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I am a research physicist in the field of space physics--the study of the space environment, encompassing realms from the ionosphere to the magnetosphere to interplanetary space. My current concentration is in the study of the Earth's radiation belts.

My Ph.D. is in physics from the University of Texas at Dallas (in Richardson). My dissertation research examined the relationship of the plasmapause and the outer radiation belt, using observations from the DMSP and SAMPEX satellites. UT-Dallas's William B. Hanson Center for Space Sciences is a leading group in the study of space physics.

My M.S. is in physics from the University of Texas at El Paso in cooperation with the University of Texas at Brownsville. My work there in the relativity group was concerned with data analysis for gravitational wave detection. While there I worked on data analysis methods for triggered burst searches, on stochastic searches, and made two summer research visits to the LIGO-Livingston site.

My B.A. is in astronomy from the University of Texas at Austin. For three years I participated in the Dean's Scholars Program in the College of Natural Sciences.

Contact information:

Dr. Wm. Robert Johnston

Selected writings

Academic publications

• W. R. Johnston, G. P. Ginet, M. J. Starks, J. P. McCollough, J. C. Sanchez, P. Song, I. A. Galkin, U. S. Inan, D. S. Lauben, J. Tu, B. W. Reinisch, I. R. Linscott, K. Roche, S. Stelmash, S. Allgeier, R. Lambour, J. Schoenberg, W. Gillespie, W. M. Farrell, M. A. Xapsos, P. A. Roddy, C. D. Lindstrom, G. F. Pedinotti, S. L. Huston, J. M. Albert, A. J. Sinclair, L. D. Davis, J. A. Carilli, D. L. Cooke, C. W. Parker, 2023, Overview of the Demonstration and Science Experiments (DSX) mission, Journal of Geophysical Research-Space Physics, 128(4):e2022JA030771, doi:10.1029/2022JA030771.
• M. J. Starks, D. S. Lauben, J. M. Albert, W. M. Farrell, I. A. Galkin, G. P. Ginet, U. S. Inan, W. R. Johnston, I. R. Linscott, J. C. Sanchez, P. Song, and J. Tu, 2023, Characteristics of boomerang whistler-mode waves emitted from the DSX spacecraft, Journal of Geophysical Research-Space Physics, doi:1029/2023JA031300.
• J. Tu, P. Song, I. A. Galkin, B. W. Reinisch, W. R. Johnston, M. J. Starks, Y.-J. Su, D. Cooke, G. P. Ginet, U. S. Inan, D. S. Lauben, Y. Miyoshi, S. Matsuda, Y. Kasahara, H. Kojima, and I. Shinohara, 2023, Whistler-mode transmission experiments in the radiation belts: DSX TNT circuit simulation and data analysis, Journal of Geophysical Research-Space Physics, 128:e2022JA030564, doi:10.1029/2022JA030564.
• P. Song, J. Tu, I. A. Galkin, J. P. McCollough, G. P. Ginet, W. R. Johnston, Y.-J. Su, M. J. Starks, B. W. Reinisch, U. S. Inan, D. S. Lauben, I. R. Linscott, W. M. Farrell, S. Allgeier, R. Lambour, J. Schoenberg, W. Gillespie, S. Stelmash, K. Roche, A. J. Sinclair, and J. C. Sanchez, 2022, Discovery and insights from DSX mission’s high-power VLF wave transmission experiments in the radiation belts, Scientific Reports, 12:14304, doi:10.1038/s41598-022-18542-9.
• W. M. Farrell, D. S. Lauben, J. A. Miller, U. S. Inan, I. R. Linscott, I. Galkin, Y.-J. Su, W. R. Johnston, M. J. Starks, J. C. Sanchez, and G. P. Ginet, 2022, Quasi-periodic whistler mode emission in the plasmasphere as observed by the DSX spacecraft, Journal of Geophysical Research-Space Physics, 127(8):e2022JA030327, doi:10.1029/2022JA030327.
