Dr. Gordon Emslie's Home Page
A. Gordon Emslie
Professor and Dean, Graduate College, Oklahoma State University
High-Energy Solar Physics
(405) 744-7099
gordon.emslie@okstate.edu
B.Sc., Physics & Astronomy, 1976, University of Glasgow
Ph.D., Astrophysics, 1979, University of Glasgow
D.Sc., Science, 1997, University of Glasgow
M.S.E., Mechanical Engineering, 1991, The University of Alabama in Huntsville
M.S., Atmospheric Science, 1995, The University of Alabama in Huntsville
M.S., Materials Science, 1998, The University of Alabama in Huntsville
B.A., French, 2005, The University of Alabama in Huntsville
Professor Emeritus of Physics, The University of Alabama in Huntsville
Visiting Professor, Department of Physics & Astronomy, University of Glasgow
Professional Engineer, AL License 25734
Research Summary
The thrust of the bulk of my research for the last 30 years or so has been the study of energy release and transport in solar flares, with emphasis on the diagnostics provided by hard X-ray observations, both spectra, images and polarization. Most recently, this project has been fueled with the exciting new imaging spectroscopy data from the NASA Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) satellite (logo on right), which uses a Fourier transform imaging technique. I have also studied flare electrodynamics and the hydrodynamic response of the solar atmosphere to flare energy input. After the launch of the BATSE instrument on the Compton Gamma Ray Observatory, I spent some time studying the anisotropy and brightness distributions of gamma-ray bursts, and I have dabbled in cosmology, celestial mechanics, and circumstellar polarization.
Figure 1. Left: a composite image (from Hurford et al. 2003) of a solar flare on July 23, 2002. The colored contours show the location of hard X-ray and gamma-ray emission at various energies; one of my research projects was to account for the different locations of the emission at different energies, through a study of particle acceleration in magnetic loops of different lengths. I have also studied the evolution of the partition of energy in this event (right frame), as well as the spatial evolution and polarization of the hard X-ray emission in this event.
Teaching
In the physics department at OSU, I teach introductory and upper level astrophysics courses. I also teach an Honors Seminar course called "Humans - Accident or Necessity," which explores the various rationales (from creationism and intelligent design through chance and observer-induced reality) for humankind's existence. More pragmatically, I teach review sessions for the Fundamentals of Engineering examination each semester. I am a Harlow Shapley lecturer for the American Astronomical Society, under the auspices of which I tour the country giving public lectures.
Other Activities
Most of my spare time I spend giving flight instruction at the OSU Flight Center. I am an FAA-certificated Flight Instructor, an Airframe and Powerplant Mechanic, and a Senior Parachute Rigger. I also own a Piper Twin Comanche, but my favorite airplane to fly is the Douglas DC-3.
Left: 2 DC-3s in flight. Right: View from the flight deck.
I was also a participant on the (then) world-record 246-way formation skydive in July 1999.
Solar Flare Energetics
"Refinements to Flare Energy Estimates - a follow-up to 'Energy Partition in Two Solar Flare/CME Events'," A. G. Emslie, B. R. Dennis, G. D. Holman, and H. S. Hudson, JGR - Space Physics, 110, A11103 (2005).
"Energy Partition in Two Solar Flare/CME Events," A. G. Emslie, H. Kucharek, B. R. Dennis, N. Gopalswamy, G. D. Holman, G. H. Share, A. Vourlidas, T. G. Forbes, P. Gallagher, G. M. Mason, T. R. Metcalf, R. A. Mewaldt, R. J. Murphy, R. A. Schwartz, and T. H. Zurbuchen, JGR - Space Physics, 109, A10104 (2004).
"The Determination of the Total Injected Power in Solar Flare Electrons," A. G. Emslie, Ap. J. (Letters), 595, L119 (2003).
"RHESSI Observations of Particle Acceleration and Energy Release in an Intense Solar Gamma-Ray Line Flare," R. P. Lin, S. Krucker, G. J. Hurford, D. M. Smith, H. S. Hudson, G. D. Holman, R. A. Schwartz, B. R. Dennis, G. H. Share, R. J. Murphy, A. G. Emslie, C. Johns-Krull, and N. Vilmer, Ap. J. (Letters), 595, L69 (2003).
"Energetics of Explosive Events Observed with SUMER," A. R. Winebarger, A. G. Emslie, J. T. Mariska, and H. P. Warren, Ap. J., 565, 1298 (2002).
