Present PositionAstrophysicistBrief BioPrevious Positions1980 - present - NASA/Goddard Space Flight Center, Astrophysics Science Division1979 - 1980 - NAS Research Associate, NASA/GSFC 1979 - Research Assistant, University of Massachusetts, Amherst 1975 - Summer Research Assistant, N.R.A.O., Charlottesville, Virginia 1974 - 1978 - Teaching Assistant, University of Massachusetts, Amherst Awards1978-1979, American Association of University Women Fellow1994, NASA Exceptional Scientific Achievement Medal Honors1992, Fellow, American Physical SocietyEducational Background1979 - Ph.D. Astronomy, University of Massachusetts, Amherst1977 - M.S. Astronomy, University of Massachusetts, Amherst 1974 - University of Edinburgh, Scotland 1973 - B.A. Physics, Bryn Mawr College Research InterestsX-Ray and Gamma-Ray Astrophysics, Neutron StarsCurrent ProjectsSelected PublicationsRecent Invited Talks``The Geminga Fraction", invited talk at Multi-Messenger Approach to High-Energy Gamma-RaySources, Barcelona, Spain, July 2006. ``Acceleration and High Energy Emission From the Polar Cap and Slot Gap", invited talk at 363th Heraeus-Seminar on Neutron Stars and Pulsars, Bad Honnef, Germany, May 2006. ``High Energy Emission from Rotation-Powered Pulsars and Magnetars", invited talk at Astrophysical Sources of High Energy Particles and Radiation, Torun, Poland, June 2005. ``Pulsar Emission: Is It All Relative?", invited talk at Texas Symposium on Relativistic Astrophysics, Stanford, CA, December 2004. ``Pulsars: The Unexplored GeV-TeV Energy Band", invited talk at the GLAST Collaboration Meeting, SLAC, CA, September 2004. ``High-Energy Gamma-Rays from Pulsars, Pulsar Winds and Plerions", invited talk at International Symposium on High-Energy Gamma-Ray Astronomy, Heidelberg, Germany, July 2004. ``Polarization of Pulsar Emission in Polar Cap Models", invited talk at Workshop on X-Ray Polarimetry, SLAC, CA, February 2004. ``What Can We Learn About Pulsar Emission from an Eclipsing Binary?", invited talk at Aspen Winter Workshop on Binary Radio Pulsars, Aspen, CO, January 2004. ``Gamma-Ray Pulsars: Models, Population Studies and Gamma-Ray Sources", invited talk at the 4th AGILE Workshop, Rome, Italy, June 2003. ``Gamma-Ray Pulsars and Unidentified EGRET Sources", colloquium at UMD, College Park, MD, March 2003. ``New Radio Pulsars and Unidentified EGRET Sources", talk at GLAST Collaboration Meeting, GSFC, October 2002. ``Physical Processes in Strong Magnetic Fields of Neutron Stars", invited talk at Workshop on Pulsars, AXPs and SGRs Observed by BeppoSax and Other Observatories, Marsala, Sicily, September 2002. ``Gamma Rays From Isolated Pulsars", invited talk at Rencontres de Moriond 2002, Les Arcs, France, March 2002. ``Polar Cap Emission: Modeling Acceleration and Geometry", invited talk at GLAST Science Working Group Meeting, December 2001. ``Thermal X-Ray Emission from Polar Cap Heating in Rotation-Powered Pulsars", talk at Penn State Univ., October 2001. ``Gamma-Ray Emission from Pulsars", invited talk at Gamma 2001, Baltimore, MD, April 2001. ``Pulsars and Unidentified Gamma-Ray Sources", invited talk at HEAD 2000, Honolulu, HW, November 2000. ``Pulsar Emission Mechanisms and the Nature of Central Sources in Young Supernova Remnants", invited talk at UMD Conference on Young Supernovae, October 2000. ``High Magnetic Field Pulsars and Magnetars", invited talk at Workshop on Young Neutron Stars, ITP, Santa Barbara, CA, October 2000. ``Gamma-Ray Pulsars: Models and Predictions", invited talk at International Symposium on High-Energy Gamma-Ray Astronomy, Heidelberg, Germany, June 2000. ``Magnetars: Nature's Strongest Magnetic Fields", Scientific Colloquium, GSFC, January 2000. Recent Publications2006"Pulsar High-Energy Emission From the Polar Cap and Slot Gap", 2006, A. K. Harding, Stronger Lecture Notes, in press. 2006 "Resonant Compton Upscattering in Anomalous X-Ray Pulsars", 2006, M. G. Baring & A. K. Harding, Ap. Space. Sci., in press. 2006 "Population Statistics Study of Radio and Gamma-Ray Puslars in the Galactic Plane, 2006, P. L. Gonthier, S. A. Story, B. D. Clow & A. K. Harding, A & A, in press. 2006 "The Geminga Fraction", 2006, A. K. Harding, I. A. Grenier & P. L. Gonthier, A & A, in press. 