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\begin{document}

\title{New Paths for Survivability of Organic Material in the Martian
Subsurface}



\author[1]{Wren Montgomery}%
\affil[1]{Imperial College London}%


\vspace{-1em}



  
  \date{June 14, 2024}


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\begin{abstract}
Recent space missions have identified organics, chlorinated and
non-chlorinated, on Mars. Understanding the origin, current state and
reactivity of this carbonaceous material is critical to efforts to
detect organic signatures of possible past life on Mars. Environmental
effects such as UV radiation, pressure, diagenesis, aqueous activity and
presence of perchlorates have been previously been assessed using analog
experiments. To this list, Fox, et al. adds and quantifies the effect of
galactic cosmic rays and solar winds on organic material on the surface
and in the near sub-surface of Mars. Their work, using laboratory analog
materials and radiation, shows that the same organic acids, formic and
oxalic acid, are produced after exposure equivalent to that over Martian
history at depths of less than 5 cm, independent of mineral matrix or
starting organic materials. These experiments suggest that planned
sub-surface exploration using the drill on the Rosalind Franklin Rover
(ExoMars) will sample organic material which has not been altered by
cosmic rays, although it may have been exposed to other environmental
factors such as water or salts.%
\end{abstract}%



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