"H-alpha Polarization During a Well-Observed Solar Flare: Proton Energetics and Implications for Particle Acceleration Processes," A. G. Emslie, J. A. Miller, E. Vogt, J.-C. Hénoux, and S. Sahal-Bréchot, Ap. J., 542, 513 (2000).
"Analyzing the Energetics of Explosive Events Observed by SUMER on SOHO," A. R. Winebarger, A. G. Emslie, J. T. Mariska, and H. P. Warren, Ap. J., 526, 471 (1999).
"Coulomb Energy Losses in the Solar Corona and the Proton Energy Budget in Flares," A. G. Emslie, J. C. Brown, and A. L. MacKinnon, Ap. J., 485, 430 (1997).
"Critical Issues for Understanding Particle Acceleration in Impulsive Solar Flares," J. A. Miller, P. J. Cargill, A. G. Emslie, G. D. Holman, B. R. Dennis, T. N. LaRosa, R. M. Winglee, S. G. Benka, and S. Tsuneta, JGR - Space Physics, 102, 14631 (1997).
"The Viability of Energetic Protons as an Agent for Atmospheric Heating During the Impulsive Phase of Solar Flares," A. G. Emslie, J.-C. Hénoux, J. T. Mariska, and E. K. Newton, Ap. J. (Letters), 470, L131 (1996).
"Radiative Backwarming in White Light Flares," M. E. Machado, A. G. Emslie, and E. H. Avrett, Solar Phys., 124, 303 (1989).
"Models of Flaring Loops," A. G. Emslie, Solar Phys., 121, 105 (1989)
"On the Inability of Magnetically Constricted Transition Regions to Account for the 105 to 106 K Plasma in the Quiet Solar Atmosphere," J. F. Dowdy, Jr., R. L. Moore, and A. G. Emslie, Solar Phys., 112, 255 (1987).
"Collisional Heating by Nonthermal Electrons in a Tapered Magnetic Loop," S. Chandrashekar and A. G. Emslie, Solar Phys., 107, 83 (1987).
"Electron-Heated Flare Models - Alive and Well," A. G. Emslie, Solar Phys., 113, 175 (1987).
"A Mechanism for Deep Chromospheric Heating During Solar Flares," M. E. Machado, A. G. Emslie, and P. J. Mauas, Astr. Ap., 159, 33 (1986)
"The Structure of High Temperature Solar Flare Plasma in Non-Thermal Flare Models - II Comparison with Observations," A. G. Emslie, Solar Phys., 103, 103 (1986).
"Thermal stability of static coronal loops. I - Effects of boundary conditions," S. K. Antiochos, E. C. Shoub, and A. G. Emslie, Ap. J., 298, 876 (1985).
"The Structure of High Temperature Solar Flare Plasma in Non-Thermal Flare Models," A. G. Emslie, Solar Phys., 98, 281 (1985).
"Hard X-Ray Bremsstrahlung Production in Solar Flares by High Energy Proton Beams," A. G. Emslie and J. C. Brown, Ap. J., 295, 648 (1985).
"Energetics of a Double Flare on November 8, 1980," J. G. Doyle, P. B. Byrne, B. R. Dennis, A. G. Emslie, A. I. Poland, and G. M. Simnett, Solar Phys., 98, 141 (1985).
"Microwave Signatures of Thick Target Electron Beams in Solar Flares," A. G. Emslie and D. F. Smith, Ap. J., 279, 882 (1984).
"Energetic Electrons as an Energy Transport Mechanism in Solar Flares," A. G. Emslie, Solar Phys., 86, 133 (1983).
"Chromospheric Heating by Electron and Proton Bombardment in the Solar Flare of June 7, 1980," A. G. Emslie, Solar Phys., 84, 263 (1983).
"Temperature Minimum Heating in Solar Flares by Resistive Dissipation of Alfvén Waves," A. G. Emslie and P. A. Sturrock, Solar Phys., 80, 99 (1982).
"Discrepancies Between Theoretical and Empirical Models of the Flaring Solar Chromosphere and Their Possible Resolution," A. G. Emslie, J. C. Brown, and M. E. Machado, Ap. J., 246, 337 (1981).
"Adiabatic and Non-Adiabatic Processes in Thermal Models of Solar Hard X-Ray Bursts," A. G. Emslie, Ap. J., 244, 653 (1981).
"An Interacting Loop Model for Solar Flare Bursts," A. G. Emslie, Ap. Lett., 22, 171 (1981).
"Radiation Signatures from a Locally Energized Flaring Loop," A. G. Emslie and L. Vlahos, Ap. J., 242, 359 (1980).