2006 "Correlations Between Pulsed X-Ray Flux and Radio Arrival Time in the Vela Pulsar", 2006, A. Lommen, J. Donovan, C. Guinn, Z. Arzoumanian, A. Harding, M. Strickman, R. Dodson, P. McCulloch & D. Moffett, ApJ, in press. 2006 "Physics of Strongly Magnetized Neutron Stars", 2006, A. K. Harding & D. Lai, Rep. Prog. Phys., 69, 2631 2005 "Effects of Rotation and Relativistic Charge Flow on Pulsar Magnetospheric Structure", 2005, A. G. Muslimov & A. K. Harding, ApJ, 630, 454. 2005 "Spin-Dependent Cyclotron Decay Rates in Strong Magnetic Fields", 2005, M. G. Baring, P. L. Gonthier & A. K. Harding, ApJ, 630, 430. 2005 "High-Energy Emission From Millisecond Pulsars", 2005, A. K. Harding, V. V. Usov & A. G. Muslimov, ApJ, 622, 531. 2004 "Particle Acceleration in Pair-Starved Pulsars", 2004, A. Muslimov & A. K. Harding, ApJ, 617, 471. 2004 "Revealing the X-Ray Emission Processes of Old Rotation-Powered Pulsars: XMM-Newton Observations of PSR B0950+08, PSR B0823+26 and PSR J2043+2740", 2004, W. Becker, M. C. Weisskopf, A. F. Tennant, A. Jessner, J. Dyks, A. K. Harding & S. N. Zhang, ApJ, 615, 908. 2004 "Magnetic Field Sweepback in Models of Pulsar Radio Emission", 2004, J. Dyks & A. K. Harding, ApJ, 614, 869. 2004 "Relativistic Effects and Polarization in Three High Energy Pulsar Models", 2004, Dyks, J., Harding, A. K. & Rudak, B., ApJ, 606, 1125. 2004 "Role of Beam Geometry in Population Statistics and Pulse Profiles of Radio and Gamma-Ray Pulsars", P. G. Gonthier, Van Guilder, R. & Harding, A. K., 2004, ApJ, 604, 775. 2004 "High-Altitude Particle Acceleration and Radiation in Pulsar Slot Gaps" A. Muslimov & A. K. Harding, 2004, ApJ, 606, 1143. 2004 "On the Methods of Determining the Geometry of Radio Emission from Pulsar Magnetospheres", J. Dyks, B. Rudak & A. K. Harding, 2004, ApJ, 607, 939 2003 "High Energy Neutrinos From Magnetars", B. Zhang, Z. G. Dai, P. Meszaros, E. Waxman & A. K. Harding, 2003, ApJ, 595, 346.. 2003 "Extended Acceleration in Slot Gaps and Pulsar High Energy Emission", A. Muslimov & A. K. Harding, 2003, ApJ, 588, 430. 2002 "Regimes of Pulsar Pair Formation and Particle Energetics", A. K. Harding, A. Muslimov & B. Zhang, 2002, ApJ, 576, 366. 2002 "The Multi-Component Nature of the Vela Pulsar Nonthermal X-Ray Spectrum", A. K. Harding, M. S. Strickman, Gwinn, C., McCulloch, P. & Moffet, D., 2002, ApJ, 576, 376. 2002 "Pulsar Polar Cap Heating and Surface Thermal X-Ray Emission II. Inverse Compton Radiation Pair Fronts", A. K. Harding & A. Muslimov, 2002, ApJ, 568, 862. 2002 "Galactic Populations of Radio and Gamma-Ray Pulsars in the Polar Cap Model", P. L. Gonthier, M. S. Ouelliette, J. Berrier, A. K. Harding and S. O'Brien, 2002, ApJ, 565, 482. 2001 "Pulsar Polar Cap Heating and Surface Thermal X-Ray Emission I. Curvature Radiation Pair Fronts", A. K. Harding & A. Muslimov, 2001, ApJ, 556, 987. 2001 "Photon Splitting and Pair Creation in Highly Magnetized Pulsars", M. G. Baring & A. K. Harding, 2001, ApJ, 547, 929. 2001 "Off-Beam Gamma-Ray Pulsars and Unidentified EGRET Sources in the Gould Belt", A. K. Harding & B. Zhang, 2001, ApJ Letters, 548, 37. 2000 "A Unified Picture of High Magnetic Field Pulsars and Magnetars", B. Zhang & A. K. Harding, 2000, ApJ Letters, 535, L51. 2000 "On the Effect of Anisotropic Photon Injection on Cyclotron Line Features", R. A. Araya-Gochez & A. K. Harding, 2000, ApJ, 544, 1067. 2000 "Radio Pulsar Death Lines Revisited: Is PSR J2144-3933 Anomalous?", B. Zhang, A. K. Harding & A. G. Muslimov, 2000, ApJ Letters, 531, L135. 2000 "Compton Scattering in Ultra-Strong Magnetic Fields: Numerical and Analytical Behavior in the Relativistic Regime", P. L. Gonthier, A. K. Harding, M. G. Baring, R. M. Costello & C. L. Mercer, 2000, ApJ, 540, 907. 2000 "Full Polar Cap Cascade Scenario: Gamma-Ray and X-Ray Luminosities from Spin-Powered Pulsars", B. Zhang & A. K. Harding, 2000, ApJ, 532, 1171. 1999 `Magnetar Spin-Down", A. K. Harding, I. Contopoulos & D. Kazanas, 1999, ApJ Letters, 525, L125. 1999 "An RXTE Observation of the Vela Pulsar: Filling in the X-Ray Gap", M. S. Strickman, A. K. Harding & O. C. De Jager, 1999, ApJ, 524, 373.
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