observed by BATSE," Astrophysics J, 484: (1) 375-382 Part 1 JUL 20 (1997)
  12. Ling, J. C., "JPL BATSE Earth Occultation Gamma-Ray Source Catalog," invited paper published in the Proceedings for 21st Century Chinese Astronomy Conference, Hong Kong, Ed. K.S. Cheng & K. L. Chan. P.230 (1-4 August, 1996)
  13. Dennis, B. R., R. P. Lin, R. C. Canfield, C. J. Crannell, A. G. Emslie, G. D. Holman, H. S. Hudson, G. J. Hurford, J. C. Ling, N. W. Madden and R. Ramaty, "The High Energy Solar Spectroscopic Imager - HESSI," in Proc. SPIE Proceedings Vol 2804, 228, "Missions to the Sun," Denver, CO (4 - 9 August 1996)
  14. Wheaton, Wm. A., J. C. Ling, W. A. Mahoney, R. G. Radocinski, R. T. Skelton, and P. Wallyn, "Long-Term 0.03 - 1.8 MeV BATSE Monitoring of Centaurus A," Astronomy & Astrophysics Supplement Series, 120, No. 4, 545 (1996)
  15. Wallyn, P., J. C. Ling, Wm. A. Wheaton, W. A. Mahoney, R. G. Radocinski, and R. T. Skelton, "JPL Earth Occultation Analysis of the Galactic Center Region During Flaring of 1E1740.7-2942," Astronomy & Astrophysics Supplement Series, 120, No. 4, 295 (1996)
  16. Ling, J. C., Wm. A. Wheaton, W. A. Mahoney, R. T. Skelton, R. G. Radocinski, and P. Wallyn, "JPL Earth Occultation Analysis Package: Status and Data Products," Astronomy & Astrophysics Supplement Series, 120, No. 4, 677 (1996)
  17. Wheaton, W. A., A. L. Dunklee, A. S. Jacobson, J. C. Ling, W. A. Mahoney, and R. G. Radocinski, "Multi-Parameter Linear Least Squares Fitting to Poisson Data One Count at a Time," Astrophysical Journal, 438, 322 (1995)
  18. Mahoney, W. A., J. C. Ling, and Wm. A. Wheaton, "HEAO 3 Observations of the Galactic Center 511 keV Line," Astrophysical Journal Supplement, 92, 387 (1994)
  19. Mahoney, W. A. Callas, J. L., Ling J. C., Radocinski, R. G., Skelton, R.T., Varnell, L.S., and Wheaton, W.A., "Gamma-Ray Imaging with Germanium Detectors," Astronomy & Astrophysics Supplement Series, 97, 385-388 (1993)
  20. Mahoney, W. A., Ling, J. C., and Wheaton, W. A., "High-Resolution Spectrum of the Galactic-Center," Astronomy & Astrophysics Supplement Series, 97, 159-163 (1993)
  21. Mahoney, W. A., Ling, J. C., Wheaton, W. A. and Higdon, J. C., "HEAO-3 Limits on the Ti44 Yield in Galactic Supernovae," Ap. J., 387, 314-319 (1992)
  22. Schwartz, R. A, Orwig, L. E, Dennis, B. R, Ling, J.C. and Wheaton, W.A., "SMM/HXRBS Observations of Cygnus X-1 from 1986 December to 1988 April," Ap. J, 376, 312-321 (1991)
  23. Ling, J. C., "Gamma-Ray Emission from Black Holes" in "Gamma-Ray Line Astrophysics," Proceedings, ed. Ph. Durouchoux and N. Prantzos, AIP, 232, 407 (1991)
  24. Ling, J. C., and Wm. A. Wheaton, "Search for a Narrow Annihilation Feature Correlated with the MeV Emission of Cygnus X 1," Astrophys. J. (Letters), 343, L57 (1989)