• J. P. McCollough, Y. Miyoshi, G. P. Ginet, W. R. Johnston, Y.-J. Su, M. J. Starks, Y. Kasahara, H. Kojima, S. Matsuda, I. Shinohara, P. Song, B. W. Reinisch, I. A. Galkin, U. S. Inan, D. S. Lauben, I. R. Linscott, A. G. Ling, S. Allgeier, R. Lambour, J. Schoenberg, W. Gillespie, S. S. Stelmash, K. Roche, A. J. Sinclair, J. C. Sanchez, G. F. Pedinotti, and J. T. Langhals, 2022, Space-to-space very low frequency radio transmission in the magnetosphere using the DSX and Arase satellites, Earth, Planets and Space, 74:64, doi:10.1186/s40623-022-01605-6.
• R. A. Reid, R. A. Marshall, M. J. Starks, M. E. Usanova, G. R. Wilson, W. R. Johnston, J. C. Sanchez, Y.-J. Su, G. P. Ginet, P. Song, and I. A. Galkin, 2022, Active VLF transmission experiments between the DSX and VPM spacecraft, Journal of Geophysical Research-Space Physics, 127:e2021JA030087, doi:10.1029/2021JA030087.
• P. Song, J. Tu, B. W. Reinisch, I. A. Galkin, and W. R. Johnston, 2021, Whistler mode radiation from a dipole antenna in cold magnetized plasma, IEEE Transactions on Antennas and Propagation, 70(4):2915-2927, doi:10.1109/TAP.2021.3121144.
• W. R. Johnston, 2019, Binary Minor Planets Compilation V3.0 (PDS4), NASA Planetary Data System, urn:nasa:pds:ast_binary_parameters_compilation::3.0, doi:10.26033/bb68-pw96.
• H. Zhao, W. R. Johnston, D. N. Baker, X. Li, B. Ni, A. N. Jaynes, S. G. Kanekal, J. B. Blake, S. G. Claudepierre, G. D. Reeves, and A. J. Boyd, 2019, Characterization and evolution of radiation belt electron energy spectra based on the Van Allen Probes measurements, Journal of Geophysical Research-Space Physics, doi:10.1029/2019JA026697.
• T. W. Jacobson and W. R. Johnston, eds., 2019, Informe Mundial del Aborto, GLC Publications (West Chester, OH).
• E. A. Plis, D. P. Engelhart, R. Cooper, W. R. Johnston, D. Ferguson, and R. C. Hoffmann, 2019, Review of radiation-induced effects in polyimide, Applied Sciences, 9(10):1999, doi:10.3390/app9101999.
• H. Zhao, B. Ni, X. Li, D. N. Baker, W. R. Johnston, W. Zhang, Z. Xiang, X. Gu, A. N. Jaynes, S. G. Kanekal, J. B. Blake, S. G. Claudepierre, M. A. Temerin, H. O. Funsten, G. D. Reeves, and A. Boyd, 2019, Plasmaspheric hiss waves generate a reversed energy spectrum of radiation belt electrons, Nature Physics, 15:367-372, doi:10.1038/s41567-018-0391-6.
• M. J. Mandell, V. A. Davis, J. P. McCollough, W. R. Johnston, D. Cooke, and D. Ferguson, 2019, Nascap-2k modeling of electron and ion fluxes to DSX/LEESA during VLF transmission, AIAA SciTech Forum, AIAA 2019-0312, doi:10.2514/6.2019-0312.
• D. P. Engelhart, E. A. Plis, D. Ferguson, W. R. Johnston, R. Cooper, and R. C. Hoffmann, 2018, Space plasma interactions with spacecraft materials, in Plasma Science and Technology--Basic Fundamentals and Modern Applications, InTechOpen, doi:10.5772/intechopen.78306.
• W. R. Johnston, 2018, Binary Minor Planets Compilation V2.0 (PDS4), NASA Planetary Data System, urn:nasa:pds:ast_binary_parameters_compilation::2.0, doi:10.26033/ra81-9p81 (ADS abstract).
• W. R. Johnston, 2018, TNO and Centaur Diameters, Albedos, and Densities V1.0 (PDS4), NASA Planetary Data System, urn:nasa:pds:tno-centaur_diam-albedo-density::1.0, doi:10.26033/y5sn-4t02 (ADS abstract).
