List of publications of Pekka Janhunen

This page can be accessed at http://www.space.fmi.fi/~pjanhune/papers/

Refereed journals

  1. Janhunen, P., Magnetically dominated plasma models of ball lightning, Ann. Geophys., 9, 377-380, 1991.
  2. Janhunen, P. and A. Viljanen, Application of conformal mapping to 2-D conductivity structures with non-uniform primary sources, Geophys. J. Int., 105, 185-190, 1991.
  3. Janhunen, P., Propagationg of the electromagnetic signal from lightning over a non-planar inhomogeneous Earth, J. Atmos. Terr. Phys., 54, 251-264, 1992.
  4. Janhunen, P., A three-dimensional stabilization mechanism for the auroral Farley-Buneman instability, J. Atmos. Terr. Phys., 54, 1633-1643, 1992.
  5. Janhunen, P. and A. Huuskonen, A numerical ionosphere-magnetosphere coupling model with variable conductivities, J. Geophys. Res., 90, 9519-9530, 1993.
  6. Janhunen, P., Perpendicular particle simulation of the E-region Farley-Buneman instability, J. Geophys. Res., 99, 11461-11473, 1994.
  7. Janhunen, P., Implications of flow angle stabilization on coherent E-region spectra, J. Geophys. Res., 99, 13203-13208, 1994.
  8. Janhunen, P., On recent developments in E-region irregularity simulations and a summary of related theory, Ann. Geophys., 13, 791-806, 1995.
  9. Kauristie, K., T.I. Pulkkinen, R.J. Pellinen, P. Janhunen, A. Huuskonen, A. Viljanen, H.J. Opgenoorth, W.J. Heikkila and D.N. Baker, Analysis of the substorm trigger phase using multiple ground-based instrumentation, Geophys. Res. Lett, 22, 2065-2068, 1995.
  10. Janhunen, P., T.I. Pulkkinen and K. Kauristie, Auroral fading in ionosphere-magnetosphere coupling model: Implications for possible mechanisms, Geophys. Res. Lett., 22, 2049-2052, 1995.
  11. Olsson, A., A.I. Eriksson and P. Janhunen, On the current-voltage relationship in auroral breakups and westward traveling surges, Ann. Geophys., 14, 1265-1273, 1996.
  12. Janhunen, P., and H.E.J. Koskinen, The closure of Region-1 field-aligned current in MHD simulation, Geophys. Res. Lett., 24, 1419-1422, 1997.
  13. Laakso, H., N.C. Maynard, R.F. Pfaff, T.L. Aggson, W.R. Coley, P. Janhunen and F.A. Herrero, Electric field diagnostics of the dynamics of equatorial density depletions, J. Atmos. Sol. Terr. Phys., 59, 1625-1631, 1997.
  14. Janhunen, P. and A. Olsson, The current-voltage relationship revisited: exact and approximate formulas with almost general validity for hot magnetospheric electrons for bi-Maxwellian and kappa distributions, Ann. Geophys., 16, 292-297, 1998.
  15. Olsson, A. and P. Janhunen, Field-aligned conductance values estimated from Maxwellian and kappa distributions in quiet and disturbed events using Freja electron data, Ann. Geophys., 16, 298-302, 1998.
  16. Janhunen, P.,On the possibility of using an electromagnetic ionosphere in global MHD simulations, Ann. Geophys., 16, 397-402, 1998.
  17. Olsson, A. and P. Janhunen, A case study of electron precipitation in the late substorm growth phase on an nearby of a preonset arc, Ann. Geophys., 16, 1567-1572, 1998.
  18. Janhunen, P., On the current-voltage relationship in fluid theory, Ann Geophys., 17, 11-26, 1999.
  19. Nielsen, E., M. Bruns, I. Pardowitz, H. Perplies, L Bemmann, P. Janhunen and A. Huuskonen, STARE: Observations of a field-aligned line current, Geophys. Res. Lett., 26, 21, 1999.
  20. Janhunen, P., A. Olsson F.S. Mozer and H. Laakso, How does the U-shaped potential close above the acceleration region? A study using Polar data, Ann. Geophys., 17, 1276-1283, 1999.
  21. Janhunen, P., A. Olsson, O. Amm and K. Kauristie,Characteristics of a stable arc based on FAST and MIRACLE observations, Ann. Geophys. 18, 152-160, 2000.
  22. Olsson, A. and P. Janhunen, A statistical study of nightside inverted-V events using Freja electron data: Implications for the current-voltage relationship, J. Atmos. S. Terr. Phys., 62, 81-92, 2000.
  23. Olsson, A. and P. Janhunen, Difference in the current-voltage relationships between dawn and duskside inverted-V events, J. Geophys. Res., 105, 5373-5380, 2000.
  24. Janhunen, P., A positive conservative method for magnetohydrodynamics based on HLL and Roe methods, J. Comp. Phys, 160, 649-661, 2000.
  25. Janhunen, P. and A. Olsson, New model for auroral acceleration: O-shaped potential structure cooperating with waves, Ann. Geophys., 18, 596-607, 2000.
  26. Janhunen, P. and A. Olsson, Auroral potential structures and current-voltage relationship: Summary of recent results, Phys. Chem. Earth, 26, 107-111, 2001.
