Fundamental Technologies

Voyager LECP Pages

Kurth, W. S., D. A. Gurnett, R. B. Decker, M. E. Hill, T. P. Armstrong, and G. Gloeckler, Plasma Waves Associated with the Termination Shock, in Physics of the Inner Heliosheath: Voyager Observations, Theory and Future Prospects, IGPP 5th Internat. Astrophys. Conf., J. Heerikhuisen et al., eds., American Institute of Physics, CP858, 116, 2006.

Mosley, C. J., and T. P. Armstrong, Solar Control of Pre-Termination Shock Energetic Particle Variations Observed at Voyager 1, Geophys. Res. Lett., 33, L18102, doi:10.1029/2006GL026732, 2006. Abstract, with link to full article.

Sittler, E. C., Jr., R. E. Johnson, H. T. Smith, J. D. Richardson, S. Jurac, M. Moore, J. F. Cooper, B. H. Mauk, M. Michael, C. Paranicas, T. P. Armstrong, and B. Tsurutani, J. Geophys. Res., 111, A09223, doi:10.1029/2004JA010509, 2006. Abstract, with link to full article.

Decker, R. B., S. M. Krimigis, E. C. Roelof, M. E. Hill, T. P. Armstrong, G. Gloeckler, D. C. Hamilton, and L. J. Lanzerotti, Voyager 1 in the Foreshock, Termination Shock, and Heliosheath, Science, 309, 2020, 2005. Abstract, with link to full article.

Armstrong, T. P., J. W. Manweiler, N. Krupp, A. Lagg, S. Livi, S. M. Krimigis, D. G. Mitchell, and L. J. Lanzerotti, Comparison of Initial Cassini/LEMMS and Voyager 1 and 2 Low Energy Charged Particle Trapped Radiation Observations, 35th COSPAR Scientific Assembly, Paris, July 18-25, 2004.

Paranicas, C., R. B. Decker, B. H. Mauk, S. M. Krimigis, T. P. Armstrong, and S. Jurac, Energetic Ion Composition in Saturn's Magnetosphere Revisited, Geophys. Res. Lett., 31, 4810, doi:10.1029/2003GL018899, 2004. Abstract, with link to full article.

Krimigis, S. M., R. B. Decker, M. E. Hill, T. P. Armstrong, G. Gloeckler, D. C. Hamilton, L. J. Lanzerotti, and E. C. Roelof, Voyager 1 Exited the Solar Wind at a Distance of ~85 AU from the Sun, Nature, 426, 45, 2003. Abstract, with link to full article.

Paranicas, C., B. H. Mauk, R. E. McEntire, and T. P. Armstrong, The Radiation Environment near Io, Geophys. Res. Lett., 30, 1919, doi:10.1029/2003GL017682, 2003. Abstract, with link to full article.

Krimigis, S. M., R. B. Decker, T. P. Armstrong, C. J. Mosley, D. C. Hamilton, and G. Gloeckler, Low-Energy Oxygen Ions Observed at Voyagers 1 and 2, Spring AGU Meeting, 2002, EOS Trans. AGU, 83(19), Spring Meet. Suppl, Abstract SH31B-05, 2002.

Lanzerotti, L. J., S. M. Krimigis, R. B. Decker, S. E. Hawkins, III, R. E. Gold, E. C. Roelof, T. P Armstrong, Low-Energy Particles in the Global Heliosphere 2001-2004: 1 to 90 AU, Space Sci. Rev., 243-248, 2001. Abstract, with link to full article.

Mauk, B. H., R. W. McEntire, D. J. Williams, A. Lagg, E. C. Roelof, S. M. Krimigis, T. P. Armstrong, T. A. Fritz, L. J. Lanzerotti, J. G. Roederer, and B. Wilken, Galileo-Measured Depletion of Near-Io Hot Ring Current Plasmas Since the Voyager Epoch, J. Geophys. Res., 103, 4715, 1998. Abstract, with link to full article.

Nikitin, A. V., R. L. Davidchack, and T. P. Armstrong, The Effect of Pulse Pile-up on Threshold Crossing Rates in a System with a Known Impulse Response, Nucl. Instr. Methods in Phys. Res., 411,159, 1998. Abstract, with link to full article.

