The brightness of Jupiter's satellite Io following emergence from eclipse - Selected observations, 1981-1989

Details The brightness of Jupiter's satellite Io following emergence from eclipse - Selected observations, 1981-1989 The brightness of Jupiter's satellite Io following emergence from eclipse - Selected observations, 1981-1989

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993icar..101..223n&link_type=abstract

Icarus (ISSN 0019-1035), vol. 101, no. 2, p. 223-233.

Computer Science

7

Brightness, Eclipses, Io, Satellite Atmospheres, Sulfur Dioxides, Jupiter, Satellites, Io, Brightness, Eclipse, Condensation, Frost, Sulfur Dioxide, Thickness, Energy, Source, Earth-Based Observations, Ccd Methods, Procedure, Comparisons, Europa, Callisto, Ganymede, Hypotheses, Reflectance, Optical Properties, Sublimation, Timescale, Insolation

Scientific paper

Io's brightness was monitored following emergence from eclipse by Jupiter on 14 occasions during the Jupiter apparitions from 1981 to 1989 and no instance is found of what has been called posteclipse brightening. If all the observations are averaged, a 2 percent effect cannot be ruled out; however, this effect is also the size of the rms errors of the summed data set. If condensation followed by sublimation of SO2 frost is hypothesized to be the mechanism which causes posteclipse brightening, then solar insolation alone may not be sufficient to remove an optically thick layer of SO2 frost in the time required to conform with the positive reports of posteclipse brightening in the literature. An additional source of energy is required, such as warming caused by the impact of magnetospheric particles as they dissipate the energy of their motion into Io's surface.

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