  27. Kallio, E. and P. Janhunen, Atmospheric effects of proton precipitation in the Martian atmosphere and its connection to Mars-solar wind interaction, J. Geophys. Res., 106, 5617-5634, 2001.
  28. Janhunen, P., Reconstruction of electron precipitation characteristics from a set of multiwavelength digital all-sky auroral images, J. Geophys. Res., 106, 18505-18516, 2001.
  29. Janhunen, P., A. Olsson, W.K. Peterson, H. Laakso, J.S. Pickett, T.I. Pulkkinen and C.T. Russell, A study of inverted-V auroral acceleration mechanisms using Polar/FAST conjunctions, J. Geophys. Res., 106, 18995-19011, 2001.
  30. Janhunen, P.,, A. Olsson, and H. Laakso, Altitude extension of auroral potential structures by event-based and statistical studies, Adv. Space Res., 28, 1575-1580, 2001.
  31. Janhunen, P., and M. Palmroth, Some observational phenomena are well reproduced by our global MHD while others are not: Remarks on what, why and how, Adv. Space Res., 28, 1685-1691, 2001.
  32. Kauristie, K., T.I. Pulkkinen, O. Amm, A. Viljanen, M. Syrjäsuo, P. Janhunen, S. Massetti, S. Orsini, M. Candidi, J. Watermann, E. Donovan, P. Prikryl, I.R. Mann, P. Eglitis, C. Smith, W.F. Denig, H.J. Opgenoorth, M. Lockwood, M. Dunlop, A. Vaivads, and M. Andre, Ground-based and satellite observations of high-latitude auroral activity in the dusk sector of the auroral oval, Ann. Geophys., 19, 1683-1696, 2001.
  33. O. Amm, P. Janhunen, K. Kauristie, H.J. Opgenoorth, T.I. Pulkkinen, and A. Viljanen, Mesoscale ionospheric electrodynamics observed with the MIRACLE network: 1. Analysis of a pseudobreakup spiral, J. Geophys. Res., 106, 24675-24690, 2001.
  34. Palmroth, M., Janhunen, P., Pulkkinen, T.I., and Peterson, W.K., Cusp and magnetopause locations in global MHD simulation, J. Geophys. Res., 106, 29435-29450, 2001.
  35. Kallio, E., and P. Janhunen, Ion escape from Mars in a quasineutral hybrid model, J. Geophys. Res., 107, 10.1029, 2002.
  36. Koustov, A.V., D.W. Danskin, M.V. Uspensky, T. Ogawa, P. Janhunen, N. Nishitani, S. Nozawa, M. Lester and S. Milan, Velocities of auroral coherent echoes at 12 and 144 MHz, Ann. Geophys., 20, 1647-1661, 2002.
  37. Laakso, H., R. Grard, P. Janhunen and J.-G. Trotignon, Plasma and wave phenomena induced by neutral gas releases in the solar wind, Ann. Geophys., 20, 1-10, 2002.
  38. Janhunen, P., and A. Olsson, A hybrid simulation model for a stable auroral arc, Ann. Geophys., 20, 1603-1616, 2002.
  39. Janhunen, P., A. Olsson and H. Laakso, Altitude dependence of plasma density in the auroral zone, Ann. Geophys., 20, 1743-1750, 2002.
  40. Laakso, H., R. Pfaff and P. Janhunen, Polar observations of electron density distribution in the Earth's magnetosphere. 1. Statistical results, Ann. Geophys., 20, 1711-1724, 2002.
  41. Laakso, H., R. Pfaff and P. Janhunen, Polar observations of electron density distribution in the Earth's magnetosphere. 2. Density profiles, Ann. Geophys., 20, 1725-1735, 2002.
  42. Janhunen, P., Are the northern plains of Mars a frozen ocean? J. Geophys. Res., 107(E11), 5103, doi:10.1029/2000JE001478, 2002.
  43. Palmroth, M., T.I. Pulkkinen, P. Janhunen, P. and C.-C. Wu, 2003, Stormtime energy transfer in global MHD simulation, J. Geophys. Res., 108(A1), 1048, doi:101029/2002JA009446, 2003.
  44. Vaivads, A., M. Andre, S. Buchert, A. Eriksson, A. Olsson, J.-E. Wahlund, P. Janhunen, G. Marklund, L.M. Kistler, C. Mouikis, D. Winningham, A. Fazakerley and P. Newell,What high altitude observations tell us about the auroral acceleration: a Cluster/DMSP conjunction, Geophys. Res. Lett., 30, 3, 6-1, CiteID 1106, DOI 10.1029/2002GL016006, 2003.
  45. Uspensky, M., Kustov, A.V., Janhunen, P., R. Pellinen, D. Danskin and S. Nozawa., STARE velocities: importance of off-orthogonality and ion motions, Ann. Geophys., 21, 729-743, 2003.
  46. Janhunen, P., A. Olsson, A. Vaivads and W.K. Peterson, Generation of Bernstein waves by ion shell distributions in the auroral region, Ann. Geophys., 21, 881-891, 2003.
  47. Kallio, E. and P. Janhunen, Solar wind and magnetospheric ion impact on Mercury's surface, Geophys. Res. Lett., 30, 17, 1877-1880, SSC 2-1, doi:10.1029/2003GL017842, 2003.