Boufaida, M., and T. P. Armstrong, Spatial Variations of 0.2 to 5 MeV Protons in the 1-5 AU in-Ecliptic Region from Ulysses, Voyager 1 and 2, and IMP 8 Gradient Studies, J. Geophys. Res., 102, 7013, 1997. Abstract, with link to full article.

Lanzerotti, L. J., C. G. Maclennan, T. P. Armstrong, E. C. Roelof, R. E. Gold, and R. B. Decker, Low Energy Charged Particles in the High Latitude Heliosphere, Adv. Space Res., 19, 851, 1997. Abstract, with link to full article.

Roelof, E. C., G. M. Simnett, R. B. Decker, L. J. Lanzerotti, C. G. Maclennan, T. P. Armstrong, R. E. Gold, and S. M. Krimigis, Reappearance of Recurrent Low Energy Particle Events at Ulysses/HI-SCALE in the Northern Heliosphere, J. Geophys. Res., 102, 11,251, 1997. Abstract, with link to full article.

Roelof, E. C., R. B. Decker, R. E. Gold, G. M. Simnett, L. J. Lanzerotti, C. G. Maclennan, and T. P. Armstrong, Reappearance of Recurrent Low Energy Particle Events in the Northern Heliosphere: Ulysses, Voyager 1/2, and IMP8, Spring AGU Meeting, May 1997, 1997 Spring Meeting Supplement to EOS, S259, 1997. Abstract SH51B-05.

Decker, R. B., E. C. Roelof, R. E. Gold, G. M. Simnett, L. J. Lanzerotti, C. G. Maclennan, and T. P. Armstrong, Recurrent Low Energy Particle Events in the Northern Heliosphere: Ulysses, Voyager 1/2, and IMP8, Fall AGU Meeting, December 1996, 1996 Fall Meeting Supplement to EOS, F571, 1996. Abstract SH21C-07.

Lanzerotti, L. J., C. G. Maclennan, T. P. Armstrong, E. C. Roelof, R. E. Gold, and R. B Decker, Low Energy Charged Particles in the High Latitude Heliosphere, Astron. Astrophys., 316, 457, 1996.

Mauk, B. H., S. A. Gary, M. Kane, E. P. Keath, S. M. Krimigis and T. P. Armstrong, Hot Plasma Parameters of Jupiter's Inner Magnetosphere, J. Geophys. Res., 101, 7685, 1996. Abstract, with link to full article (on the AGU website); full article (on this Fundamental Technologies website as part of the LECP Data Analysis Handbook).

Armstrong, T. P., M. Boufaida, G. Giacalone, L. J. Lanzerotti, C. G. Maclennan, E. C. Roelof, G. M. Simnett, and K. A. Sayle, Evidence for Shock Acceleration to 2-4 MeV/Nucleon of Interstellar Helium in the 1-5 AU In-Ecliptic Region From Ulysses, Voyagers 1 and 2, and IMP8 Gradient Studies, Fall AGU Meeting, December 1995, 1995 Fall Meeting Supplement to EOS, F455, Abstract SH21A-19, 1995.

Lanzerotti, L. J., C. G. Maclennan, R. E. Gold, E. C. Roelof, S. M. Krimigis, T. P. Armstrong, M. Pick, E. T. Sarris, G. M. Simnett, K. A. Anderson, and R. P. Lin, Measurement of Heliolatitude Dependence of Anomalous Cosmic Ray Oxygen, Second Pioneer-Voyager Symposium on Energetic Particles and Fields in the Outer Heliosphere, UNH, 1994.

Boufaida, M., and T. P. Armstrong, Observations of 0.3 to 2.0 MeV Protons in the 1 to 5 AU Region With Voyager 1 and Ulysses Compared to IMP 8, Proceedings of the 23rd International Cosmic Ray Conference (July 19-30, 1993, Calgary, Canada), 3, 334-337, 1993.