"The Effects of Reverse Currents on the Dynamics on Non-Thermal Electron Beams in Solar Flares and on Their Emitted X-Ray Bremsstrahlung," A. G. Emslie, Ap. J., 235, 1055 (1980).
"Energy Release in Solar Flares," A. G. Emslie and D. M. Rust, Solar Phys., 65, 271 (1980).
"A Comparison of High-Temperature Flare Models with Observations and Implications for the Low-Temperature Flare," M. E. Machado and A. G. Emslie, Ap. J., 232, 903 (1979)
"The Heating of the Temperature Minimum Region in Solar Flares - A Reassessment," A. G. Emslie and M. E. Machado, Solar Phys., 64, 129 (1979).
"The Collisional Interaction of Beam of Charged Particles with a Hydrogen Target of Arbitrary Ionization Level," A. G. Emslie, Ap. J., 224, 241 (1978).
"The Structure of the Temperature Minimum Region in Solar Flares and its Significance for Flare Heating Mechanisms," M. E. Machado, A. G. Emslie, and J. C. Brown, Solar Phys., 58, 363 (1978).
Solar Flare Electrodynamics
"The Electrical Current Structure Associated with Solar Flare Electrons Accelerated by Large-Scale Electric Fields," A. G. Emslie and J.-C. Hénoux, Ap. J., 446, 371 (1995).
"Force-Free Fields in Thin Coronal Loops," A. G. Emslie and L. K. Wilkinson, Ap. J., 431, 873 (1994).
"On Neutralized Currents in the Solar Corona," L. K. Wilkinson, A. G. Emslie, and G. A. Gary, Ap. J. Letters, 392, L39 (1992).
"Beam-Return Current systems in Nonthermal Solar Flare Models," T. N. LaRosa and A. G. Emslie, Solar Phys., 120, 343 (1989).
"The Effects of Viewing Angle of the Inference of Magnetic Shear in Preflare Active Regions," L. K. Wilkinson, A. G. Emslie, and G. A. Gary, Solar Phys., 119, 77 (1989).
"A New Quasi-Thermal Trap Model for Solar Flare Hard X-Ray Bursts: An Electrostatic Trap Model," D. S. Spicer and A. G. Emslie, Ap. J., 330, 997 (1988).
"A New Thermal Trap Model for Solar Flare Hard X-Ray Bursts - an Electrostatic Trap Model," D. S. Spicer and A. G. Emslie, Solar Phys., 113, 237 (1987).
"On The Importance of Reverse Current Ohmic Losses in Electron-Heated Solar Flare Atmospheres," A. G. Emslie, Ap. J., 249, 817 (1981).
Solar Atmospheric Hydrodynamics
"Hydrodynamic Modeling of the Response of the Solar Atmosphere to Bombardment by a Beam of Non-Thermal Protons," A. G. Emslie, J. T. Mariska, M. M. Montgomery, and E. K. Newton, Ap. J., 498, 441 (1998).
"Theoretical Study of the Spatially Resolved Soft X-Ray Versus Hard X-Ray Relationship in Solar Flares," P. Li, J. McTiernan, and A. G. Emslie, Ap. J., 491, 395 (1997).
"Testing the Impulsiveness of Solar Flare Heating Through Analysis of Dynamic Atmospheric Response," E. K. Newton, A. G. Emslie, and J. T. Mariska, Ap. J., 459, 804 (1996)"The Velocity Differential Emission Measure - Diagnostic of Bulk Plasma Motion in Solar Flares," E. K. Newton, A. G. Emslie, and J. T. Mariska, Ap. J., 447, 915 (1995).
"Implications of the Soft X-Ray Versus Hard X-Ray Temporal Relationship in Solar Flares," P. Li, A. G. Emslie, and J. T. Mariska, Ap. J., 417, 313 (1993).
"Diagnostics of Electron-Heated Solar Flare Models III - Effects of Tapered Loop Geometry and Preheating," A. G. Emslie, P. Li, and J. T. Mariska, Ap. J., 399, 714 (1992).
"Magnetohydrodynamics of an Impulsively Heated, Hard X-Ray Emitting Filament," G. Roumeliotis and A. G. Emslie, Ap. J., 377, 685 (1991).
"Comparison of Thermal and Nonthermal Hard X-Ray Emission in Electron-Heated Solar Flares," P. Li and A. G. Emslie, Solar Phys., 129, 113 (1990).
"Soft X-Ray Diagnostics of Electron-Heated Solar Flare Atmospheres," P. Li, A. G. Emslie, and J. T. Mariska, Ap. J., 341, 1075 (1989).