  48. Amm, O., A. Aikio, J.-M. Bosqued, M. Dunlop, A. Fazakerley, P. Janhunen, K. Kauristie, M. Lester, I. Sillanpää, M.G.G.T. Taylor, A. Vontrat-Reberac, K. Mursula and M. Andre, Mesoscale structure of a morning sector ionospheric shear flow region determined by conjugate Cluster II and MIRACLE ground-based observations, Ann. Geophys., 21, 1737-1751 2003.
  49. P. Janhunen, A. Olsson and W.K. Peterson, The occurrence frequency of upward ion beams in the auroral zone as a function of altitude using Polar/TIMAS and DE-1/EICS data, Ann. Geophys., 21, 2059-2072, 2003.
  50. Kallio, E. and P. Janhunen, Modelling the solar wind interaction with Mercury by a quasineutral hybrid model, Ann. Geophys., 21, 2133-2145, 2003.
  51. Olsson, A. and P. Janhunen, Some recent developments in understanding auroral electron acceleration processes, IEEE Trans. Plasma Sci., 31, 6, 1178-1191, 2003.
  52. Janhunen, P., A. Olsson, H. Laakso and A. Vaivads, Middle-energy electron anisotropies in the auroral region, Ann. Geophys., 22, 237-249, 2004.
  53. Palmroth, M., P. Janhunen, T.I. Pulkkinen and H.E.J. Koskinen, Ionospheric energy input as a function of solar wind parameters: global MHD simulation results, Ann. Geophys., 22, 549-566, 2004.
  54. Kullen, A. and P. Janhunen, Relation of polar cap arcs to magnetotail twisting and IMF rotations: a systematic MHD simulation study, Ann. Geophys., 22, 951-970, 2004.
  55. Uspensky, M., Koustov, A., Janhunen, P., Nielsen, E., Kauristie, K., Amm, O., Pellinen, R., Opgenoorth, H. and Pirjola, R.,, STARE Velocities: 2. Evening Westward Electron Flow, Ann. Geophys., 22, 1077-1091, 2004.
  56. Janhunen, P., A. Olsson and H. Laakso, The occurrence frequency of auroral potential structures and electric fields as a function of altitude using Polar/EFI data, Ann. Geophys., 22, 1233-1250, 2004.
  57. Janhunen, P. and E. Kallio, Surface conductivity of Mercury provides current closure and may affect magnetospheric symmetry, Ann. Geophys., 22, 1829-1837, 2004.
  58. Partamies, N., P. Janhunen, K. Kauristie, S. Mäkinen and T. Sergienko, Testing an inversion method for estimating electron energy fluxes from all-sky camera images, Ann. Geophys., 22, 1961-1971, 2004.
  59. Olsson, A., P. Janhunen and W.K. Peterson, Ion shell distributions as free energy source for plasma waves on auroral field lines mapping to plasma sheet boundary layer, Ann. Geophys., 22, 2115-2133, 2004.
  60. Janhunen, P., A. Olsson, J. Hanasz, C.T. Russell, H. Laakso and J.C. Samson, Different Alfven wave acceleration processes of electrons in substorms at 4-5 R_E and 2-3 R_E radial distance, Ann. Geophys., 22, 2213-2227, 2004.
  61. Kallio, E., I. Sillanpää and P. Janhunen, Titan in subsonic and supersonic flow, Geophys. Res. Lett., 31, 15, L15703, 10.1029/2004GL020344, 2004.
  62. Palmroth, M., T.I. Pulkkinen, P. Janhunen and H.E.J. Koskinen, Ionospheric power consumption in global MHD simulation predicted from solar wind measurements, IEEE Transactions on Plasma Science, vol 32, no 4, 2004.
  63. Janhunen, P., Electric sail for spacecraft propulsion, AIAA Journal of Propulsion and Power, 20, 4, 763-764, 2004.
  64. Gunell, H., M. Holmström, E. Kallio, P. Janhunen and K. Dennerl, X-rays from solar wind charge exchange at Mars: a comparison of simulations and observations, Geophys. Res. Lett., 31, L22801, doi:10.1029/2004GL020953, 2004.
  65. Olsson, A., P. Janhunen, Hanasz, J., Mogilevsky, M., Perraut, S. and Menietti, J.D. , Observational study of generation mechanism of substorm-associated low-frequency AKR emissions,, Ann. Geophys., 22, 3571-3582, 2004.
  66. Olsson, A., P. Janhunen, T. Karlsson, N. Ivchenko and L.G. Blomberg, Statistics of Joule heating in the auroral zone and polar cap using Astrid-2 satellite Poynting flux, Ann. Geophys., 22, 4133-4142, 2004.
  67. Kallio, E., and P. Janhunen, The response of the Hermean magnetosphere to the interplanetary magnetic field, Adv. Space Res., 33, 2176-2181, 2004.
  68. Palmroth, M., T.I. Pulkkinen, P. Janhunen, D.J. McComas, C.W. Smith and H.E.J. Koskinen, Role of solar wind dynamic pressure in driving the ionospheric Joule heating, J. Geophys. Res., 109, A11302, doi:10.1029/2004JA010529, 2004.
  69. Janhunen, P., A. Olsson, W.K. Peterson and J.D. Menietti, Latitude-energy structure of multiple ion beamlets in Polar/TIMAS data in plasma sheet boundary layer and boundary plasma sheet below 6 R_E radial distance: basic properties and statistical analysis, Ann. Geophys., 23, 867-876, 2005.
