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Multi-spacecraft studies of plasma boundaries at Mars

By Niklas Johan Theodor Edberg


We study the solar wind interaction with Mars and the location, shape, dynamics and controlling factors of the magnetic pileup boundary (MPB) and the bow shock (BS), which form as a result of this interaction, by using single as well as two-spacecraft measurements.\ud By using Mars Global Surveyor (MGS) measurements we produce statistical models of the shapes of the two boundaries. The influence on the boundaries from the crustal magnetic fields of Mars is also studied. We find that the MPB is pushed to higher altitudes depending on the strength of the underlying crustal fields while the BS is found at higher altitudes over the entire southern hemisphere of Mars, where the crustal fields are strongest.\ud By using the simultaneous measurements from Rosetta and Mars Express\ud (MEX) we study the boundaries during high and low solar wind dynamic pressure. During low pressure, simultaneous two-spacecraft measurements provide leverage on the accuracy of the shape of the MPB and BS. Their previously modelled shapes are found to be in agreement with the shapes derived from these two-point measurements. During high pressure, we observe how the boundaries become asymmetric in their shapes, possibly due to increased plasma outflow over one hemisphere, which lowers the plasma pressure on that side of the planet and results in an asymmetric shape.\ud By using MGS and MEX measurements we study the altitude of the boundaries as functions of solar wind dynamic pressure, solar EUV flux and crustal magnetic field strength. We also examine the effect of the direction of the interplanetary magnetic field on the boundaries. We find that the dynamic pressure, EUV flux and crustal magnetic fields are the main governing factors of both the MPB and the BS

Publisher: University of Leicester
Year: 2009
OAI identifier: oai:lra.le.ac.uk:2381/7584