"Numerical Simulations of Impulsively Heated Solar Flares," J. T. Mariska, A. G. Emslie, and P. Li, Ap. J., 341, 1067 (1989).
"Self-Similar Lagrangian Hydrodynamics of Beam-Heated Solar Flare Atmospheres," J. C. Brown and A. G. Emslie, Ap. J., 339, 1123 (1989).
"Gasdynamics in the Impulsive Phase of Solar Flares II. The Structure of the Transition Region - A Diagnostic of Energy Transport Processes," A. G. Emslie and F. Nagai, Ap. J., 288, 779 (1985).
"Gasdynamics in the Impulsive Phase of Solar Flares. I. Thick Target Heating by Non-Thermal Electrons," F. Nagai and A. G. Emslie, Ap. J., 279, 896 (1984).
Interpretation of Hard X-Ray Spectra
"Electron-Electron Bremsstrahlung Emission and the Inference of Electron Flux Spectra in Solar Flares," E. P. Kontar, A. G. Emslie, A. M. Massone, M. Piana, J. C. Brown, and M. Prato, Ap. J., 670, 857 (2007).
"Regularized Reconstruction of the Differential Emission Measure from Solar Flare Hard X-ray Spectra," M. Prato, M. Piana, J. C. Brown, A. G. Emslie, E. P. Kontar, and A. M. Massone, Solar Phys., 237, 61 (2006).
"Evaluation of Algorithms for Reconstructing Electron Spectra from their Bremsstrahlung Hard X-Ray Spectra," J. C. Brown, A. G. Emslie, G. D. Holman, C. M. Johns-Krull, E. P. Kontar, R. P. Lin, A. M. Massone, and M. Piana, Ap. J., 643, 523 (2006).
"Determination of Electron Flux Spectra in Solar Flares with an Augmented Regularization Method: Application to RHESSI Data," E. P. Kontar, A. G. Emslie, M. Piana, A. M. Massone, and J. C. Brown, Solar Phys., 226, 317 (2005).
"Generalized Regularization Techniques with Constraints for the Analysis of Solar Bremsstrahlung X-ray Spectra," E. P. Kontar, M. Piana, A. M. Massone, A. G. Emslie, and J. C. Brown, Solar Phys., 225, 293 (2004).
"Anisotropic Bremsstrahlung Emission and the form of Regularized Electron Flux Spectra in Solar Flares," A. M. Massone, A. G. Emslie, E. P. Kontar, M. Piana, M. Prato, and J. C. Brown, Ap. J., 613, 1233 (2004).
"The Determination and Use of Mean Electron Flux Spectra in Solar Flares," J. C. Brown, A. G. Emslie, and E. P. Kontar, Ap. J. (Letters), 595, L115 (2003).
"Electron Bremsstrahlung Hard X-ray Spectra, Electron Distributions, and Energetics in the 2002 July 23 Solar Flare," G. D. Holman, L. Sui, R. A. Schwartz, and A. G. Emslie, Ap. J. (Letters), 595, L97 (2003).
"An explanation for Non-power-law Behavior in the Hard X-ray Spectrum of the July 23, 2002 Solar Flare," E. P. Kontar, J. C. Brown, A. G. Emslie, R. A. Schwartz, and D. M. Smith, Ap. J. (Letters), 595, L123 (2003).
"Regularized Dynamic Electron Flux Spectra in the July 23, 2002 Solar Flare," M. Piana, A. M. Massone, E. P. Kontar, A. G. Emslie, J. C. Brown, and R. A. Schwartz, Ap. J. (Letters), 595, L127 (2003).
"The Effect of Wave Generation on HXR Bremsstrahlung Spectra from Flare Thick Target Beams," E. L. Haydock, J. C. Brown, A. J. Conway, and A. G. Emslie, Solar Physics, 203, 355 (2001).
"An Empirical Method to Determine Electron Energy Modification Rates from Spatially Resolved Hard X-Ray Data," A. G. Emslie, R. K. Barrett, and J. C. Brown, Ap. J., 557, 921 (2001).
"Inversion of Thick-Target Bremsstrahlung Spectra from Nonuniformly Ionized Plasmas," J. C. Brown, G. K. McArthur, R. K. Barrett, S. W. McIntosh, and A. G. Emslie, Solar Phys., 179, 379 (1998).
"Is the 'Superhot' Hard X-Ray Component in Solar Flares Consistent with a Thermal Source?", A. G. Emslie, V. N. Coffey, and R. A. Schwartz, Solar Phys., 122, 313 (1989).
"Analytic Limits on the Form of Spectra Possible from Optically Thin Collisional Bremsstrahlung Source Models," J. C. Brown and A. G. Emslie, Ap. J., 331, 554 (1988).