• T. W. Jacobson and W. R. Johnston, eds., 2018, Abortion Worldwide Report, GLC Publications (West Chester, OH).
• T. P. O'Brien, W. R. Johnston, S. L. Huston, C. Roth, T. B. Guild, Y.-J. Su, and R. Quinn, 2018, Changes in AE9/AP9-IRENE version 1.5, IEEE Transactions on Nuclear Science, 65(1):462-466, doi:10.1109/TNS.2017.2771324.
• C. D. Lindstrom, J. Aarestad, J. O. Ballenthin, D. A. Barton, J. M. Coombs, J. Ignazio, W. R. Johnston, S. Kratochvil, J. Love, D. McIntire, S. Quigley, P. Roddy, R. S. Selesnick, M. Sibley, A. Vera, A. Wheelock, and S. Wu, 2018, The Compact Environmental Anomaly Sensor Risk Reduction (CEASE-RR): A pathfinder for operational energetic charged particle sensors, IEEE Transactions on Nuclear Science, 65(1):439-447, doi:10.1109/TNS.2017.2756620.
• W. R. Johnston, 2017, Binary Minor Planets Compilation V1.0 (PDS4), NASA Planetary Data System, urn:nasa:pds:ast_binary_parameters_compilation, doi:10.26033/7gwa-1n70.
• J. P. McCollough, J. M. Quinn, M. J. Starks, and W. R. Johnston, 2017, Intelligent sampling of hazardous particle populations in resource-constrained environments, Space Weather, 15(10):1300-1313, doi:10.1002/2017SW001629.
• M. J. Starks, W. R. Johnston, D. C. Ferguson, S. W. Kahler, C. D. Lindstrom, A. G. Ling, J. P. McCollough, D. M. Ober, J. M. Quinn, R. S. Selesnick, Y.-J. Su-Caton, and A. T. Wheelock, 2016, White paper on ECP energy range and flux requirements, AFRL-RV-PS-TP-2020-0005, DTIC, AD1120231.
• W. R. Johnston, 2016, TNO and Centaur Diameters, Albedos, and Densities V4.0, EAR-A-COMPIL-5-TNOCENALB-V4.0, NASA Planetary Data System, on line (ADS abstract).
• W. R. Johnston, 2016, Binary Minor Planets V9.0, EAR-A-COMPIL-5-BINMP-V9.0, NASA Planetary Data System, on line (ADS abstract).
• W. R. Johnston, T. P. O'Brien, S. L. Huston, T. B. Guild, and G. P. Ginet, 2015, Recent updates to the AE9/AP9/SPM radiation belt and space plasma specification model, IEEE Transactions on Nuclear Science, 62(6):2760-2766, doi:1109/TNS.2015.2476470.
• J. A. Fennelly, W. R. Johnston, D. M. Ober, G. R. Wilson, T. P. O'Brien, and S. L. Huston, 2015, South Atlantic anomaly and CubeSat design considerations, Proc. SPIE 9604, Solar Physics and Space Weather Instrumentation VI, 960406, doi:10.1117/12.2190595.
• W. R. Johnston, 2015, "Multiple craters", "Doublet craters" (with K. Miljković), "Geyser" (with A. A. Pankine), and "Irregular crater" (with R. R. Herrick), Encyclopedia of Planetary Landforms, ed. by H. Hargitai and Á. Kereszturi, Springer-Verlag (New York).
• W. R. Johnston, 2015, TNO and Centaur Diameters, Albedos, and Densities V3.0, EAR-A-COMPIL-5-TNOCENALB-V3.0, NASA Planetary Data System, on line.
• W. R. Johnston, 2015, Binary Minor Planets V8.0, EAR-A-COMPIL-5-BINMP-V8.0, NASA Planetary Data System, on line.
• Y.-J. Su, J. M. Quinn, W. R. Johnston, J. P. McCollough, and M. J. Starks, 2014, Specification of >2 MeV electron flux as a function of local time and geomagnetic activity at geosynchronous orbit, Space Weather, 12(7):470-486, doi:10.1002/2014SW001069.
• W. R. Johnston, 2014, TNO and Centaur Diameters, Albedos, and Densities V2.0, EAR-A-COMPIL-5-TNOCENALB-V2.0, NASA Planetary Data System, on line (ADS abstract).
• W. R. Johnston, 2014, Binary Minor Planets V7.0, EAR-A-COMPIL-5-BINMP-V7.0, NASA Planetary Data System, on line (ADS abstract).