  70. Janhunen, P.,, Olsson, A., Tsyganenko, N.A., Russell, C.T., Laakso, H. and Blomberg, L.G., Statistics of parallel Poynting vector in the auroral zone as a function of altitude using Polar EFI and MFE data and Astrid-2 EMMA data, Ann. Geophys., 23, 1797-1806, 2005.
  71. Gunell, H., M. Holmström, S. Barabash, E. Kallio, P. Janhunen, A.F. Nagy and Y. Ma, Planetary ENA imaging: effects of different interaction models for Mars, Plan. Space Sci., doi:10.1016/j.pss.2005.04.002, 2005. 2005.
  72. Gunell, H., M. Holmström, E. Kallio, P. Janhunen and K. Dennerl, Simulations of X-rays from solar wind charge exchange at Mars: parameter dependence, Adv. Space Res., doi:101016/j.asr.2005.06.007, 2005.
  73. Palmroth, M., P. Janhunen, T.I. Pulkkinen, A. Aksnes, G. Lu, N. Ostgaard, J. Watermann, G.D. Reeves and G.A. Germany, Assessment of ionospheric Joule heating by GUMICS-4 MHD simulation, AMIE and satellite-based statistics: Towards a synthesis, Ann. Geophys., 23, 2051-2068, 2005.
  74. Tanskanen, E., M. Palmroth, T.I. Pulkkinen, H.E.J. Koskinen, P. Janhunen, N. Østgaard, J.A. Slavin and K. Liou,Energetics of a substorm on 15 August, 2001: comparing empirical methods and a global MHD simulation, Adv. Space Res., 36, 10, 1825, 2005.
  75. Laitinen, T.V., T.I. Pulkkinen, M. Palmroth, P. Janhunen and H.E.J. Koskinen, The magnetotail reocnnection region in a global MHD simulation, Ann. Geophysicae, 23, 3753--3764, 2005.
  76. Palmroth, M., P. Janhunen and T.I. Pulkkinen, Hysteresis in solar wind power input to the magnetosphere, Geophys. Res. Lett., 33, L03107, doi:10.1029/2005GL025188, 2006.
  77. Hubert, B., M. Palmroth, T. V. Laitinen, P. Janhunen, S. E. Milan, A. Grocott, S. W. H. Cowley, T. Pulkkinen and J.-C Gérard, Compression of the Earth's magnetotail by interplanetary shocks directly drives transient magnetic flux closure, Geophys. Res. Lett., 33, L10105, doi:10.1029/2006GL026008, 2006.
  78. Palmroth, M., P. Janhunen, G.A. Germany, D. Lummerzheim, K. Liou, D.N. Baker, C. Barth, A.T. Weatherwax and J. Watermann, Precipitation and total power consumption in the ionosphere: global MHD simulation results compared with Polar and SNOE observations, Ann. Geophysicae, 24, 861--872, 2006.
  79. P. Janhunen, Olsson, A., C.T. Russell and H. Laakso, Alfvenic electron acceleration in aurora occurs in global Alfven Resonosphere region, Space Sci. Rev., 122, 89-95, 2006.
  80. Pulkkinen, T.I., M. Palmroth, E.I. Tanskanen, P. Janhunen, H.E.J. Koskinen and T.V. Laitinen, New interpretation of magnetospheric energy circulation, Geophys. Res. Lett., 33, 7, L07101, 10.1029/2005GL025457, 2006.
  81. Kallio, E., A. Fedorov, T. Säles, P. Janhunen, W. Schmidt, H. Koskinen, P. Riihelä, S. Barabash R. Lundin, M. Holmström, H. Gunell, K. Brinkfeld, Y. Futaana, H. Andersson, M. Yamauchi, A. Grigoriev, J.-A. Sauvaud, J.-J. Thocaven, J.D. Winningham, R.A. Frahm, J.R. Sharber, J. Scherrer, A.J. Coates, D.R. Linder, D.O. Kataria, J. Kozyra, J.G. Luhmann, E. Roelof, D. Williams, S. Livi, C.C. Curtis, K.C. Hsieh, B.R. Sandel, M. Grande, M. Carter, S. McKenna-Lawler, S. Orsini, R. Cerulli-Irelli, M. Maggi, P. Wurz, P. Bochsler, N. Krupp, J. Woch, M. Fraenz, K.k Asamura and C. Dierker, Ion escape at Mars: comparison of a 3-D hybrid simulation with Mars Express IMA/ASPERA-3 measurements, Icarus, 182, 350-359, 2006.
  82. Laitinen, T.V., P. Janhunen, T.I. Pulkkinen, M. Palmroth and H.E.J. Koskinen, On the characterization of magnetic reconnection in global MHD simulations, Ann. Geophysicae, 24, 3059-3069, 2006.
  83. Kallio, E., R. Järvinen and P. Janhunen, Venus-solar wind interaction: asymmetries and the escape of O+ ions, Plan. Space Sci., 54, issues 13-14, 11/2006.
  84. Sillanpää, I., E. Kallio, P. Janhunen, W. Schmidt, A.-M. Harri, T. Mäkinen, K. Mursula, J. Vilppola and P. Tanskanen, Hybrid simulation study of ion escape at Titan for different orbital positions, Adv. Space Res., 38, 799-805, 2006.