"A Self Consistent Interpretation of the Solar Flare Extreme-Ultraviolet to Hard X-Ray Ratio in Large Events," T. N. LaRosa and A. G. Emslie, Ap. J., 326, 997 (1988).
"Hard X-Ray Emission in Electron-Heated Solar Flares - A Comparison of Nonthermal and Thermal Contributions," D. G. Brown and A. G. Emslie, Solar Phys., 110, 305 (1987).
"Soft X-Ray Line Profiles in the Impulsive Phase of Electron-Heated Solar Flares," A. G. Emslie and D. Alexander, Solar Phys., 110, 295 (1987).
"The Excitation of the Iron K-alpha Feature in Solar Flares," A. G. Emslie, K. J. H. Phillips, and B. R. Dennis, Solar Phys., 103, 89 (1986).
"Thick Target Bremsstrahlung Interpretation of Short Timescale Solar Hard X-Ray Features," A. G. Emslie, Ap. J., 271, 367 (1983).
"Millisecond Time Variations in Hard X-Ray Solar Flares," A. L. Kiplinger, B. R. Dennis, A. G. Emslie, K. J. Frost, and L. E. Orwig, Ap. J. (Letters), 265, L99 (1983).
"Fast Transients in Hard X-Ray Solar Flares," A. L. Kiplinger, B. R. Dennis, A. G. Emslie, K. J. Frost, and L. E. Orwig, Solar Phys., 86, 239 (1983).
"Application of the Trap-Plus-Precipitation Hard X-Ray Burst Model to the Flare of August 4, 1972," A. G. Emslie, M. G. McCaig, and J. C. Brown, Solar Phys., 63, 175 (1979).
"The Characteristics of Impulsive Solar EUV Bursts," A. G. Emslie and R. W. Noyes, Solar Phys., 57, 373 (1978).
"The Inter-Relationship of Hard X-Ray and EUV Bursts During Solar Flares," A. G. Emslie, J. C. Brown, and R. F. Donnelly, Solar Phys., 57, 175 (1978).
Interpretation of Hard X-Ray Images
"RHESSI Hard X-ray Imaging Spectroscopy of Extended Sources and the Physical Properties of Electron Acceleration Regions in Solar Flares," Y. Xu, A. G. Emslie, and G. J. Hurford, Ap. J., 673, 576 (2008).
"Electron Flux Spectral Imaging of Solar Flares through Regularized Analysis of Hard X-Ray Source Visibilities," M. Piana, A. M. Massone, G. J. Hurford, M. Prato, A. G. Emslie, E. P. Kontar, and R. A. Schwartz, Ap. J., 665, 846 (2007).
"An Explanation for the Different Locations of Electron and Ion Acceleration in Solar Flares," A. G. Emslie, J. A. Miller, and J. C. Brown, Ap. J. (Letters), 602, L69 (2004).
"RHESSI Imaging Spectroscopy of the Large Gamma-Ray Flare of July 23, 2002," A. G. Emslie, E. P. Kontar, S. Krucker, and R. P. Lin, Ap. J. (Letters), 595, L107 (2003).
"On the Hard X-Ray Spatial Structure During the Impulsive Phase of Solar Flares," A. G. Emslie and M. E. Machado, Solar Phys., 107, 263 (1987).
"A Comparison of the Height Distributions of Solar Flare Hard X-Rays in Thick Target and Thermal Models," A. G. Emslie, Ap. J., 245, 711 (1981).
Hard X-Ray Polarization from Solar Flares
"Hard X-Ray Polarization from Non-Vertical Solar Magnetic Loops," A. G. Emslie, H. L. Bradsher, and M. L. McConnell, Ap.J., 674, 570 (2008).
"RHESSI as a Hard X-Ray Polarimeter," M.L. McConnell, J. Ryan, D. M. Smith, R. P. Lin, and A. G. Emslie, Solar Phys., 210, 125 (2002)
"Prospects for Solar Flare X-Ray Polarimetry," G. A. Chanan, A. G. Emslie, and R. Novick, Solar Phys., 118, 309 (1988).
"The Interpretation of Hard X-Ray Polarization Measurements in Solar Flares," J. Leach, A. G. Emslie, and V. Petrosian, Solar Phys., 96, 331 (1985).
"The Polarization and Directivity of Solar Flare Hard X-Ray Bremsstrahlung from a Thermal Source," A. G. Emslie and J. C. Brown, Ap. J., 237, 1015 (1980).