• W. R. Johnston, T. P. O'Brien, G. P. Ginet, S. L. Huston, T. B. Guild, and J. A. Fennelly, 2014, AE9/AP9/SPM: New models for radiation belt and space plasma specification, SPIE 9085, Sensors and Systems for Space Applications VII, 908508, doi:10.1117/12.2049836.
• W. R. Johnston, C. D. Lindstrom, and G. P. Ginet, 2014, CRRES Medium Electron Sensor A (MEA) and High Energy Electron Fluxmeter (HEEF): Cross-calibrated data set description, AFRL-RV-PS-TR-2014-0016, DTIC, ADA604519.
• W. R. Johnston, 2014, GEO-GEO cross-calibration results for AE9 development, AFRL-RV-PS-TR-2014-0017, DTIC, ADA605733.
• G. P. Ginet, T. P. O'Brien, S. L. Huston, W. R. Johnston, T. B. Guild, R. Friedel, C. D. Lindstrom, C. J. Roth, P. Whelan, R. A. Quinn, D. Madden, S. Morley, and Y.-J. Su, 2013, AE9, AP9 and SPM: New models for specifying the trapped energetic particle and space plasma environment, Space Science Reviews, 179(1-4):579-615, doi:10.1007/s11214-013-9964-y.
• W. R. Johnston, 2013, TNO and Centaur Diameters, Albedos, and Densities V1.0, EAR-A-COMPIL-5-TNOCENALB-V1.0, NASA Planetary Data System, on line (ADS abstract).
• W. R. Johnston, 2013, Binary Minor Planets V6.0, EAR-A-COMPIL-5-BINMP-V6.0, NASA Planetary Data System, on line (ADS abstract).
• Y.-J. Su, W. R. Johnston, J. M. Albert, G. P. Ginet, M. J. Starks, and C. J. Roth, 2012, SCATHA measurements of electron decay times at 5 < L ≤ 8, Journal of Geophysical Research-Space Physics, 117:A08212, doi:10.1029/2012JA017685.
• W. R. Johnston, 2012, Binary Minor Planets V5.0, EAR-A-COMPIL-5-BINMP-V5.0, NASA Planetary Data System, on line (ADS abstract).
• W. R. Johnston, 2011, Binary Minor Planets V4.0, EAR-A-COMPIL-5-BINMP-V4.0, NASA Planetary Data System, on line (ADS abstract).
• W. R. Johnston, D. C. Richardson, and K. J. Walsh, 2010, Binary Minor Planets V3.0, EAR-A-COMPIL-5-BINMP-V3.0, NASA Planetary Data System, on line (ADS abstract).
• W. R. Johnston and P. C. Anderson, 2010, Storm time occurrence of relativistic electron microbursts in relation to the plasmapause, Journal of Geophysical Research-Space Physics, 115:A02205, doi:10.1029/2009JA014328 (JGR abstract, ADS abstract).
• W. R. Johnston, D. C. Richardson, and K. J. Walsh, 2009, Binary Minor Planets V2.0, EAR-A-COMPIL-5-BINMP-V2.0, NASA Planetary Data System, on line (ADS abstract).
• W. R. Johnston, 2009, The role of the plasmasphere in radiation belt particle energization and loss, Ph.D. dissertation, Univ. of Texas at Dallas (advisor Phillip C. Anderson). (ADS abstract, Presentation).
• P. C. Anderson, W. R. Johnston, and J. Goldstein, 2008, Observations of the ionospheric projection of the plasmapause, Geophysical Research Letters, 35:L15110, doi:10.1029/2008GL033978 (GRL abstract, ADS abstract).
• B. Rooney and W. R. Johnston, 2007, Letter, More on the adverse effects of abortion, Journal of American Physicians and Surgeons, 12(4):97-98.
• W. R. Johnston, 2007, The role of the plasmasphere in radiation belt particle energization and loss, Ph.D. research proposal, Univ. of Texas at Dallas (advisor Phillip C. Anderson). (Full text and Presentation)
• W. R. Johnston, 2004, Detection strategies for a multi-interferometer triggered search, M.S. thesis, Univ. of Texas at El Paso (advisor Soumya Mohanty). (Full text and Presentation)

