All Stories

  1. Beam tracking strategies for fast acquisition of solar wind velocity distribution functions with high energy and angular resolutions

    Article • Annales Geophysicae, October 2018, Copernicus GmbH

    Johan De Keyser

  2. On the origin of molecular oxygen in cometary comae

    Article • Nature Communications, July 2018, Springer Science + Business Media

    Johan De Keyser

  3. Non-resonant Alfvénic instability activated by high temperature of ion beams in compensated-current astrophysical plasmas

    Article • Astronomy and Astrophysics, July 2018, EDP Sciences

    Johan De Keyser

  4. Krypton isotopes and noble gas abundances in the coma of comet 67P/Churyumov-Gerasimenko

    Article • Science Advances, July 2018, American Association for the Advancement of Science

    Johan De Keyser

  5. Beam tracking strategies for fast acquisition of solar wind velocity distribution functions with high energy and angular resolutions

    Article • Annales Geophysicae Discussions, June 2018, Copernicus GmbH

    Johan De Keyser

  6. Why an intrinsic magnetic field does not protect a planet against atmospheric escape

    Article • Astronomy and Astrophysics, June 2018, EDP Sciences

    Johan De Keyser

  7. Nonlinear Decay of Alfvén Waves Driven by Interplaying Two- and Three-dimensional Nonlinear Interactions

    Article • The Astrophysical Journal, April 2018, American Astronomical Society

    Johan De Keyser

  8. The detection of ultra-relativistic electrons in low Earth orbit

    Article • Journal of Space Weather and Space Climate, January 2018, EDP Sciences

    Johan De Keyser

  9. Solar Illumination Control of the Polar Wind

    Article • Journal of Geophysical Research Space Physics, November 2017, Wiley

    Johan De Keyser

  10. The Delayed Time Response of Geomagnetic Activity to the Solar Wind

    Article • Journal of Geophysical Research Space Physics, November 2017, Wiley

    Johan De Keyser

  11. Dawn-Dusk Asymmetries at the Terrestrial Magnetopause

    Article • October 2017, Wiley

    Johan De Keyser

  12. Magnetopause Thickness at the Dawn and Dusk Flanks

    Article • October 2017, Wiley

    Johan De Keyser

  13. Halogens as tracers of protosolar nebula material in comet 67P/Churyumov–Gerasimenko

    Article • Monthly Notices of the Royal Astronomical Society, August 2017, Oxford University Press (OUP)

    Johan De Keyser

  14. Use of a Langmuir Probe Instrument on Board a Pico-Satellite

    Article • IEEE Transactions on Plasma Science, August 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Johan De Keyser

  15. Evidence for distributed gas sources of hydrogen halides in the coma of comet 67P/Churyumov–Gerasimenko

    Article • Monthly Notices of the Royal Astronomical Society, July 2017, Oxford University Press (OUP)

    Johan De Keyser

  16. Sulphur isotope mass-independent fractionation observed in comet 67P/Churyumov–Gerasimenko by Rosetta/ROSINA

    Article • Monthly Notices of the Royal Astronomical Society, July 2017, Oxford University Press (OUP)

    Johan De Keyser

  17. Change of outgassing pattern of 67P/Churyumov–Gerasimenko during the March 2016 equinox as seen by ROSINA

    Article • Monthly Notices of the Royal Astronomical Society, June 2017, Oxford University Press (OUP)

    Johan De Keyser

  18. Plasma waves confined to the diamagnetic cavity of comet 67P/Churyumov–Gerasimenko

    Article • Monthly Notices of the Royal Astronomical Society, May 2017, Oxford University Press (OUP)

    Johan De Keyser

  19. Impact of Radiogenic Heating on the Formation Conditions of Comet 67P/Churyumov–Gerasimenko

    Article • The Astrophysical Journal Letters, April 2017, American Astronomical Society

    Johan De Keyser

  20. Electrostatic analyzer design for solar wind proton measurements with high temporal, energy, and angular resolutions

    Article • Journal of Geophysical Research Space Physics, February 2017, American Geophysical Union (AGU)

    antoine CARA, Johan De Keyser

  21. Multi-instrument observations of the solar eclipse on 20 March 2015 and its effects on the ionosphere over Belgium and Europe

    Article • Journal of Space Weather and Space Climate, January 2017, EDP Sciences

    Johan De Keyser, Dr Frédéric Clette

  22. Differential kinetic dynamics and heating of ions in the turbulent solar wind

    Article • New Journal of Physics, December 2016, Institute of Physics Publishing

    Johan De Keyser

  23. MHD–KINETIC TRANSITION IN IMBALANCED ALFVÉNIC TURBULENCE

    Article • The Astrophysical Journal Letters, November 2016, American Astronomical Society