  85. Kallio, E., A. Fedorov, S. Barabash, P. Janhunen, H. Koskinen, W. Schmidt, R. Lundin, H. Gunell, M. Holmstrom, Y. Futaana, M. Yamauchi, A. Grigoriev, J.D. Winningham, R. Frahm and J.R. Sharber, Energisation of O+ and O2+ ions at Mars: an analysis of a 3-D quasi-neutral hybrid model simulation, Space Sci. Rev., 126, 39-62, 2006.
  86. Gunell, H., E. Kallio, R. Järvinen, P. Janhunen, M. Holmström and K. Dennerl, Simulations of solar wind charge exchange X-ray emissions at Venus, Geophys. Res. Lett., 34, L03107, doi:10.1029/2006GL028602, 2007.
  87. Janhunen, P., H. Kaartokallio, I. Oksanen, K. Lehto and H. Lehto, Biological feedbacks as cause and demise of Neoproterozoic icehouse: astrobiological prospects for faster evolution and importance of cold conditions, Plos One 2(2): e214. doi:10.1371/journal.pone.0000214, 2007.
  88. Janhunen, P. and A. Sandroos, Simulation study of solar wind push on a charged wire: basis of solar wind electric sail propulsion, Ann. Geophys., 25, 755-767, 2007.
  89. Honkkila, V. and P. Janhunen, HLLC solver for ideal relativistic MHD, J. Comp. Phys., 223, 643-656, 2007.
  90. Sillanpää, I., E. Kallio, R. Järvinen and P. Janhunen, Oxygen ions at Titan's exobase in a Voyager 1 type 1 interaction from a hybrid simulation, J. Geophys. Res., 112, A12205, doi:10.1029/2007JA012348, 2007.
  91. Kallio, E., I. Sillanpää, R. Järvinen, P. Janhunen, M. Dougherty, C. Bertucci and F. Neubauer, Morphology of the magnetic field near Titan: Hybrid model study of the Cassini T9 flyby, Geophys. Res. Lett., 34, L24S09, 2007.
  92. Laitinen, T.V., M. Palmroth, T.I. Pulkkinen, P. Janhunen and H.E.J. Koskinen, Continuous reconnection line and pressure-dependent energy conservion on the magnetopause in a global MHD model, J. Geophys. Res., 12, A11201, 2007.
  93. Mengali, G., A. Quarta and P. Janhunen, Electric sail performance analysis, Journal of Spacecraft and Rockets, 45, 122-129, 2008.
  94. Kallio, E., R.A. Frahm, Y. Futaana, A. Fedorov and P. Janhunen, Morphology of the magnetic field near Mars and the role of the magnetic crustal anomalies: Dayside region, Planet. Space Sci., 56, 6, 852-855, 2008.
  95. Frahm, R. A., E. Kallio, F. Yoshifumi, A. Fedorov, and P. Janhunen, Variations of the magnetic field near Mars caused by magnetic crustal anomalies, Planet. Space Sci., 56, 6, 856-860, 2008.
  96. Kallio, E., S. Barabash, P. Janhunen and R. Järvinen, Magnetized Mars: transformation of Earth-like magnetosphere to Venus-like induced magnetosphere, Planet. Space Sci., 56, 6, 823-827, 2008.
  97. Frilund, H., E. Kallio, M. Yamauchi, A. Fedorov, P. Janhunen, R. Lundin, J.-A Sauvaud, and S. Barabash, The magnetic field near Mars: a comparison between a hybrid model, Mars Global Surveyor and Mars Express observations, Planet. Space Sci., 56, 6, 828-831, 2008.
  98. Järvinen, R., E. Kallio I. Sillanpää and P. Janhunen, Hybrid modelling the Pioneer Venus Orbiter magnetic field observations, Adv. Space Res., 41, 1361-1374, 2008.
  99. Kallio, E., T.L. Zhang, S. Barabash, I. Sillanpää, P. Janhunen and A. Fedorov, Venusian induced magnetosphere: a case study of plasma and magnetic field measurements on Venus Express mission, Planet. Space Sci., 56, 6, 796-801, 2008.
  100. Kallio. E, P. Wurz, R. Killen, S. McKenna-Lawlor, A. Milillo, A. Mura, S. Massetti, S. Orsini, H. Lammer, P. Janhunen and W-H. Ip, On the impact of multiply charged heavy solar wind ions on the surface of Mercury, the Moon and Ceres, Plan. Space Sci., 56, 11, 1506-1516, 2008.
  101. Kallio, E., A. Fedorov, E. Budnik, S. Barabash, R. Jarvinen, and P. Janhunen, On the properties of O+ and O2+ ions in a hybrid model and in Mars Express IMA/ASPERA-3 data: A case study, Plan. Space Sci., 56, 1204-1213, 2008.
  102. Uspensky, M.V., R.J. Pellinen and P. Janhunen, The electron drift velocity, ion acoustic speed and irregularity drifts in high-latitude E-region, Ann. Geophys., 26, 3395-3409, 2008.
  103. Mengali, G., A. Quarta and P. Janhunen, Considerations of electric sailcraft trajectory design, J. British Interplanetary Soc., 61, 8, 326-329, 2008.
  104. Janhunen, P., The electric sail - a new propulsion method which may enable fast missions to the outer solar system, J. British Interplanetary Soc., 61, 8, 322-325, 2008.