Other publications

• T. W. Jacobson and W. R. Johnston, June 2022, State abortion policies: Tables, maps, data, rank, graphs 1821-2022, Global Life Campaign.
• W. R. Johnston, 1 Nov. 2020, United States abortions by mother’s age, AWR Factsheet 6, Global Life Campaign.
• W. R. Johnston, 30 June 2019, Understanding estimates of total worldwide abortions, AWR Factsheet 5, Global Life Campaign.
• W. R. Johnston, 21 June 2019, United States abortions by mother’s age, AWR Factsheet 4, Global Life Campaign.
• W. R. Johnston, 20 June 2019, Abortions by race in the United States, AWR Factsheet 3, Global Life Campaign.
• W. R. Johnston, 18 June 2019, International data on late-term abortions, AWR Factsheet 2, Global Life Campaign.
• W. R. Johnston, 17 June 2019, Late-term abortions in the United States, AWR Factsheet 1, Global Life Campaign.
• W. R. Johnston, 17 June 2019, Abortion data updates for 2014-2018, AWR Working Paper 27, Global Life Campaign.
• W. R. Johnston, 9 June 2019, Estimated levels of sex selection abortion in East Asian countries, AWR Working Paper 20, Global Life Campaign.
• W. R. Johnston, 14 April 2019, Abortions in the United States by race, AWR Working Paper 30, Global Life Campaign.
• W. R. Johnston, 14 April 2019, Data on late-term abortion in the United States, AWR Working Paper 28, Global Life Campaign.
• W. R. Johnston, 9 March 2019, International data on late-term abortion, AWR Working Paper 29, Global Life Campaign.
• W. R. Johnston, 3 March 2019, International statistics on reasons for abortions, AWR Working Paper 16, Global Life Campaign.
• W. R. Johnston, 26 Dec. 2018, United States: Abortion rates by mother’s age, 1970-2014, and estimated abortions, 2015-2017, AWR Working Paper 26, Global Life Campaign.
• W. R. Johnston, 2 Dec. 2018, Abortion statistics for countries of mainland Latin America, AWR Working Paper 22, Global Life Campaign.
• W. R. Johnston, 7 Aug. 2018, United States: Preliminary analysis of grouped trends in state abortion rates, AWR Working Paper 24, Global Life Campaign.
• W. R. Johnston, 23 June 2018, Abortion data updates for 2014-2017, AWR Working Paper 21, Global Life Campaign.
• W. R. Johnston, 27 May 2018, Additional empirical estimates of possible future abortions in Ireland, AWR Working Paper 23, Global Life Campaign.
• W. R. Johnston, 12 May 2018, Austria: Notes on levels of abortion, AWR Working Paper 19, Global Life Campaign.
• W. R. Johnston and T. W. Jacobson, 10 May 2018, The past, present and potential futures of abortion in Ireland: Insights from international abortion data, AWR Working paper 18, Global Life Campaign.
• W. R. Johnston, 30 May 2017, Notes on state trends in abortion in the United States, AWR Working Paper 17, Global Life Campaign.
• W. R. Johnston, 30 May 2017, United States: Estimated abortions, 2012-2015, AWR Working Paper 13, Global Life Campaign.
• W. R. Johnston, 29 May 2017, Austria: Estimated abortions, 1974-2015, AWR Working Paper 5, Global Life Campaign.
• W. R. Johnston, 6 Jan. 2017, Comparison of Abortion Worldwide Report figures to published estimates of global abortions, AWR Working Paper 15, Global Life Campaign.
• W. R. Johnston, 21 Nov. 2016, U.S.S.R. republics: Reported and estimated abortions, 1922-1991, AWR Working Paper 10, Global Life Campaign.
• W. R. Johnston, 25 Oct. 2016, Republic of China (Taiwan): Reported abortions, 1951-2015, AWR Working Paper 14, Global Life Campaign.
• W. R. Johnston, 8 Sept. 2016, Terrorist attacks and other related incidents in the United States, Quantico Sentry, 81:8.
• W. R. Johnston, 30 Aug. 2016, United Kingdom and Ireland: Reported abortions, 1958-2015, AWR Working Paper 11, Global Life Campaign.
• W. R. Johnston, 26 July 2016, Australia: Estimated abortions, 1970-2015, AWR Working Paper 4, Global Life Campaign.
• W. R. Johnston, 22 July 2016, Republic of Korea: Reported and estimated abortions, 1970-2015, AWR Working Paper 8, Global Life Campaign.
• W. R. Johnston, 15 July 2016, Yugoslavia and successor states: Reported and estimated abortions, 1948-2015, AWR Working Paper 12, Global Life Campaign.
• W. R. Johnston, 15 July 2016, South Africa: Estimated abortions, 1997-2015, AWR Working Paper 9, Global Life Campaign.
• W. R. Johnston, 2 July 2016, India: Reported abortions, 1974-2014, AWR Working Paper 7, Global Life Campaign.
• W. R. Johnston, 25 June 2016, Canada: Estimated abortions, 2001-2015, AWR Working Paper 6, Global Life Campaign.
• W. R. Johnston, T. P. O'Brien, and G. P. Ginet, 2015, Release of AE9/AP9/SPM radiation belt and space plasma model version 1.20.002, Space Weather, 13, doi:10.1002/2015SW001212.
• W. R. Johnston, 17 March 2005, Review of fall 2001 anthrax bioattacks, in "Evidence Package for the National Academies' Review 2006-2007," A6-45 for Respiratory Diseases Research Program: National Academies Review, NIOSH, Oct. 2006, on line at CDC.
• W. R. Johnston, ed., Jan. 2004, Introduction to Astronomy Lab Book, Univ. of Texas at Brownsville.
• W. R. Johnston, 29 June 2003, Don't downplay risks of abortion, The Brownsville Herald, p. E3.
• W. R. Johnston, 7 April 2003, Iraq violated 21-year-old deal, The Brownsville Herald, p. A8.
• W. R. Johnston, 17 Aug. 2001, U.S. should have missile defense system, The Brownsville Herald, p. A10.
• W. R. Johnston, 4 April 2001, Facts disprove warnings about global warming, The Brownsville Herald, p. A10, and at Global Warming Debunking News and Views.

