Solar System Research

, Volume 45, Issue 1, pp 30–33 | Cite as

Dense interstellar clouds and ionization of the atmosphere and soil of mars

  • A. K. Pavlov
  • V. M. Ostryakov
  • G. I. Vasilyev


Using the standard GEANT4 code, we calculated the ionization rate of the Mars atmosphere and the dose absorbed by the planet’s soil caused by the galactic cosmic rays and the anomalous cosmic ray component in the heliosphere. Cases of the solar system passing through dense molecular clouds leading to an increase of the energetic particle flux at the orbit of Mars and cases of thickness variation of the atmosphere itself are considered.


Solar Wind Solar System Research Martian Atmosphere Martian Soil Dense Molecular Cloud 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Armstrong, J.C., Leovy, C.B., and Quinn, T., A 1 Gyr Climate Model for Mars: New Orbital Statistics and the Importance of Seasonally Resolved Polar Processes, Icarus, 2004, vol. 171, pp. 255–271.CrossRefADSGoogle Scholar
  2. Dartnell, L.R., Desorgher, L., Ward, J.M., and Coates, A.J., Modeling the Surface and Subsurface Martian Radiation Environment: Implications for Astrobiology, Geophys. Rev. Lett., 2007a, vol. 34, p. L02207.CrossRefGoogle Scholar
  3. Dartnell, L.R., Desorgher, L., Ward, J.M., and Coates, A.J., Martian Sub-Surface Ionising Radiation: Biosignatures and Geology, Biogeosci., 2007b, vol. 4, pp. 545–558.CrossRefADSGoogle Scholar
  4. Frail, D.A., Cordes, J.M., Hankins, T.H., and Weisberg, J.M., H I Absorption Measurements toward 15 Pulsars and the Radial Distribution of Diffuse Ionized Gas in the Galaxy, Astrophys. J., 1991, vol. 382, pp. 168–181.CrossRefADSGoogle Scholar
  5. Frail, D.A., Weisberg, J.M., Cordes, J.M., and Mathers, C., Probing the Interstellar Medium with Pulsars on AU Scales, Astrophys. J., 1994, vol. 436, pp. 144–151.CrossRefADSGoogle Scholar
  6. Klecker, B., Mewaldt, R.A., Bieber, J.W., et al., Anomalous Cosmic Rays, Space Sci. Rev., 1998, vol. 83, pp. 259–308.CrossRefADSGoogle Scholar
  7. Laskar, J. and Robutel, P., The Chaotic Obliquity of the Planets, Nature, 1993, vol. 361, pp. 608–612.CrossRefADSGoogle Scholar
  8. Laskar, J., Levrard, B., and Mustard, J.F., Orbital Forcing of the Martian Polar Layered Deposits, Nature, 2002, vol. 419, pp. 375–377.CrossRefADSGoogle Scholar
  9. Lodders, K. and Fegley, B., An Oxygen Isotope Model for the Composition of Mars, Icarus, 1997, vol. 126, no. 126(2), pp. 373–394.CrossRefADSGoogle Scholar
  10. Mileikowsky, C., Cucinotta, F.A., Wilson, J.W., et al., Natural Transfer of Viable Microbes in Space: 1. From Mars to Earth and Earth to Mars, Icarus, 2000, vol. 145, no. 145(2), pp. 391–427.CrossRefADSGoogle Scholar
  11. Moskalenko, I.V., Strong, A.W., Ormes, J.F., and Potgieter, M.S., Secondary Antiprotons and Propagation of Cosmic Rays in the Galaxy and Heliosphere, Astrophys. J., 2002, vol. 565, pp. 280–296.CrossRefADSGoogle Scholar
  12. Pavlov, A.K., Blinov, A.V., and Konstantinov, A.N., Sterilization of Martian Surface by Cosmic Radiation, Planet. Space Sci., 2002, vol. 50, pp. 669–673.CrossRefADSGoogle Scholar
  13. Pavlov, A.A., Pavlov, A.K., Mills, M.J., et al., Catastrophic Ozone Loss during Passage of the Solar System through an Interstellar Cloud, Geophys. Rev. Lett., 2005, vol. 32, p. L01815.CrossRefGoogle Scholar
  14. Stone, E.C., Cummings, A.C., and Webber, W.R., The Distance to the Solar Wind Termination Shock in 1993 and 1994 from Observations of Anomalous Cosmic Rays, J. Geophys. Res., 1996, vol. 101(A5), pp. 11017–11025.CrossRefADSGoogle Scholar
  15. Talbot, R.J. and Newman, M.J., Encounters between Stars and Dense Interstellar Clouds, Astrophys. J. Suppl., 1977, vol. 34, pp. 295–308.CrossRefADSGoogle Scholar
  16. Ward, W.R., Present Obliquity Oscillations of Mars: Fourth-Order Accuracy in Orbital Eccentricity and Inclination, J. Geophys. Res., 1979, vol. 84(1), pp. 237–241.CrossRefADSGoogle Scholar

Copyright information

© Pleiades Publishing, Ltd. 2011

Authors and Affiliations

  • A. K. Pavlov
    • 1
  • V. M. Ostryakov
    • 2
  • G. I. Vasilyev
    • 1
  1. 1.A.F. Ioffe Physical-Technical InstituteSt. PetersburgRussia
  2. 2.St. Petersburg State Polytechnic UniversitySt. PetersburgRussia

Personalised recommendations