Ye, G., and T. P. Armstrong, Electron Distributions in the Inner Jovian Magnetosphere: Voyager 1 Observations, J. Geophys. Res., 98, 21253, 1993. Abstract, with link to full article.

Armstrong, T. P., T. H. Choo, G. Ye, E. Sarris, L. J. Lanzerotti, S. M. Krimigis, and P. Chaizy, Ulysses and Voyager Observations of Energetic Electrons and Ions in the Outer Jovian Magnetosphere, Spring AGU Meeting, May 1992, 1992 Spring Meeting Supplement to EOS, 181, 1992. Abstract P41A-7.

Mauk, B. H., E. P. Keath, M. Kane, S. M. Krimigis, A. F. Cheng, M. H. Acuna, T. P. Armstrong, and N. F. Ness, The Magnetosphere of Neptune: Hot Plasmas and Energetic Particles, J. Geophys. Res., 96, 19061, 1991. Abstract, with link to full article.

Krimigis, S. M., B. H. Mauk, A. F. Cheng, E. P. Keath, M. Kane, T. P. Armstrong, G. Gloeckler, and L. J. Lanzerotti, Hot Plasma Parameters in Neptune's Magnetosphere, Geophys. Res. Lett., 17, 1685, 1990. Abstract, with link to full article.

Mauk, B. H., M. Kane, E. P. Keath, A. F. Cheng, S. M. Krimigis, T. P. Armstrong, and N. F. Ness, Energetic Charged Particle Angular Distributions Near (r ≤ 2 R_N) and Over the Pole of Neptune, Geophys. Res. Lett., 17, 1701, 1990. Abstract, with link to full article.

Krimigis, S. M., T. P. Armstrong, W. I. Axford, C. O. Bostrom, A. F. Cheng, G. Gloeckler, D. C. Hamilton, E. P. Keath, L. J. Lanzerotti, B. H. Mauk, and J. A. Van Allen, Hot Plasma and Energetic Particles in Neptune's Magnetosphere, Science, 246, 1483-1489, 1989. Abstract, with link to full article.

Cheng, A. F., S. M. Krimigis, B. H. Mauk, E. P. Keath, C. G. Maclennan, L. J. Lanzerotti, M. T. Paonessa, and T. P. Armstrong, Energetic Ion and Electron Phase Space Densities in the Magnetosphere of Uranus, J. Geophys. Res., 92, 15,315-15,328, 1987. Abstract, with link to full article.

Mauk, B. J., S. M. Krimigis, E. P. Keath, A. F. Cheng, T. P. Armstrong, L. J. Lanzerotti, G. Gloecker, and D. C. Hamilton, The Hot Plasma and Radiation Environment of the Uranian Magnetosphere, J. Geophys. Res., 92, 15,283-15,308, 1987. Abstract, with link to full article.

Khurana, K. K., M. G. Kivelson, R. J. Walker, and T. P. Armstrong, A New Interpretation of Plasma Dropouts in Voyager 2 Data Near Ganymede's Orbit, Fall AGU Meeting, December 1986, EOS, 67, 1171, 1986.

Krimigis, S. M., T. P. Armstrong, W. Ian Axford, Andrew F. Cheng, F. Gloeckler, D. Hamilton, E. P. Keath, L. J. Lanzerotti, and B. H. Mauk, The Magnetosphere of Uranus: Hot Plasma and Radiation Environment, Science, 233, 97-102, 1986. Abstract, with link to full article.

Armstrong, T. P., M. T. Paonessa, E. V. Bell II, and S. M. Krimigis, Voyager Observations of Saturnian Ion and Electron Phase Space Densities, J. Geophys. Res., 88, 8893-8904, 1983. Abstract, with link to full article.

Krimigis, S. M., J. F. Carbary, E. P. Keath, T. P. Armstrong, L. J. Lanzerotti, and G. Gloeckler, General Characteristics of Hot Plasma and Energetic Particles in the Saturnian Magnetosphere: Results from the Voyager Spacecraft, J. Geophys. Res., 88, 8871-8892, 1983. Abstract, with link to complete article.