  105. Janhunen, P., On the feasibility of a negative polarity electric sail, Ann. Geophys., 27, 1439-1447, 2009.
  106. Wimmer-Schweingruber, R.F, R. McNutt, N.A. Schwadron, P.C. Frisch, M. Gruntman, P. Wurz, E. Valtonen and the IHP/HEX team [of which P. Janhunen is a member], Interstellar heliospheric probe/heliospheric boundary explorer mission - a mission to the outermost boundaries of the solar system , Exp. Astron., 24, 9-46, 2009.
  107. Janhunen, P., Increased electric sail thrust through removal of trapped shielding electrons by orbit chaotisation due to spacecraft body, Ann. Geophys.,27, 3089-3100, 2009.
  108. Liu, K., E. Kallio, R. Jarvinen, H. Lammer, H.I.M. Lichtenegger, Yu. N. Kulikov, N. Terada, T.L. Zhang and P. Janhunen, Hybrid simulations of the O+ ion escape from Venus: Infuence of the solar wind density and the IMF x component, Adv. Space Res., 43, 1436-1441, 2009.
  109. Kallio, E., K. Liu, R. Jarvinen, V. Pohjola and P. Janhunen, Oxygen ion escape at Mars in a hybrid model: high energy and low energy ions, Icarus, doi:10.1016/j.icarus.2009.05.015, 2009.
  110. Palmroth, M., T.I. Pulkkinen, J. Polvi, A. Viljanen and P. Janhunen, On the response of ionospheric electrojets to solar wind discontinuities, Ann. Geophys., 27, 3791-3803, 2009.
  111. Toivanen, P.T. and P. Janhunen, Electric sailing under observed solar wind conditions, Astrophys. Space Sci. Trans., 5, 61-69, 2009.
  112. Jarvinen, R., E. Kallio, P. Janhunen, S. Barabash, T. L. Zhang, V. Pohjola, and I. Sillanpää, Oxygen ion escape from Venus in a global hybrid simulation: role of the ionospheric O+ ions, Ann. Geophys, 27, 4333-4348, 2009.
  113. Janhunen, P., Electrostatic plasma brake for deorbiting a satellite, J. Prop. Power, 26, 370-372, 2010.
  114. Kovacs, A. and Janhunen, P., Thermo-photovoltaic spacecraft electricity generation, Astrophys. Space Sci. Trans., 6, 19-26, 2010.
  115. Jarvinen, R., Kallio, E., Dyadechkin, S., Janhunen, P. and Sillanpää, I., Widely different characteristics of oxygen and hydrogen ion escape from Venus, Geophys. Res. Lett., 37, L16201 (08/2010) doi:10.1029/2010GL044062, 2010.
  116. Merikallio, S. and Janhunen, P., Moving an asteroid with electric solar wind sail, Astrophys. Space Sci. Trans., 6, 41-48, 2010.
  117. Janhunen, P., Toivanen, P.T., Polkko, J., Merikallio, S., Salminen, P., Haeggström, E., Seppänen, H., Kurppa, R., Ukkonen, J., Kiprich, S., Thornell, G., Kratz, H., Richter, L., Krömer, O., Rosta, R., Noorma, M., Envall, J., Lätt, S., Mengali, G., Quarta, A.A., Koivisto, H., Tarvainen, O., Kalvas, T., Kauppinen, J., Nuottajärvi, A. and Obraztsov, A., Electric solar wind sail: Towards test missions, Rev. Sci. Instrum., invited review, cover article, 81, 111301, 2010.
  118. Palmroth, M., Koskinen H.E.J., Pulkkinen, T.I., Toivanen, P.K., Janhunen, P., Milan, S.E. and Lester, M., Magnetospheric feedback in solar wind energy transfer, J. Geophys. Res., 115, A00I10, 2010, doi:10.1020/2010JA015746.
  119. Pulkkinen, T.I., Palmroth, M., Janhunen, P., Koskinen, H.E.J., McComas, D.J. and Smith, C.W., Timing of changes in the solar wind energy input in relation to ionospheric response, J. Geophys. Res., 115, A00I09, 2010, doi:10.1029/2010JA015764.
  120. Honkonen, I., Palmroth, M., Pulkkinen, T. I., Janhunen, P. and Aikio, A., On large plasmoid formation in a global magnetohydrodynamic simulation. Ann. Geophys., 29, 167-179, 2011. http://www.ann-geophys.net/29/167/2011/angeo-29-167-2011.html
  121. Seppänen, H., Kiprich, S., Kurppa, R., Janhunen, P. and Haeggström, E., Wire-to-wire bonding of um-diameter aluminum wires for the Electric Solar Wind Sail. Microelectronic Engineering, 88,3267-3269, 2011.
  122. 47. Sillanpää I., Young D. T., Crary F., Thomsen M., Reisenfeld D., Wahlund J-E., Bertucci C., Kallio E., Järvinen R. and Janhunen P., Cassini Plasma Spectrometer and hybrid model study on Titan's interaction: Effect of oxygen ions. J. Geophys. Res., 116, A07223, 2011, http://dx.doi.org/10.1029/2011JA016443.
  123. Uspensky, M.V., Janhunen, P., Koustov, A.V., and Kauristie, K., Volume cross section of auroral radar backscatter and RMS plasma fluctuations infereed from coherent and incoherent scatter data: a response on backscatter volume parameters. Ann. Geophys., 29, 1081-1092, 2011.

