Modelling the surface and subsurface Martian radiation environment: Implications for astrobiology

@article{Dartnell2007ModellingTS,
  title={Modelling the surface and subsurface Martian radiation environment: Implications for astrobiology},
  author={L. R. Dartnell and Laurent Desorgher and J. M. Ward and A. J. Coates},
  journal={Geophysical Research Letters},
  year={2007},
  volume={34}
}
The damaging effect of ionising radiation on cellular structure is one of the prime limiting factors on the survival of life in potential astrobiological habitats. Here we model the propagation of solar energetic protons and galactic cosmic ray particles through the Martian atmosphere and three different surface scenarios: dry regolith, water ice, and regolith with layered permafrost. Particle energy spectra and absorbed radiation dose are determined for the surface and at regular depths… 

MODELLING PLANETARY RADIATION ENVIRONMENTS : ASTROBIOLOGICAL PERSPECTIVES

The damaging effect of ionizing radiation on cellular structure is one of the major limiting factors on the survival of life in potential extraterrestrial habitats. Here we describe in detail the

Computer modeling and experimental work on the astrobiological implications of the martian subsurface ionising radiation environment

Any microbial life extant in the top meters of the martian subsurface is likely to be held dormant for long periods of time by the current permafrost conditions. In this potential habitable zone, a

Martian sub-surface ionising radiation: biosignatures and geology

Abstract. The surface of Mars, unshielded by thick atmosphere or global magnetic field, is exposed to high levels of cosmic radiation. This ionising radiation field is deleterious to the survival of

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The Responses of the Black Fungus Cryomyces Antarcticus to High Doses of Accelerated Helium Ions Radiation within Martian Regolith Simulants and Their Relevance for Mars

Study of the impact of accelerated He ions as a component of the galactic cosmic rays on the black fungus C. antarcticus and two Martian regolith simulants suggests that viable Earth-like microorganisms can be preserved in the dormant state in the near-surface scenario for approximately 322.000 and 110.000 Earth years.

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Results showed that Cryomyces antarcticus survived in a metabolically active state when subjected to high doses of Fe ions and was able to repair eventual DNA damages, implying that some terrestrial life forms can withstand prolonged exposure to space-relevant ion radiation.

From the Top of Martian Olympus to Deep Craters and Beneath: Mars Radiation Environment Under Different Atmospheric and Regolith Depths

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This project is concerned with estimating the probability of bacteria being able to survive beneath the surface of Mars, given the harsh environmental conditions which exist there. To make such an

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Jupiter’s moon Europa, which is thought to possess a large liquid water ocean beneath its icy crust, is one of the most compelling targets in the search for life beyond Earth. Its geologically young

Survivability of Soil and Permafrost Microbial Communities after Irradiation with Accelerated Electrons under Simulated Martian and Open Space Conditions

One of the prior current astrobiological tasks is revealing the limits of microbial resistance to extraterrestrial conditions. Much attention is paid to ionizing radiation, since it can prevent the
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