Solar Instrumentation
"The Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI)," R. P. Lin, A. G. Emslie, et al., Solar Phys, 210, 3 (2002)
"Gamma-ray, Neutron, and Hard X-ray Studies and Requirements for a High-Energy Solar Physics Facility," R. Ramaty, B. R. Dennis, and A. G. Emslie, Solar Phys., 118, 17 (1988).
"Imaging Solar Flares in Hard X-rays Using Fourier Telescopes," J. W. Campbell, J. W. Davis, and A. G. Emslie, SPIE, 1743, 433 (1992).
"Imaging the Sun in Hard X-Rays: Spatial and Rotating Modulation Collimators," J. W. Campbell, J. M. Davis, and A. G. Emslie, SPIE, 1549, 155 (1991).
"A Survey of Hard X-Ray Imaging Concepts Currently Proposed for Viewing Solar Flares," J. W. Campbell, J. M. Davis, and A. G. Emslie, SPIE, 1343, 359 (1990).
Gamma-Ray Bursts
"The Compatibility of Friedmann Cosmological Models with Observed Properties of Gamma-Ray Bursts and a Large Hubble Constant," J. M. Horack, T. M. Koshut, R. S. Mallozzi, A. G. Emslie, and C. A. Meegan, Ap. J., 472, 25 (1996).
"Analytic Constraints on Gamma-Ray Burst Luminosity Functions," J. M. Horack, J. Hakkila, A. G. Emslie, and C. A. Meegan, Ap. J., 462, 131 (1996).
"Galactic Gamma-Ray Burst Models: Constraints on the Intrinsic Luminosity Function," J. Hakkila, C. A. Meegan, G. N. Pendleton, J. M. Horack, M. S. Briggs, G. J. Fishman, W. S. Paciesas, and A. G. Emslie, Ap. J., 454, 134 (1995).
"The Effects of Pure Density Evolution on the Brightness Distribution of Cosmological Gamma-Ray Bursts," J. M. Horack, A. G. Emslie, and D. H. Hartmann, Ap. J., 447, 474 (1995).
"Determination of Gamma-Ray Burst Properties Through Integral Moment Self-Consistency Analysis," A. G. Emslie and J. M. Horack, Inverse Problems, 11, 743 (1995).
"Compatibility of the BATSE Gamma-Ray Burst Data with General Friedmann Cosmological Models," A. G. Emslie and J. M. Horack, Ap. J., 435, 16 (1994).
"Implications of the BATSE Data for A Heliocentric Origin of Gamma-Ray Bursts," J. M. Horack, T. M. Koshut, R. S. Mallozzi, S. D. Storey, and A. G. Emslie, Ap. J., 429, 319 (1994).
"Integral Moment Analysis of the BATSE Gamma-Ray Burst Intensity Distribution," J. M. Horack and A. G. Emslie, Ap. J., 428, 620 (1994).
"Constraints on the Luminosity Function of Gamma-Ray Bursts Detected by BATSE," J. M. Horack, A. G. Emslie, and C. A. Meegan, Ap. J. (Letters), 426, L5 (1994).
"A Search for Non-Burst Emission from the Positions of Well-Localized Gamma-Ray Bursts," J. M. Horack and A. G. Emslie, Ap. J., 425, 776 (1994).
"Effects of Location Uncertainties on the Observed Distribution of Gamma-Ray Bursts Detected by BATSE," J. M. Horack, C. A. Meegan, G. J. Fishman, R. B. Wilson, W. S. Paciesas, A. G. Emslie, G. N. Pendleton, and M. N. Brock, Ap. J., 413, 293 (1993).
Cosmology
"Spatially Inhomogeneous Space-Times with A Self-Symmetry of the Second Kind," D. Alexander, R. M. Green, and A. G. Emslie, M.N.R.A.S., 237, 93 (1989).
"Space-Times with Constant Vacuum Energy Density and a Conformal Killing Vector," R. N. Henriksen, A. G. Emslie, and P. S. Wesson, Phys. Rev. D., 27, 1219 (1983).
"The Growth of Density Perturbations in a Friedmann Model Universe with a Decoupled Radiation Field," A. G. Emslie, Ap. Space Sci., 71, 363 (1980).
"Can the Einstein-de Sitter Model Adequately Describe the Universe at any Epoch?", A. G. Emslie and R. M. Green, Ap. Space Sci., 58, 181 (1978).
Celestial Mechanics
"Stability Criteria in Many-Body Systems - I," I. W. Walker, A. G. Emslie, and A. E. Roy, Celest Mech., 22, 371 (1980).