Conference proceedings

  1. Janhunen, P. and A. Huuskonen, On role of precipitation-enhanced conductivities in mesoscale ionosphere-magnetosphere coupling, Proceedings of First International Conference on Substorms (ICS-1), Kiruna, Sweden, ESA-SP 335, 33-37, 1992.
  2. Janhunen, P., H.E.J. Koskinen and T.I. Pulkkinen, A new global ionosphere-magnetosphere coupling simulation utilizing locally varying time step, Proceedings of ICS-3, Versailles, France, 13-17 May, ESA SP-389, 1996.
  3. Toivanen, P.K. T.I. Pulkkinen, P. Janhunen and H.E.J. Koskinen, Magnetospheric electric field during substorm growth phase, Proceedings of ICS-3, Versailles, France, 13-17 May, ESA SP-389, 1996.
  4. Janhunen, P., GUMICS-3 - a global ionosphere-magnetosphere coupling simulation with high ionospheric resolution, ESA Symposium Proceedings on 'Environmental Modelling for Space-based applications', ESTEC, Noordwijk, NL, 18-20 Sep 1996, ESA SP-392, 1996.
  5. Janhunen, P., O. Amm and R.A. Greenwald, Adaptive mesh in global magnetosphere simulation: Comparison with global convection, Proceedings of the 1998 Cambridge Symposium/Workshop in Geoplasma Physics on 'Multiscale Phenomena in Space Plasmas II', Physics of Space Plasmas 15, T. Chang and J.R: Jasperse (eds.), MIT, 1998.
  6. Syrjäsuo, M.T., T.I. Pulkkinen, P. Janhunen, A. Viljanen, R.J. Pellinen, K. Kauristie, H.J. Opgenoorth, S. Wallman, P. Eglitis, P. Karlsson, O. Amm, E. Nielsen and C. Thomas, Observations of substorm electrodynamics by using the MIRACLE network, Proceedings of ICS-4, Editors: S. Kokubun and Y. Kamide, Astrophysics and Space Science Library vol 238, Terra Scientific Publishing Company/Kluwer Academic Publishers, pp. 111-114, 1998.
  7. Kauristie, K., A. Viljanen, A. Pulkkinen, O. Amm, P. Janhunen, T.I. Pulkkinen, R. Pirjola, R.J. Pellinen and M. Brittnacher, On the coordinated use of MIRACLE and satellite observations - A case study of a space weather event, Proc. Cluster-II Workshop on Multiscale/Multipoint Plasma Measurements, London, 22-24 Sep. 1999, ESA SP-449, 2000.
  8. Amm, O., P. Janhunen, H.J. Opgenoorth, T.I. Pulkkinen, and A. Viljanen,Ionospheric shear flow situations observed by the MIRACLE network, and the concept of Harang discontinuity, Magnetospheric Current Systems, Geophysical Monograph 118, AGU, 2000.
  9. Palmroth, M., P. Janhunen, and T.I. Pulkkinen, MHD simulations of dayside magnetospheric boundaries, Proceedings of ISSS-6, 114-117, 2001.
  10. Palmroth, M., T. I. Pulkkinen, and P. Janhunen, MHD simulation of energy transfer from the solar wind into the magnetosphere, in Proceedings of ICS-6, edited by R. M. Winglee, 205-210, 2002.
  11. Laitinen, T.V., T.I. Pulkkinen, P. Janhunen, H.E.J. Koskinen and M. Palmroth, Reconnection in the magnetotail during a substorm, Proceedings of ICS-7, Finnish Meteorological Institute, 2004.
  12. Hubert, B. M. Palmroth, S.E. Milan, A. Grocott, P. Janhunen, K. Kauristie, S.W.H. Cowley, T.I. Pulkkinen and J.-C. Gerard, Monitoring the dayside and nightside reconnection rates during various auroral events using IMAGE FUV and SuperDARN data. Proceedings of International Conference on Substorms 8, 2006.
  13. Palmroth, M., T.I. Pulkkinen, T.V. Laitinen, H.E.J. Koskinen, and P. Janhunen, Time history effects at the magnetopause: Hysteresis in power input and its implications to substorm processes. Proceedings of ICS-8, 2006.
  14. Janhunen, P., Mengali, G. and Quarta, A. Electric sail propulsion modeling and mission analysis, Int. Electric Propulsion Conf., Paper IEPC-2007-352, Florence, Italy, Sept 17-20, 2007.
  15. Janhunen, P., MHD-hybrid-kinetic simulations of solar wind interacting with bodies: magnetized and nonmagnetized planets and Electric Sailing spacecraft, in Numerical Modeling of Space Plasma Flows: Astronum-2007, Pogorelov, Audit and Zank (eds.), 135-144, 2008
  16. Janhunen, P., Recent advances in Electric Sail development, in Numerical Modeling of Space Plasma Flows: Astronum-2008, Pogorelov, Audit, Colella and Zank (eds.), 136-140, 2009.
  17. Janhunen, P., Status report of the Electric Sail: a revolutionary near term propulsion technique in the solar system, in Proc. 6th IAA Symp. on Realistic Near-Term Advanced Scientific Space Missions: Missions to the outer solar system and beyond, G. Genta (ed.), Aosta, Italy, 6-9 July 2009, 49-54, 2009.