Tariq, G. F., T. P. Armstrong, and T. H. Collison, Voyager 2 Observations of Energetic Particle Variations in the Ganymede Wake Region: A Possible Acceleration Mechanism, J. Geophys. Res., 88, 5551-5563, 1983. Abstract, with link to full article.

Krimigis, S. M., and T. P. Armstrong, Observations of Low Energy Ions Inside the Orbit of Mimas by Voyager-2, Spring AGU Meeting, May 31-June 4, 1982, EOS, 63, 411, 1982.

Armstrong, T. P., M. T. Paonessa, S. T. Brandon, S. M. Krimigis, and L. J. Lanzerotti, Low Energy Charged Particle Observations in the 5-20 Rj Region of the Jovian Magnetosphere, J. Geophys. Res., 86, 8343-8356, 1981. Abstract, with link to full article.

Armstrong, T. P., and T. H. Collison, Voyager Observations of Possible Ion Acceleration Near Ganymede, Spring AGU Meeting, May 1981, EOS, 62, 374, 1981.

Krimigis, S. M., T. P. Armstrong, W. I. Axford, C. O. Bostrom, G. Gloeckler, E. P. Keath, L. J. Lanzerotti, J. F. Carbary, D. C. Hamilton, and E. C. Roelof, Low Energy Charged Particles in Saturn's Magnetosphere: Results from Voyager 1, Science, 212, 225-231, 1981. Abstract, with link to full article.

Krimigis, S. M., J. F. Carbary, E. P. Keath, C. O. Bostrom, W. I. Axford, G. Gloeckler, L. J. Lanzerotti, and T. P. Armstrong, Characteristics of Hot Plasma in the Jovian Magnetosphere: Results from the Voyager Spacecraft, J. Geophys. Res., 86, 8227-8258, 1981. Abstract, with link to full article.

Paonessa, M. T., and T. P. Armstrong, Voyager Observations of Phase Space Densities of Various Species in the Magnetosphere of Saturn, Spring AGU Meeting, May 1981, EOS, 62, 372, 1981.

Zwickl, R. D., S. M. Krimigis, J. F. Carbary, E. P. Keath, T. P. Armstrong, D. C. Hamilton, and G. Gloeckler, Energetic Particle Events of Jovian Origin Observed by Voyager 1 and 2 in Interplanetary Space, J. Geophys. Res., 86, 8125-8140, 1981. Abstract, with link to full article.

Armstrong, T. P. (representing the LECP Team), A Comparison of Low Energy, >~30 keV, Electron and Ion Fluxes in the Jovian Magnetosphere from Voyagers 1 and 2, Spring AGU Meeting, May 1980, EOS, 61, 348, 1980.

Burlaga, L., R. Lepping, R. Weber, T. Armstrong, C. Goodrich, J. Sullivan, D. Gurnett, P. Kellogg, E. Keppler, F. Mariani, F. Neubauer, and R. Schwenn, Interplanetary Particles and Fields, November 22-December 6, 1977: Helios, Voyager, and IMP Observations between 0.6 and 1.6 AU, J. Geophys. Res., 85, 2227-2242, 1980. Abstract, with link to full article.

Collison, T. H., and T. P. Armstrong (representing the LECP Team), Energetic Ion Flux Disturbances in the Ganymede Wake Region, Fall AGU Meeting, December 1980, EOS, 61, 1093, 1980.

Hamilton, D. C., G. Gloeckler, C. O. Bostrom, T. P. Armstrong, W. I. Axford, C. Y. Fan, L. J. Lanzerotti, and D. M. Hunten, Detection of Energetic Hydrogen Molecules in Jupiter's Magnetosphere by Voyager 2: Evidence for an Ionospheric Plasma Source, Geophys. Res. Lett., 7, 813-816, 1980. Abstract, with link to full article.

Krimigis, S. M., J. F. Carbary, E. P. Keath, L. J. Lanzerotti, T. P. Armstrong, and G. Gloeckler, Hot Plasma Density Measurements in the Jovian Magnetosphere with Voyagers 1 and 2, Spring AGU Meeting, May 1980, EOS, 61, 348, 1980.