Conference presentations

• W. R. Johnston, G. P. Ginet, M. J. Starks, J. P. McCollough, J. C. Sanchez, P. Song, I. A. Galkin, U. S. Inan, D. S. Lauben, J. Tu, B. W. Reinisch, I. R. Linscott, K. Roche, S. Stelmash, S. E. Allgeier, W. M. Farrell, R. Lambour, J. Schoenberg, W. U. Gillespie, M. A. Xapsos, P. A. Roddy, C. D. Lindstrom, G. F. Pedinotti, S. L. Huston, J. M. Albert, J. A. Carilli, D. L. Cooke, A. J. Sinclair, L. D. Davis, C. W. Parker, M. J. Mandell, and V. A. Davis, 2022, The Demonstration and Science Experiments (DSX) mission: Nearly two years of active experiments in the radiation belts, AGU Fall Meeting 2022, abstract #SM44C-03.
• B. P. Beecken and W. R. Johnston, 2022, Simulated charging of Teflon tape in the GEO and polar LEO environments, Spacecraft Charging Technology Conference 2022.
• J. A. Carilli, W. R. Johnston, M. J. Starks, Y.-J. Su, and J. C. Sanchez, Dec. 2021, Search for electron precipitation associated with high power VLF transmissions from the DSX satellite: Results from DSX and POES observations, AGU Fall Meeting 2021, abstract #SM15B-1978.
• W. R. Johnston, G. P. Ginet, J. P. McCollough, Y.-J. Su, M. J. Starks, U. S. Inan, D. S. Lauben, I. R. Linscott, P. Song, B. W. Reinisch, I. A. Galkin, J. Tu, Y. Miyoshi, J. A. Carilli, P. A. Roddy, and the DSX and Arase Science Teams, 10 March 2021, Overview of the DSX satellite mission, 3rd ISEE Symposium, PWING-ERG Conference, abstract #5-2.
• W. R. Johnston, Y.-J. Su, J. A. Carilli, P. A. Roddy, and J. P. McCollough, 7 Dec. 2020, Knocking round the radiation belts: Results from the first year of DSX Space Weather Experiment observations, AGU Fall Meeting 2020, abstract #SM007-01.
• Y.-J. Su, W. R. Johnston, J. P. McCollough II, P. Roddy, and The DSX Science Team, 12 Dec. 2019, DSX Space Weather Experiments--initial results, AGU Fall Meeting, 2019, abstract #SM41E-3288.
• T. W. Jacobson and W. R. Johnston, 6 July 2019, A plethora of abortion data: Late-term abortions, abortions by race and more from the Abortion Worldwide Report project, National Right to Life 2019 Convention, #27.
• W. R. Johnston, T. P. O'Brien, S. Huston, T. Guild, Y.-J. Su, C. Roth, R. Quinn, and J. Charron, 14 May 2019, AE9/AP9-IRENE radiation environment model: Future development plans and needs, Applied Space Environments Conference 2019, abstract #79.
• W. R. Johnston, Y.-J. Su, and J. P. McCollough, 11 Dec. 2018, Space climate trends with attention to the radiation belts, AGU fall meeting, 2018, abstract #SA23B-3187.
• W. R. Johnston, T. P. O'Brien, S. L. Huston, T. Guild, Y.-J. Su, C. Roth, and R. Quinn, 19 July 2018, AE9/AP9-IRENE Version 1.5: Updated space radiation climatology model, COSPAR Scientific Assembly 2018, abstract #C0.1-0006-18.
• W. R. Johnston, T. P. O'Brien, S. L. Huston, T. Guild, Y.-J. Su, C. Roth, and R. Quinn, 15 July 2018, Planned upgrades to the AE9/AP9-IRENE space radiation climatology model, COSPAR Scientific Assembly 2018, abstract #PRBEM.1-0006-18.
• T. W. Jacobson and W. R. Johnston, 30 June 2018, Abortion Worldwide Report: The history, policies, and data, and the means of restoring protection of human life, National Right to Life 2018 Convention.
• W. R. Johnston, Y.-J. Su, T. P. O'Brien, S. L. Huston, T. Guild, and J. P. McCollough, Dec. 2017, Investigations of radiation belt climatology in support of AE9/AP9-IRENE development, AGU fall meeting 2017, abstract #SA23A-2529.
• W. R. Johnston, T. P. O'Brien, S. L. Huston, T. Guild, Y.-J. Su, C. Roth, and R. Quinn, 4 May 2017, The AE9/AP9 radiation and plasma environment models, Space Weather Workshop 2017.
• W. R. Johnston, M. J. Starks, J. P. McCollough, and J. M. Albert, Dec. 2016, The Space Weather (SWx) and Space Effects (SFx) experiments on the DSX spacecraft, AGU fall meeting 2016, abstract #SM23C-09.
• W. R. Johnston, J. McCollough, M. Starks, and J. Albert, Dec. 2015, The Demonstration and Science Experiments (DSX) mission, AGU fall meeting 2015, abstract #SM41A-2472.
• W. R. Johnston, T. P. O'Brien, S. L. Huston, G. P. Ginet, and T. B Guild, 15 July 2015, Recent updates to the AE9/AP9/SPM radiation belt and space plasma specification model, IEEE NSREC 2015, abstract #E-1.
• R. S. Selesnick, J. Albert, W. R. Johnston, J. P. McCollough, X. Li, W. Tu, Dec. 2014, Simulating the decay of inner radiation belt electrons, AGU fall meeting 2014, abstract #SM43B-4311.
