Search Publications
Microscopy analysis of soils at the Phoenix landing site, Mars: Classification of soil particles and description of their optical and magnetic properties
Arvidson, R. E.; Morris, R. V.; Keller, H. U. +25 more
The optical microscope onboard the Phoenix spacecraft has returned color images (4 µm pixel-1) of soils that were delivered to and held on various substrates. A preliminary taxonomy of Phoenix soil particles, based on color, size, and shape, identifies the following particle types [generic names in brackets]: (1) reddish fines, mo…
Magnetic and optical properties of airborne dust and settling rates of dust at the Phoenix landing site
Morris, R. V.; Drube, L.; Leer, K. +11 more
The Magnetic Properties Experiment (referred to as iSweep or Caltarget) onboard the Phoenix lander was executed in the arctic region of Mars during the mission's 152 sols lifetime. The iSweep experiment involved periodic multispectral imaging of a series of permanent ring magnets. It was designed to attract airborne magnetic dust particles to cert…
Asymmetry in the Jovian auroral Lyman-α line profile due to thermospheric high-speed flow
Chaufray, J. -Y.; Clarke, J. T.; Waite, J. H. +1 more
The presence of a fast wind in the auroral region atmosphere of Jupiter has been detected from the Doppler shift in near-IR observations of H3+ emissions. The Doppler effect also modifies auroral resonance emission line shapes. We present a new radiative transfer equation for the hydrogen Lyman-α line in the presence of a hor…