    Johan De Keyser

  24. Seasonal variations and north–south asymmetries in polar wind outflow due to solar illumination

    Article • Annales Geophysicae, November 2016, Copernicus GmbH

    Johan De Keyser

  25. Mass spectrometric characterization of the Rosetta Spacecraft contamination with ROSINA

    Article • September 2016, SPIE

    Johan De Keyser

  26. 2D photochemical model for forbidden oxygen line emission for comet 1P/Halley

    Article • Monthly Notices of the Royal Astronomical Society, August 2016, Oxford University Press (OUP)

    Johan De Keyser

  27. Prebiotic chemicals--amino acid and phosphorus--in the coma of comet 67P/Churyumov-Gerasimenko

    Article • Science Advances, May 2016, American Association for the Advancement of Science

    Prof. Kathrin Altwegg, Johan De Keyser

  28. Can the downward current region of the aurora be simulated in the laboratory?

    Article • Plasma Physics and Controlled Fusion, April 2016, Institute of Physics Publishing

    Johan De Keyser

  29. Photochemistry of forbidden oxygen lines in the inner coma of 67P/Churyumov-Gerasimenko

    Article • Journal of Geophysical Research Space Physics, January 2016, Wiley

    Johan De Keyser

  30. Acceleration of ions and nano dust at a comet in the solar wind

    Article • Planetary and Space Science, December 2015, Elsevier

    Johan De Keyser

  31. Correcting peak deformation in Rosetta's ROSINA/DFMS mass spectrometer

    Article • International Journal of Mass Spectrometry, December 2015, Elsevier

    Johan De Keyser

  32. Solar wind sputtering of dust on the surface of 67P/Churyumov-Gerasimenko

    Article • Astronomy and Astrophysics, October 2015, EDP Sciences

    Johan De Keyser

  33. Comparison of 3D kinetic and hydrodynamic models to ROSINA-COPS measurements of the neutral coma of 67P/Churyumov-Gerasimenko

    Article • Astronomy and Astrophysics, October 2015, EDP Sciences

    Johan De Keyser

  34. Inventory of the volatiles on comet 67P/Churyumov-Gerasimenko from Rosetta/ROSINA

    Article • Astronomy and Astrophysics, October 2015, EDP Sciences

    Johan De Keyser

  35. Self-consistent electrostatic simulations of reforming double layers in the downward current region of the aurora

    Article • Annales Geophysicae, October 2015, Copernicus GmbH

    Johan De Keyser

  36. Abundant molecular oxygen in the coma of comet 67P/Churyumov–Gerasimenko

    Article • Nature, October 2015, Springer Science + Business Media

    Johan De Keyser

  37. Detection of argon in the coma of comet 67P/Churyumov-Gerasimenko

    Article • Science Advances, September 2015, American Association for the Advancement of Science

    Johan De Keyser

  38. Instrumentation of the Belgian RAdio Meteor Stations (BRAMS)

    Article • September 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Johan De Keyser

  39. Compensated-current instability of kinetic Alfvén waves

    Article • Monthly Notices of the Royal Astronomical Society, August 2015, Oxford University Press (OUP)

    Johan De Keyser

  40. Solar illumination control of ionospheric outflow above polar cap arcs

    Article • Geophysical Research Letters, March 2015, Wiley

    Johan De Keyser

  41. Vlasov simulations of trapping and loss of auroral electrons

    Article • Annales Geophysicae, March 2015, Copernicus GmbH

    Johan De Keyser

  42. SCALAR AND VECTOR NONLINEAR DECAYS OF LOW-FREQUENCY ALFVÉN WAVES

    Article • The Astrophysical Journal, January 2015, Institute of Physics Publishing

    Johan De Keyser

  43. Characteristics of the flank magnetopause: Cluster observations

    Article • Journal of Geophysical Research Space Physics, November 2014, American Geophysical Union (AGU)

    Johan De Keyser

  44. Waves in high-speed plasmoids in the magnetosheath and at the magnetopause

    Article • Annales Geophysicae, August 2014, Copernicus GmbH

    Johan De Keyser

  45. Electrostatic plasma instabilities driven by neutral gas flows in the solar chromosphere

    Article • Monthly Notices of the Royal Astronomical Society, January 2014, Oxford University Press (OUP)