• W. R. Johnston, T. P. O'Brien, S. L. Huston, T. B. Guild, and G. P. Ginet, 17 June 2014, AE9/AP9/SPM: Update for the GEM community, GEM Workshop 2014.
• W. R. Johnston, G. P. Ginet, T. P. O’Brien, S. L. Huston, and T. B. Guild, Dec. 2012, AE9, AP9 and SPM: New models of the trapped radiation and space plasma environment, MRQW workshop.
• W. R. Johnston, C. D. Lindstrom, S. Huston, and S. Young, Dec. 2012, CEASE observations of the radiation belts: Elevated protons in the slot region, AGU fall meeting 2012, abstract #SM23B-2312.
• C. D. Lindstrom, W. R. Johnston, S. R. Messenger, and S. Huston, July 2012, Enhanced proton levels in slot region and displacement damager effects on TacSat-4, IEEE NSREC 2012, abstract #PJ-4L.
• W. R. Johnston, C. D. Lindstrom, and S. Huston, June 2012, CEASE observations of the radiation belts: Enhanced protons in the slot region, GEM Workshop 2012.
• W. R. Johnston, C. D. Lindstrom, Y.-J. Su, G. P. Ginet, and T. P. O'Brien, March 2012, Climatology of electron population distributions in the radiation belts, IMC II Workshop.
• W. R. Johnston, C. D. Lindstrom, and G. P. Ginet, Dec. 2010, Characterization of radiation belt electron energy spectra from CRRES observations, AGU fall meeting 2010, abstract #SM33C-1925.
• W. R. Johnston, C. D. Lindstrom, and G. P. Ginet, Sept. 2010, Characterization of radiation belt electron energy spectra from CRRES observations, 11th Spacecraft Charging Technology Conference, abstract #30.
• W. R. Johnston, C. D. Lindstrom, and G. P. Ginet, June 2010, Characterization of relativistic electron energy spectra from CRRES observations, GEM Workshop 2010.
• W. R. Johnston and P. C. Anderson, May 2009, Storm-time occurrence of relativistic electron microbursts in relation to the plasmapause, AGU Joint Session, abstract #SM33A-04 (ADS abstract).
• W. R. Johnston, P. C. Anderson, T. P. O'Brien, and J. Goldstein, Dec. 2008, Relativistic microbursts and their relationship to observed plasmapause location, AGU fall meeting 2008, abstract #SM21A-1668.
• W. R. Johnston, P. C. Anderson, J. Goldstein, and T. P. O'Brien, 16 July 2008, Dynamics of the plasmasphere and the outer radiation belt, COSPAR Scientific Assembly 2008, abstract #PRBEM2-0017-08 (ADS abstract).
• W. R. Johnston, P. C. Anderson, J. Goldstein, and T. P. O'Brien, 23 June 2008, Radiation belt dynamics and the plasmasphere, GEM workshop, abstract #G-25.
• W. R. Johnston, 22 June 2008, The inner magnetosphere: a very quick introduction, student tutorial, GEM Workshop 2008.
• W. R. Johnston, P. C. Anderson, J. Goldstein, and T. P. O'Brien, April 2008, Dynamics of the plasmasphere and the outer radiation belt from DMSP, IMAGE, and SAMPEX observations, Space Weather Workshop, abstract #M-10.
• W. R. Johnston, P. C. Anderson, J. Goldstein, T. P. O'Brien, and S. G. Kanekal, Dec. 2007, Dynamics of the plasmasphere and the outer radiation belt, AGU fall meeting 2007, abstract #SM21A-0323 (ADS abstract).
• W. R. Johnston, P. C. Anderson, J. Goldstein, T. P. O'Brien, and S. G. Kanekal, 18 June 2007, Role of the plasmasphere in radiation belt particle energization and loss from DMSP, IMAGE, and SAMPEX observations, GEM workshop 2007, abstract #IM/S-07.
• W. R. Johnston, 17 June 2007, Introduction to the radiation belts, student tutorial, GEM Workshop 2007.
• W. R. Johnston, P. C. Anderson, J. Goldstein, S. G. Kanekal, and T. P. O'Brien, 22 May 2007, The role of the plasmasphere in radiation belt particle energization and loss, AGU Joint Assembly 2007, abstract #SM24A-07 (AGU abstract, ADS abstract).
• W. R. Johnston, P. C. Anderson, J. Goldstein, S. G. Kanekal, and T. P. O'Brien, Dec. 2006, Relationship between the plasmapause and the outer radiation belt from DMSP, IMAGE, and SAMPEX observations, AGU fall meeting 2006, abstract #SM43B-1491 (ADS abstract).
• W. R. Johnston, P. C. Anderson, J. Goldstein, and S. G. Kanekal, June 2006, Relation of the plasmapause to the outer radiation belt from DMSP, IMAGE, and SAMPEX observations, CEDAR/GEM conferences.
• P. C. Anderson, W. R. Johnston, and J. Goldstein, Dec. 2005, The effects of subauroral electric fields on the structure of the plasmapause, AGU fall meeting 2005, abstract #SM41C-1209 (ADS abstract).
• W. R. Johnston, 14 Dec. 2003, Detection strategies for a multi-interferometer triggered search, CGWA conference.