Zwickl, R. D., S. M. Krimigis, T. P. Armstrong and L. J. Lanzerotti, Ions of Jovian Origin Observed by Voyager 1 and 2 in Interplanetary Space, Geophys. Res. Lett., 7, 453-456, 1980. Abstract, with link to full article.

Hamilton, D. C., G. Gloeckler, S. M. Krimigis, C. O. Bostrom, T. P. Armstrong, W. I. Axford, C. Y. Fan, and L. J. Lanzerotti, Voyager 1 Measurements of the Elemental Composition of Energetic Particles in Upstream Jovian Bursts, 1979 Spring AGU Meeting, EOS, 60, 354, 1979.

Krimigis, S. M., T. P. Armstrong, W. I. Axford, C. O. Bostrom, C. Y. Fan, G. Gloeckler, L. J. Lanzerotti, E. P. Keath, R. D. Zwickl, J. F. Carbary, and D. C. Hamilton, Low Energy Charged Particle Environment at Jupiter: A First Look, Science, 204, 998-1003, 1979. Abstract, with link to full article.

Krimigis, S. M., C. O. Bostrom, T. P. Armstrong, W. I. Axford, G. Gloeckler, C. Y. Fan, and L. J. Lanzerotti, Measurements of Energetic Particles in the Jovian Magnetosphere with Voyager-1, American Physical Society Meeting, April 1979, Bul. Am. Phys. Soc., 24, 660, 1979.

Krimigis, S. M., R. D. Zwickl, L. J. Lanzerotti, and T. P. Armstrong, Monoenergetic, Heavy Ion Plasma Beam Observed Near Jovian Magnetosphere Boundary by Voyager-2, Fall AGU Meeting, December 1979, EOS, 60, 922, 1979.

Krimigis, S. M., T. P. Armstrong, W. I. Axford, C. O. Bostrom, C. Y. Fan, G. Gloeckler, L. J. Lanzerotti, E. P. Keath, R. D. Zwickl, J. F. Carbary, and D. C. Hamilton, Hot Plasma Environment at Jupiter: Voyager 2 Results, Science, 206, 977-984, 1979. Abstract, with link to full article.

Zwickl, R. D., S. M. Krimigis, C. O. Bostrom, E. C. Roelof, E. P. Keath, and T. P. Armstrong, Energetic Particle Events from 1 to >4 AU as Observed by Voyager 1 and 2, American Physical Society Meeting, April 1979, Bul. Am. Phys. Soc., 24, 658, 1979.

Armstrong, T. P., Chemical Composition of Solar Flare Ions Measured with Voyager II, Ninth Annual Mid-American Regional Astrophysics Conference, Kansas City, Missouri, April 14-15, 1978.

Armstrong, T. P., W. I. Axford, C. O. Bostrom, C. Y. Fan, G. Gloeckler, S. M. Krimigis, and L. J. Lanzerotti, Observations of Rapid Interplanetary Charged Particle Intensity Variations with Voyagers 1 and 2, Spring AGU Meeting, April 1978, EOS, 59, 347, 1978.

Briggs, P. R., and T. P. Armstrong, Voyager and IMP Observations of a Z>2 - Rich Interplanetary Particle Enhancement, Fall AGU Meeting, December 1978, EOS, 59, 1151, 1978.

Krimigis, S. M., T. P. Armstrong, W. I. Axford, C. O. Bostrom, C. Y. Fan, G. Gloeckler, and L. J. Lanzerotti, The Low Energy Charged Particle (LECP) Experiment on the Voyager Spacecraft, Space Science Reviews, 21, 329-354, 1977.

Roelof, E. C., S. M. Krimigis, T. P. Armstrong, L. J. Lanzerotti, and G. Gloeckler, Voyager Observations of the Solar Flare Particle Events September 8-24, 1977: Coronal and Interplanetary Propagation, COSPAR, Innsbruck, Austria, June 5-10, 1978.

Roelof, E. C., S. M. Krimigis (representing the LECP Team), and T. P. Armstrong, Voyager Observations of the Solar Flare Particle Events September 8-24, 1977: Coronal and Interplanetary Propagation, Spring AGU Meeting, April 1978, EOS, 59, 347, 1978.