    Johan De Keyser

  46. OBLIQUE ALFVÉN INSTABILITIES DRIVEN BY COMPENSATED CURRENTS

    Article • The Astrophysical Journal, December 2013, Institute of Physics Publishing

    Johan De Keyser

  47. Numerical and laboratory simulations of auroral acceleration

    Article • Physics of Plasmas, October 2013, American Institute of Physics

    Johan De Keyser

  48. Cross-field flow and electric potential in a plasma slab

    Article • Annales Geophysicae, August 2013, Copernicus GmbH

    Johan De Keyser

  49. ROSINA/DFMS capabilities to measure isotopic ratios in water at comet 67P/Churyumov–Gerasimenko

    Article • Planetary and Space Science, August 2013, Elsevier

    Johan De Keyser

  50. Vlasov simulations of parallel potential drops

    Article • Annales Geophysicae, July 2013, Copernicus GmbH

    Johan De Keyser

  51. Links between the plasmapause and the radiation belt boundaries as observed by the instruments CIS, RAPID, and WHISPER onboard Cluster

    Article • Journal of Geophysical Research Space Physics, July 2013, American Geophysical Union (AGU)

    Johan De Keyser

  52. The dynamics of the plasmasphere: Recent results

    Article • Journal of Atmospheric and Solar-Terrestrial Physics, July 2013, Elsevier

    Johan De Keyser

  53. Electric potential differences across auroral generator interfaces

    Article • Annales Geophysicae, February 2013, Copernicus GmbH

    Johan De Keyser

  54. From meteorites to evolution and habitability of planets

    Article • Planetary and Space Science, November 2012, Elsevier

    Johan De Keyser

  55. In situ mass spectrometry during the Lutetia flyby

    Article • Planetary and Space Science, June 2012, Elsevier

    Johan De Keyser

  56. Turbulent spectra and spectral kinks in the transition range from MHD to kinetic Alfvén turbulence

    Article • Nonlinear Processes in Geophysics, September 2011, Copernicus GmbH

    Johan De Keyser

  57. Spacecraft outgassing, a largely underestimated phenomenon

    Article • September 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Johan De Keyser

  58. BRAMS: The Belgian RAdio Meteor Stations

    Article • August 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Johan De Keyser

  59. Comparative investigation of the terrestrial and Venusian magnetopause: Kinetic modeling and experimental observations by Cluster and Venus Express

    Article • Planetary and Space Science, August 2011, Elsevier

    Johan De Keyser

  60. EIDOSCOPE: particle acceleration at plasma boundaries

    Article • Experimental Astronomy, July 2011, Springer Science + Business Media

    Johan De Keyser

  61. Characterization of the gaseous spacecraft environment of Rosetta by ROSINA

    Article • June 2011, American Institute of Aeronautics and Astronautics (AIAA)

    Johan De Keyser

  62. Wave signatures and electrostatic phenomena above aurora: Cluster observations and modeling

    Article • Journal of Geophysical Research Atmospheres, June 2011, American Geophysical Union (AGU)

    Johan De Keyser

  63. Polar cap ion beams during periods of northward IMF: Cluster statistical results

    Article • Annales Geophysicae, May 2011, Copernicus GmbH

    Johan De Keyser

  64. Influence of spacecraft outgassing on the exploration of tenuous atmospheres with in situ mass spectrometry

    Article • Journal of Geophysical Research Atmospheres, December 2010, American Geophysical Union (AGU)

    Johan De Keyser

  65. Monopolar and bipolar auroral electric fields and their effects

    Article • Annales Geophysicae, November 2010, Copernicus GmbH

    Johan De Keyser

  66. Auroral and sub-auroral phenomena: an electrostatic picture

    Article • Annales Geophysicae, February 2010, Copernicus GmbH

    Johan De Keyser

  67. Flexible Tools for Accessing the Cluster Archives

    Article • October 2009, Springer Science + Business Media

    Johan De Keyser

  68. A magnetospheric generator driving ion and electron acceleration and electric currents in a discrete auroral arc observed by Cluster and DMSP

    Article • Geophysical Research Letters, June 2009, American Geophysical Union (AGU)