  25. Mahoney, W. A., Varnell, L. S., Jacobson, A. S., Ling, J. C., et al., "Gamma-Ray Observations of Co56 in SN-1987A," Ap. J., 334, L81-L85 (1988)
  26. Ling, J. C., "Gamma-Ray Emission of Cygnus X-1," in Nuclear Spectroscopy of Astrophysical Sources, ed N. Gehrels and G. Share (New York: AIP), 315 (1988)
  27. Ling, J. C., W. A. Mahoney, Wm. A. Wheaton, and A. S. Jacobson, "Long-Term Gamma-Ray Spectral Variability of Cygnus X-1," Ap. J. (Letters), 321, L117 (1987)
  28. Schwartz, R. A., Ling, J. C., Mahoney, W. A., et al., "Gamma-Ray Burst Localization by HEAO-3," Ap. J., 317, 846-851 (1987)
  29. Riegler, G. R., J. C. Ling, W. A. Mahoney, W. A. Wheaton, and A. S. Jacobson, "The Gamma-Ray Spectrum of the Galactic Center Region," Astrophysical Journal (Letters), 294, L13 (1985)
  30. Varnell, L. S. Ling, J. C., Mahoney, W. A., Jacobson, A.S., Pehl, R. H., Goulding, F. S., Landis, D. A., and Luke, P. N., "A Position-Sensitive Germanium Detector for Gamma-Ray Astronomy," IEEE Trans. Nucl. Science, 31, 300-306 (1984)
  31. Marscher A.P., Brecher, K., Wheaton, W. A., Ling, J. C., Mahoney, W. A., Jacobson, A. S., "Search for 511 keV Electron-Positron Annihilation Radiation from Mildly Active Galaxies Using the HEAO-3 Gamma-Ray Spectrometer," Ap. J., 281, 566-569 (1984)
  32. Mahoney, W. A., J. C. Ling, W. A. Wheaton, and A. S. Jacobson, "HEAO 3 Discovery of 26Al in the Interstellar Medium", Astrophysical Journal, 286, 578 (1984)
  33. Mahoney, W. A., J. C. Ling, and A. S. Jacobson, "HEAO 3 Observations of the Crab Pulsar," Astrophysical Journal, 278, 784 (1984)
  34. Lamb, R. C., Ling, J. C., Mahoney, W. A., Riegler, G. R., Wheaton, W. A., and Jacobson, A. S., "Gamma-Ray Line Emission from SS433," Nature, 305: (5929), 37-39 (1983)
  35. Marscher, A. P., Brecher, K., Wheaton, W. A., Ling, J. C., Mahoney, W. A., Jacobson, A. S., "Are Mildly Active Galaxies Sources of e± Annihilation Radiation," AIP Conference Proceeding, 101, 303-308 (1983)
  36. Riegler, G. R., Ling, J. C., Mahoney, W. A., Wheaton, W. A., and Jacobson, A. S., "The Gamma-Ray Spectrum of the Galactic-Center Region," AIP Conference Proceedings, 101, 230-236 (1983)
  37. Ling, J. C., W. A. Mahoney, W. A. Wheaton, A. S. Jacobson, and L. Kaluzienski, "The States of Cygnus X-1," Astrophysical Journal, 275, 307 (1983)
  38. Riegler, G. R., Ling, J. C., Mahoney, W. A., et al., "Gamma-Ray and Optical Observations of the 1979 November 8 Solar Flare," Ap. J., 259, 392 (1982)
  39. Willett, J. B., Ling, J. C., Mahoney, W. A., Riegler, G. R., and Jacobson, A. S., "Evidence for Delayed 2nd Phase Acceleration in Solar-Flares," AIP Conference Proceeding, 77, 401-408 (1982)
  40. Wheaton, W. A., Ling, J. C., Mahoney, W. A., Riegler, G. R., and Jacobson, A. S., "Gamma-Ray Burst Observations by the HEAO-3 High-Resolution Gamma-Ray Spectrometer," AIP Conference Proceeding, 77, 55-65 (1982)