  18. Janhunen, P., Physics of thrust prediction of the solar wind electric sail propulsion system, ASTRONUM-2009, ASP Conf. Series 429, 2010.
  19. Jarvinen, R., Kallio, E., Janhunen, P., Pohjola, V. and Sillanpää, I., Grid convergence of the HYB-Venus hybrid simulation, ASTRONUM-2009, ASP Conf. Series 429, 2010.
  20. Dyadechkin S., Kallio E., Järvinen R., Janhunen P., Semenov V. S., Biernat H. K., On the development of a spherical hybrid model - Lessons and applications. Advances in Plasma Astrophysics, Proceedings of the International Astronomical Union, IAU Symposium, Volume 274, 89-91, 2011. http://dx.doi.org/10.1017/S1743921311006636
  21. Janhunen, P., et al., 2011: Electric Solar Wind Sail propulsion system development. Proc. International Electric Propulsion Conference 2011, IEPC-2011-058.

Other publications

  1. Mälkki, A. and P. Janhunen, Numerical space plasma simulations, /csc/news 2 (4), 3-4, 1990.
  2. Janhunen, P., E. Kyrölä and J. Silen, Geophysical simulations, /csc/news 4 (2), 9-10, 1992.
  3. Janhunen, P. and D. Stein, MathHDF: MathLink-based distributed visualization between Mathematica and HDF files, Computers in Physics 7 (3), 290-294, 1993.
  4. (Doctoral thesis)Janhunen, P., Numerical simulations of E-region irregularities and ionosphere-magnetosphere coupling, Finnish Meteorological Institute Contributions, 13, Finnish Meteorological Institute, Helsinki, 1994.
  5. Janhunen, P., Future-pointing vectors, Opinion, CSC News, Vol 8, 1, 11, 1996.
  6. Gunell, H., M. Holmström, S. Barabash, E. Kallio, P. Janhunen, A.F. Nagy and Y. Ma, Different models of the Mars solar wind interaction: Implications for ENA imaging, IRF Scientific Report 281, August 2003, Kiruna, Sweden.
  7. Janhunen, P. Katsaus tulevaisuuden avaruusalusten propulsiomenetelmiin, Avaruusluotain 3/2003, Suomen Avaruustutkimusseura, 2003.
  8. Toivanen, P.K., Janhunen, P. and Koskinen, H.E.J., Magnetospheric Propulsion (eMPii), Finnish Meteorological Institute Reports 2/2004, ISBN 951-697-594-1, ISSN 0782-6079, 78 p., Finnish Meteorological Institute, 2004. Published version of the Final Report of ESA/ESTEC Contract 16361/02/NL/LvH.
  9. Janhunen, P., Sähköinen aurinkotuulipurje - uusi tapa liikkua avaruudessa, Avaruusluotain 4/2006, Suomen Avaruustutkimusseura, 2006.
  10. Janhunen, P., Sähköpurje, aurinkovoimasatelliitit ja energiantuotanto, Arkhimedes 3/2007. Available online as English translation Electric sail, solar power satellites and energy production.
  11. Janhunen, P., Column on electric sail (Sähköpurjekolumni) in every issue of Spaceprobe (Avaruusluotain), 2007-2010
  12. Janhunen, P., Fermi paradox (Fermin paradoksi), Spaceprobe (Avaruusluotain) 4/2008
  13. Janhunen, P., Applications of electric sail, part 1: Electric sail tether as plasma brake - space debris to history's wastebasket? (Sähköpurjeen sovelluksia, osa 1: Sähköpurjelieka plasmajarruna - avaruusromu historian romukoppaan?), Spaceprobe (Avaruusluotain) 4/2009
  14. Janhunen, P., Applications of electric sail, part 3: Flight out of the solar system (Sähköpurjeen sovelluksia, osa 3: Lento ulos aurinkokunnasta), Spaceprobe (Avaruusluotain) 2/2010
  15. Janhunen, P., Applications of electric sail, part 4: Giant planet atmosphere probes (Sähköpurjeen sovelluksia, osa 4: Jättiläisplaneettojen ilmakehäluotaimet), Spaceprobe (Avaruusluotain) 3/2010
  16. Janhunen, P., Sustainable and wide space activity (Kestävää ja laajaa avaruustoimintaa), Spaceprobe (Avaruusluotain) 4/2010
  17. Janhunen, P., Applications of electric sail, part 5: Asteroid touring (Kiertoajelu asteroidivyöhykkeellä), Spaceprobe (Avaruusluotain) 4/2010.
  18. Janhunen, P., Applications of electric sail, part 6: Continuous force non-Keplerian orbits: helioseismology, solar wind monitoring, polar meteorology (Jatkuvaa voimaa vaativat radat: helioseismologia, aurinkotuulimonitorointi, napa-alueiden meteorologia), Spaceprobe (Avaruusluotain) 1/2011.
  19. Janhunen, P., Applications of electric sail, part 7: To mercury in 9 months and back (Merkuriukseen 9 kuukaudessa ja takaisin), Spaceprobe (Avaruusluotain) 2-3/2011.
  20. Janhunen, P., Applications of electric sail, part 8: Kuiper belt object flybys (Kuiperin vyöhykkeen kohteiden ohilennot), Spaceprobe (Avaruusluotain) 4/2011.
Pekka Janhunen (First.Last@fmi.fi), Updated Dec 15, 2011