    Johan De Keyser

  69. Foreword

    Article • Space Science Reviews, May 2009, Springer Science + Business Media

    Johan De Keyser

  70. Electric Fields and Magnetic Fields in the Plasmasphere: A Perspective From CLUSTER and IMAGE

    Article • Space Science Reviews, January 2009, Springer Science + Business Media

    Johan De Keyser

  71. CLUSTER and IMAGE: New Ways to Study the Earth’s Plasmasphere

    Article • Space Science Reviews, January 2009, Springer Science + Business Media

    Johan De Keyser

  72. CLUSTER and IMAGE: New Ways to Study the Earth’s Plasmasphere

    Article • January 2009, Springer Science + Business Media

    Johan De Keyser

  73. Foreword

    Article • January 2009, Springer Science + Business Media

    Johan De Keyser

  74. The Earth’s Plasmasphere

    Article • January 2009, Springer Science + Business Media

    Dr Fabien Darrouzet, Johan De Keyser

  75. Plasmaspheric Density Structures and Dynamics: Properties Observed by the CLUSTER and IMAGE Missions

    Article • January 2009, Springer Science + Business Media

    Dr Fabien Darrouzet, Johan De Keyser

  76. Electric Fields and Magnetic Fields in the Plasmasphere: A Perspective from CLUSTER and IMAGE

    Article • January 2009, Springer Science + Business Media

    Johan De Keyser

  77. Statistical analysis of plasmaspheric plumes with Cluster/WHISPER observations

    Article • Annales Geophysicae, August 2008, Copernicus GmbH

    Johan De Keyser

  78. Ionospheric feedback effects on the quasi-stationary coupling between LLBL and postnoon/evening discrete auroral arcs

    Article • Annales Geophysicae, May 2008, Copernicus GmbH

    Johan De Keyser

  79. A new perspective on the Earth's plasmasphere

    Article • Eos, November 2007, American Geophysical Union (AGU)

    Johan De Keyser

  80. Comets and Chemical Composition

    Article • Space Science Reviews, June 2007, Springer Science + Business Media

    Johan De Keyser

  81. Least-squares gradient calculation from multi-point observations of scalar and vector fields: methodology and applications with Cluster in the plasmasphere

    Article • Annales Geophysicae, May 2007, Copernicus GmbH

    Johan De Keyser

  82. Sheared magnetospheric plasma flows and discrete auroral arcs: a quasi-static coupling model

    Article • Annales Geophysicae, February 2007, Copernicus GmbH

    Johan De Keyser

  83. Analysis of plasmaspheric plumes: CLUSTER and IMAGE observations

    Article • Annales Geophysicae, July 2006, Copernicus GmbH

    Johan De Keyser

  84. Spatial gradients in the plasmasphere from Cluster

    Article • Geophysical Research Letters, January 2006, Wiley

    Johan De Keyser

  85. The Earth’s Magnetopause: Reconstruction of Motion and Structure

    Article • Space Science Reviews, November 2005, Springer Science + Business Media

    Johan De Keyser

  86. Empirical reconstruction and long-duration tracking of the magnetospheric boundary in single- and multi-spacecraft contexts

    Article • Annales Geophysicae, June 2005, Copernicus GmbH

    Johan De Keyser

  87. Density structures inside the plasmasphere: Cluster observations

    Article • Annales Geophysicae, July 2004, Copernicus GmbH

    Johan De Keyser

  88. Reconstruction of the magnetopause and low-latitude boundary layer topology using Cluster multi-point measurements

    Article • Annales Geophysicae, July 2004, Copernicus GmbH

    Johan De Keyser

  89. Structural analysis of periodic surface waves on the magnetospheric boundary

    Article • Planetary and Space Science, October 2003, Elsevier

    Johan De Keyser

  90. Resonant phenomena of hydromagnetic waves in non-uniform space plasmas

    Article • Plasma Sources Science and Technology, August 2002, Institute of Physics Publishing

    Johan De Keyser

  91. Trying to bring the magnetopause to a standstill

    Article • Geophysical Research Letters, May 2002, American Geophysical Union (AGU)

    Johan De Keyser

  92. Excitation of low-frequency fluctuations at the magnetopause by intermittent broadband magnetosheath waves

    Article • Journal of Geophysical Research Atmospheres, December 2001, American Geophysical Union (AGU)

    Johan De Keyser

  93. Transients at the dusk side magnetospheric boundary: Surface waves or isolated plasma blobs?

    Article • Journal of Geophysical Research Atmospheres, November 2001, American Geophysical Union (AGU)

    Johan De Keyser

  94. Transient development of magnetohydrodynamic wave mode conversion layers

    Article • Journal of Geophysical Research Atmospheres, August 2001, American Geophysical Union (AGU)

    Johan De Keyser

  95. A Survey of Field-Aligned Mach Number and Plasma Beta in the Solar Wind

    Article • January 2001, Springer Science + Business Media

    Johan De Keyser

  96. Ulysses observations of sector boundaries at aphelion

    Article • Journal of Geophysical Research Atmospheres, July 2000, American Geophysical Union (AGU)