Unpublished material

• W. R. Johnston, R. Bates, and W.-C. Wong, 16 April 2007, A numerical simulation of the Earth's electron radiation belts, report for PHYS 5413, UTD.
• W. R. Johnston, 13 April 2006, The Earth's plasmasphere and related electrodynamics, report for PHYS 6388, UTD.
• W. R. Johnston, 13 April 2006, Cosmological gravitational waves, report for PHYS 5V49, UTD.
• W. R. Johnston, 22 Nov. 2005 (updated 8 Sept. 2006), The atmospheres of Pluto and trans-Neptunian objects, report for PHYS 6389, UTD.
• W. R. Johnston, 5 Aug. 2003, Teaching about the solar system and solar energy, inservice presentation, Brownsville ISD.
• W. R. Johnston, 7 Feb. 2003 (updated 3 Nov. 2003), A report on the Southern Baptists of Texas Convention.
• W. R. Johnston, 8 Jan. 2003 (updated 18 Jan. 2016), Reasons given for having abortions in the United States.
• W. R. Johnston, J. D. Zamora, and J. A. R. Oliveira, 17 Oct. 2002, Installation suggestions for Cactus WaveToy and required software, report at UTB.
• W. R. Johnston, 31 July 2002, Gravity gradient noise from ground waves, student research project presentation, LIGO-Livingston Observatory.
• W. R. Johnston, May 1994, Investigation of evolution of orbits similar to that of (4179) Toutatis, senior research project, UTA Astronomy Dept.
• W. R. Johnston, April 1985 (updated 18 Aug. 2003), The effects of a global thermonuclear war, report for Dean's Scholars seminar, UTA.
• W. R. Johnston, 1983 (updated 5 June 2001), The effects of a nuclear attack on the Rio Grande Valley.

Misc.

• A collection of letters to the editor and other opinion pieces may be found here.
• Go here for a selection of my efforts at photography, including from travels with my wonderful wife.
• Views expressed on this web site are mine; you need not blame anyone else.

Okay, enough about me...
What about you? Do you know how to have a true relationship with God, one that will last forever?

© 2002-2022, 2023 by Wm. Robert Johnston.
Last modified 6 June 2023.
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