  41. Prince, T. A., J. C. Ling, W. A. Mahoney, G. R. Riegler, and A. S. Jacobson, "A High Resolution Measurement of the 2.223 MeV Neutron Capture Line in a Solar Flare," Astrophys. J. (Lett)., 255, L8l (1982)
  42. Mahoney, W. A., J. C. Ling, A. S. Jacobson, and R. E. Lingenfelter, "Diffuse Galactic Gamma-Ray Line Emission from Nucleosynthetic 60Fe, 26Al, and 22Na: Preliminary Limits from HEAO 3," Astrophys. J., 262, 742 (1982)
  43. Ling, J. C., W. A. Mahoney, J. B. Willett, and A. S. Jacobson, "10 June 1974 Transient," AIP Conference Proceedings, No. 77, 143 (1982)
  44. Mahoney, W. A., Ling, J. C., Jacobson, A. S., "Radiation-Damage of the HEAO C-1 Germanium Detectors," Nuclear Instrument & Methods, 185, 449-458 (1981)
  45. Riegler, G. R., J. C. Ling, W. A. Mahoney, W. A. Wheaton, J. B. Willett, A. S. Jacobson, and T. A. Prince, "Variable Positron Annihilation Radiation from the Galactic Center Region," Astrophysical Journal (Letters), 248, L13 (1981)
  46. Mahoney, W. A., J. C. Ling, and A. S. Jacobson, "HEAO 3 Measurements of the Atmospheric Positron Annihilation Line," Journal of Geophysical Research, 86, 11098 (1981)
  47. Riegler, G. R., Jacabson, A. S., Ling, J. C., Mahoney, W. A., and Wheaton, W. A., "Gamma-Ray and Optical Observation of the 19 October and 8 November 1979 Solar Flares," B. American Physical Society, 25, 597-597 (1980)
  48. Mahoney, W. A., J. C. Ling, A. S. Jacobson, and R. M. Tapphorn, "The HEAO-3 Gamma-Ray Spectrometer," Nuclear Instruments and Methods, 178, 363 (1980)
  49. Willett, J. B., Ling, J. C., Mahoney, W. A., and Jacobson, A. S., "In-Orbit Characteristics of the HEAO-3 High Spectral Resolution Gamma-Ray Spectrometer," B. American Physical Society, 25, 526-526 (1980)
  50. Willett, J. B., Ling, J. C., Mahoney, W. A., and Jacobson, A. S., "Detection of 6.13 MeV Gamma-Rays within and at the Top of the Atmosphere," Ap. J., 234, 753-760 (1979)
  51. Ling, J. C., W. A. Mahoney, J. B. Willett, and A. S. Jacobson, "A Possible Line Feature at 73 keV from the Crab Nebula," Ap. J., 231, 896 (1979)
  52. Gruber, D. E. and Ling, J. C., "Evidence for Detection of 1-10 MeV Emission from Taurus Region in 1971 August," Ap. J., 213, 802-814 (1977)
  53. Ling, J. C., W. A. Mahoney, J. B. Willett, and A. S. Jacobson, "A Search for the Reported 400 keV γ-Ray Line from the Crab Nebula," Nature, 270, 36 (1977)
  54. Ling, J. C., W. A. Mahoney, J. B. Willett, and A. S. Jacobson, "Measurement of 0.511 MeV Gamma Rays with a Balloon-Borne Ge(Li) Spectrometer," Geophys. Res., 82, 1463-1473 (1977)
  55. Ling, J. C. and D. E. Gruber, "Spectra and Angular Distributions of Atmospheric Gamma Rays from 0.3 to 10 MeV at λ = 40," JGR, 62, 1211 (1977)
  56. Ling, J. C., "A Semiempirical Model for Atmospheric Gamma Rays from 0.3 to l0 MeV at λ = 40," J. Geophys. Res., 80, 324l (1975)

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