    Johan De Keyser

  97. Magnetohydrodynamic wave mode conversion at the Earth’s magnetopause

    Article • January 2000, American Institute of Physics

    Johan De Keyser

  98. Resonant amplification of MHD waves in realistic subsolar magnetopause configurations

    Article • Journal of Geophysical Research Atmospheres, February 1999, American Geophysical Union (AGU)

    Johan De Keyser

  99. Flow shear across solar wind discontinuities: WIND observations

    Article • Geophysical Research Letters, July 1998, American Geophysical Union (AGU)

    Johan De Keyser

  100. The magnetospheric driver of subauroral ion drifts

    Article • Geophysical Research Letters, May 1998, American Geophysical Union (AGU)

    Johan De Keyser

  101. Equilibrium conditions and magnetic field rotation at the tangential discontinuity magnetopause

    Article • Journal of Geophysical Research Atmospheres, April 1998, Wiley

    Johan De Keyser

  102. Electron density at the subsolar magnetopause for high magnetic shear: ISEE 1 and 2 observations

    Article • Journal of Geophysical Research Atmospheres, April 1998, Wiley

    Johan De Keyser

  103. Magnetic field rotation at the dayside magnetopause: AMPTE/IRM observations

    Article • Journal of Geophysical Research Atmospheres, April 1998, Wiley

    Johan De Keyser

  104. High altitude electrostatic fields driving subauroral ion drifts

    Article • January 1998, Elsevier

    Johan De Keyser

  105. Correction to “Equilibrium conditions for the tangential discontinuity magnetopause” by J. De Keyser and M. Roth

    Article • Journal of Geophysical Research Atmospheres, September 1997, American Geophysical Union (AGU)

    Johan De Keyser

  106. Equilibrium conditions for the tangential discontinuity magnetopause

    Article • Journal of Geophysical Research Atmospheres, May 1997, American Geophysical Union (AGU)

    Johan De Keyser

  107. Theoretical plasma distributions consistent with Ulysses magnetic field observations in a solar wind tangential discontinuity

    Article • Solar Physics, July 1996, Springer Science + Business Media

    Johan De Keyser

  108. Vlasov theory of the equilibrium structure of tangential discontinuities in space plasmas

    Article • Space Science Reviews, May 1996, Springer Science + Business Media

    Johan De Keyser

  109. Run-time load balancing techniques for a parallel unstructured multi-grid Euler solver with adaptive grid refinement

    Article • Parallel Computing, February 1995, Elsevier

    Johan De Keyser

  110. A parallel block-structured euler/navier-stokes code with adaptive refinement and run-time load balancing on the iPSC/860

    Article • January 1995, Elsevier

    Johan De Keyser

  111. Run-time load balancing support for a parallel multiblock Euler/Navier-Stokes code with adaptive refinement on distributed memory computers

    Article • Parallel Computing, August 1994, Elsevier

    Johan De Keyser

  112. Distributed mapping of SPMD programs with a generalized Kernighan-Lin heuristic

    Article • January 1994, Springer Science + Business Media

    Johan De Keyser

  113. Parallel Steady Euler Calculations using Multigrid Methods and Adaptive Irregular Meshes

    Article • January 1994, Springer Science + Business Media

    Johan De Keyser

  114. A parallel multiblock Euler/Navier-Stokes solver on a cluster of workstations using PVM

    Article • January 1994, Springer Science + Business Media

    Johan De Keyser

  115. Parallel Steady Euler Calculations Using Multigrid Methods and Adaptive Irregular Meshes

    Article • January 1994, Springer Science + Business Media

    Johan De Keyser

  116. Load balancing data parallel programs on distributed memory computers

    Article • Parallel Computing, November 1993, Elsevier

    Johan De Keyser

  117. Load Balancing Grid-Oriented Applications on Distributed Memory Parallel Computers

    Article • January 1992, Springer Science + Business Media

    Johan De Keyser

  118. Adaptive irregular multiple grids on a distributed memory multiprocessor

    Article • January 1991, Springer Science + Business Media

    Johan De Keyser

  119. The Numerical Solution of Elliptic Partial Differential Equations on a Hypercube Multiprocessor

    Article • January 1989, Springer Science + Business Media

    Johan De Keyser

  120. A Software Tool for Load Balanced Adaptive Multiple Grids on Distributed Memory Computers

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Johan De Keyser

  121. Incremental mapping for solution-adaptive multigrid hierarchies

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Johan De Keyser