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  4. (2004). A coherent model of the crustal magnetic field of Mars, doi
  5. (2009). A comparison of global models for the solar wind interaction with mars, Icarus, doi
  6. (2003). A proxy for determining solar wind dynamic pressure at Mars using Mars Global Surveyor data, doi
  7. (2009). A review of observed variability in the dayside ionosphere of mars, doi
  8. (2007). Absorption of MARSIS radar signals: Solar energetic particles and the daytime ionosphere, doi
  9. (2000). An altitude-normalized magnetic map of Mars and its interpretation, doi
  10. (2003). An n = 90 internal potential function of the Martian crustal magnetic field, doi
  11. Barabash (2008b), Access of solar wind electrons into the Martian magnetosphere, doi
  12. (2004). Bow Shock and Upstream Phenomena at Mars, Space Sci. doi
  13. (2003). Connerney
  14. (2004). Crustal magnetic field of Mars, doi
  15. (2006). Current sheets at low altitudes in the Martian magnetotail, doi
  16. (2008). Electron densities in the upper ionosphere of Mars from the excitation of electron plasma oscillations, doi
  17. (2008). Electron density estimations derived from spacecraft potential measurements BIBLIOGRAPHY 155 on Cluster in teneous plasma regions, doi
  18. Eriksson (2008), Statistical analysis of the location of the martian magnetic pileup boundary and bow shock and the influence of crustal magnetic fields, doi
  19. (1994). Ershkovich doi
  20. (2002). Factors controlling the location of the bow shock at Mars, doi
  21. (1989). First measurements of plasma waves near doi
  22. (1989). First measurements of the ionospheric plasma escape from doi
  23. (1999). Flasar doi
  24. (2006). for the Mars Express mission, doi
  25. (1999). Global distribution of crustal magnetization discovered by the Mars Global Surveyor MAG/ER experiment,
  26. (2009). Global distribution, structure, and solar wind control of low altitude current sheets at mars, Icarus, doi
  27. (2008). Influence of IMF draping direction and crustal magnetic field location on Martian ion beams, doi
  28. (2009). Ion escape from mars as a function of solar wind conditions: A statistical study, Icarus, In press, doi
  29. (2002). Ion escape from Mars in a quasineutral hybrid model, doi
  30. (2005). Ionospheric characteristics above Martian crustal magnetic anomalies, doi
  31. (2009). Ionospheric storms on Mars: Impact of the corotating interaction region, doi
  32. (1998). Magnetic field and plasma observations at Mars: Initial results of the Mars Global Surveyor mission, doi
  33. (2001). Magnetic field draping around Mars: Mars Global Surveyor results, doi
  34. (2003). Magnetic field draping enhancement at the Martian magnetic pileup boundary from Mars global surveyor observations, doi
  35. (2004). Mars Global Surveyor observations of solar wind magnetic field draping around Mars, Space Sci. doi
  36. (1990). Martian bow shock -Phobos observations, doi
  37. (1996). Martian planetopause as seen by the plasma wave system onboard Phobos 2, doi
  38. (2006). Martian shock and magnetic pile-up boundary positions and shapes determined from the Phobos 2 and Mars Global Surveyor data sets, doi
  39. (1992). Multiple-ion effects at Martian plasma boundaries, doi
  40. (2002). Observations of the latitude dependence of the location of the martian magnetic pileup boundary, doi
  41. (2008). On the properties of O+ and O+2 ions in a hybrid model and in Mars Express IMA/ASPERA-3 data: A case study, doi
  42. (2008). Photoemission currents, solar EUV flux and spacecraft potential,
  43. (2004). Plasma boundaries at Mars: a 3-D simulation study, doi
  44. (1990). Plasma composition measurements of the Martian magnetosphere morphology, doi
  45. (2006). Plasma morphology at Mars: Aspera-3 observations, doi
  46. (1991). Plasma wave system measurements of the Martian bow shock from the Phobos 2 spacecraft, doi
  47. (1993). Position and shape of the Martian bow shock - The Phobos 2 plasma wave system observations, doi
  48. (2001). Probing Mars’ crustal magnetic field and ionosphere with the MGS Electron Reflectometer, doi
  49. (2007). ROMAP: Rosetta Magnetometer and Plasma Monitor, Space Sci. doi
  50. (2009). Rosetta swing-by at mars - an analysis of the romap measurements in comparison with results of 3-d multi-ion hybrid simulations and mex/aspera-3 data, doi
  51. (2007). RPC-IES: The Ion and Electron Sensor of the Rosetta Plasma Consortium, Space Sci. doi
  52. (2007). RPC-LAP: The Rosetta Langmuir Probe Instrument, doi
  53. (2007). RPC-MAG The Fluxgate Magnetometer in the ROSETTA Plasma Consortium, Space Sci. doi
  54. (2006). Simulated solar wind plasma interaction with the Martian exosphere: influence of the solar EUV flux on the bow shock and the magnetic pile-up boundary, doi
  55. (2006). Simulation of the Cluster-spacecraft floating probe potential, doi
  56. (1988). Solar and interplanetary control of the location of the Venus bow shock, doi
  57. (2008). Solar forcing and planetary ion escape from doi
  58. (2009). Solar wind erosion of the polar regions of the Mars ionosphere, doi
  59. (1981). Solar wind flow about the terrestrial planets. I - Modeling bow shock position and shape, doi
  60. (1980). Solar wind flow past Venus - Theory and comparisons, doi
  61. (2009). Solar-wind control of the hot oxygen corona around Mars, doi
  62. (2005). Tectonic implications of Mars crustal magnetism, doi
  63. (1931). The absorption and dissociative or ionizing effect of monochromatic radiation in an atmosphere on a rotating earth part II. doi
  64. (1931). The absorption and dissociative or ionizing effect of monochromatic radiation in an atmosphere on a rotating earth, doi
  65. (1993). The dependence of the Martian magnetopause and bow shock on solar wind Ram pressure according to PHOBOS 2 TAUS ion spectrometer measurements, doi
  66. (2003). The influence of a minimagnetopause on the magnetic pileup boundary at Mars, doi
  67. (2006). The magnetic field draping direction at Mars from doi
  68. (1977). The Martian ionosphere as observed by the Viking retarding potential analyzers, doi
  69. (1994). The relationship between the magnetic field in the Martian magnetotail and upstream solar wind parameters, doi
  70. (1991). The solar wind interaction with Mars - doi
  71. (2000). The solar wind interaction with Mars: locations and shapes of the bow shock and the magnetic pile-up boundary from the observations of the MAG/ER experiment onboard Mars Global Surveyor, doi
  72. (2004). Threedimensional, multispecies, high spatial resolution MHD studies of the solar wind interaction with Mars, doi
  73. Trotignon (2004), The plasma environment of Mars, doi
  74. Trotignon (2009a), Rosetta and Mars Express observations of the influence of high solar wind dynamic pressure on the Martian plasma environment, doi
  75. Trotignon (2009c), Simultaneous measurements of Martian plasma boundaries by Rosetta and Mars Express, doi
  76. (1997). Upper limits to the outflow of ions at Mars: Implications for atmospheric evolution, doi
  77. (2008). Variation of the Martian ionospheric electron density from Mars Express radar soundings, doi
  78. Winglee (2007), High-resolution multifluid simulations of the plasma environment near the Martian magnetic anomalies, doi

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