Effect of irradiation on the surface of Pluto

Details Effect of irradiation on the surface of Pluto Effect of irradiation on the surface of Pluto

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989georl..16.1233j&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 16, Nov. 1989, p. 1233-1236.

Physics

23

Cosmic Rays, Ionizing Radiation, Planetary Surfaces, Pluto Atmosphere, Ultraviolet Absorption, Carbon Monoxide, Condensation, Solar System, Sulfur Dioxides, Water

Scientific paper

The surface of Pluto is exposed to cosmic ray particles which slowly alter the reflectance of the condensed methane and the UV absorved in the atmosphere may produce precipitates. Depending on the rates of the competing regolith processes and the rate of replenishment of the methane the surface can appear bright, 'red', or 'dark'. Here, the relevant laboratory data show that, in the absence of any local particle precipitation, the amount of darkening occurring in one orbit is small.

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