"Studies in the Application of Recurrence Relations to Special Perturbation Methods - V," A. G. Emslie and I. W. Walker, Celest. Mech., 19, 147 (1979).
Circumstellar Polarization
"Polarization by Thomson Scattering in Optically Thin Stellar Envelopes - II," J. C. Brown, I. S. McLean, and A. G. Emslie, Astr. Ap., 68, 415 (1978).
Book
"The Physics of Solar Flares", E. A. Tandberg-Hanssen and A. G. Emslie, Cambridge University Press (1988).
Book Chapters
"Particle Acceleration," A. G. Emslie and J. A. Miller, in The Dynamic Sun (ed. B. N. Dwivedi), Cambridge University Press, p. 262 (2002).
"Prospects for Hard X-Ray Solar Flare Polarimetry with RHESSI," M. L. McConnell, D. M. Smith, A. G. Emslie, R. P. Lin, and J. M. Ryan, in Multi-Wavelength Observations of Coronal Structure and Dynamics (eds. P. C. H. Martens and D. P. Cauffman), Pergamon Press, p. 431 (2002).
"Scientific Results from RHESSI - A Preview," A. G. Emslie, in Multi-Wavelength Observations of Coronal Structure and Dynamics (eds. P. C. H. Martens and D. P. Cauffman), Pergamon Press, p. 371 (2002).
"Dynamical Response of the Solar Atmosphere to Flare Heating," E. K. Newton, A. G. Emslie, and J. T. Mariska, in Magnetodynamic Phenomena in the Solar Atmosphere - Prototypes of Stellar Magnetic Activity (eds. Y. Uchida et al.), p. 559 (1996).
"The NASA High Energy Solar Physics (HESP) Mission for the Next Solar Maximum," R. P. Lin, B. R. Dennis, R. Ramaty, A. G. Emslie, R. C. Canfield, and G. A. Doschek, Geophysics Monograph Series, 84, 283 (1994).
"Energy Release and Transport in Solar Flares," A. G. Emslie, in The Sun-A Laboratory for Astrophysics (eds. J. T. Schmelz and J. C. Brown), NATO Advanced Study Institute, p. 489 (1992).
"High Energy Flare Emissions," A. G. Emslie, in The Sun-A Laboratory for Astrophysics (eds. J. T. Schmelz and J. C. Brown), NATO Advanced Study Institute, p. 475 (1992).
"Overview of Solar Flares," A. G. Emslie, in The Sun-A Laboratory for Astrophysics (eds. J. T. Schmelz and J. C. Brown), NATO Advanced Study Institute, p. 465 (1992).
"Theoretical Motivation for High Spatial Resolution Hard X-Ray Observations During Solar Flares," A. G. Emslie, in Solar Flares and Coronal Physics Using P/OF as a Research Tool, NASA CP-2421, p. 132 (1986).
"Quasi-Linear Relaxation of Thick-Target Electron Beams in Solar Flares," K. G. McClements, J. C. Brown and A. G. Emslie, in Rapid Fluctuations in Solar Flares, NASA CP-2449, p. 373 (1986).
"The Structure and Response of the Chromosphere to Radiation Backwarming During Solar Flares," A. G. Emslie, in The Lower Atmosphere of Solar Flares (ed. D. F. Neidig), p.182 (1986).
"Impulsive Phase Transport," R. C. Canfield, A. G. Emslie, and 14 co-authors, Chapter 3 of Energetic Phenomena of the Sun, NASA CP-2439, Chapter 3 (1986).
"The Chromosphere and Transition Region," R. C. Canfield, J. C. Brown, G. E. Brueckner, J. W. Cook, I. J. D. Craig, G. A. Doschek, A. G. Emslie, J.-C. Hénoux, B. W. Lites, M. E. Machado, and J. H. Underwood, in Solar Flares - A Monograph from Skylab Solar Workshop II (ed. P. A. Sturrock), Boulder, Colorado Associated University Press (1980).
"Energy Release in Solar Flares," D. M. Rust and A. G. Emslie, WDCA Report UAG-72, Boulder, Colorado (1979).
Conference Proceedings
"High-Energy Solar Flare Observations at the Y2K Maximum," A. G. Emslie, in AIP Conference Proceedings, 510, The Fifth Compton Symposium (eds. M. L. McConnell and J. M. Ryan), p.551 (2000).
"High-Energy Solar Spectroscopic Imager (HESSI) Small Explorer Mission for the next (2000) Solar Maximum," R. P. Lin, A. G. Emslie, et al., in Proc. SPIE Vol. 3442, Missions to the Sun II, (ed. C. M. Korendyke), p. 2 (1998).
"Constraints on the Luminosities of Galactic Gamma-Ray Bursts," J. Hakkila, C. A. Meegan, J. M. Horack, G. N. Pendleton, M. S. Briggs, W. S. Paciesas, and A. G. Emslie, in Proceedings of the San Diego Conference on Gamma-Ray Bursts (1996).
"Summary and Discussion," A. G. Emslie, in Magnetic Reconnection in the Solar Atmosphere, ASP Conference Series, 111, p. 419 (1996).
"The NASA High Energy Solar Physics Mission (HESP)," B. R. Dennis, A. G. Emslie, R. Canfield, G. Doschek, R. P. Lin and R. Ramaty, in High Energy Solar Phenomena - A New Era of Spacecraft Measurements, AIP Conference Proceedings No. 294 (eds. J. M. Ryan and W. T. Vestrand), p. 230 (1994).
"Effects of Location Uncertainties on the Observed Distribution of Gamma-Ray Bursts Detected by BATSE," J. M. Horack, C. A. Meegan, G. J. Fishman, R. B. Wilson, M. N. Brock, W. S. Paciesas, A. G. Emslie, and G. N. Pendleton, Proceedings of the BATSE Gamma-Ray Burst Workshop, AIP Conference Proceedings No. 280, 714 (1993).
"Active Gravity Gradient Torque Control for Earth-Orbiting Satellites Using Time-Varying Systems Analysis," A. G. Emslie and J. Zhu, Proceedings, 23rd IEEE Southeast Symposium on System Theory, Columbia, SC, p. 305 (1991).
"Active Gravity Gradient Torque Control for Earth-Orbiting Astronomical Telescopes," A. G. Emslie and J. Zhu, Proceedings, American Control Conference, Boston, MA, p. 833 (1991).
"Driving of Solar P-Modes by Radiative Pumping in the Upper Photosphere," J. M. Fontenla, A. G. Emslie, and R. L. Moore, In Astrophysics in Antarctica (ed. D. J. Mullan) (1990).
"Solar Flare X-Ray Polarimeter Utilizing a Large Area Thin Beryllium Scattering Disk," E. Gotthelf, T. Hamilton, R. Novick, G. Chanan, A. G. Emslie, and M. Weisskopf, Proc. SPIE 33rd Annual Int. Symp. (1989).
"Diagnostics of Energy Transport Mechanism in Solar Flares," A. G. Emslie, in Proceedings of the Second Indo/U.S. Workshop on Solar-Terrestrial Physics (eds. M. R. Kundu et al.), p. 247 (1986).
"An Interacting Loop Model for Solar Flare Bursts," A. G. Emslie, in Solar Maximum Year, Proceedings of the SMY Workshop, Crimea, 23-29 March 1981 (ed. V. N. Obridko), p. 229 (1982).
"Observational Signatures of Thermal and Non-Thermal Models of Hard X-Ray Emission in Solar Flares," A. G. Emslie, in Solar Maximum Year, Proceedings of the SMY Workshop, Crimea, 23-29 March 1981 (ed. V. N. Obridko), p. 118 (1982).
"The Crimean Solar Maximum Year Workshop," A. G. Emslie, V. Gaizauskas, and S. T. Wu, Stanford University Institute for Plasma Research Report #841 (1981).
Monograph Co-authorships
"A Space Physics Paradox - Why has Increased Funding been accompanied by Decreased Effectiveness in the Conduct of Space Physics Research?", National Research Council (1994).
"America's Academic Future - A Report of the Presidential Young Investigator Colloquium on U.S. Engineering, Mathematics, and Science Education for the Year 2010 and Beyond," NSF Publications (1992).
Theses and Dissertations
"Determination of Self-Diffusion Coefficients in Liquid Metals through Self-Absorptive Ray-Trace Modeling of Radioactive Tracer Emissions," A. G. Emslie, M.S. Thesis, The University of Alabama in Huntsville (1998).
"The Physics of Solar Flares and Cosmic Gamma-Ray Bursts," A. G. Emslie, D.Sc. Thesis, The University of Glasgow (1997).
"Astronomical Influences and Long-Term Trends in Terrestrial Temperature," A. G. Emslie, M.S. Thesis, The University of Alabama in Huntsville (1995).
"Mechanisms of Energy Transport in Solar Flares and Their Associated Radiation Signatures," A. G. Emslie, Ph.D. Thesis, The University of Glasgow (1979).
Popular Article
"Explosions in the Solar Atmosphere," A. G. Emslie, Astronomy, 15, #11, 18 (1987).
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