Search Results - "Colwell, J. E"

The composition and structure of the Enceladus plume by Hansen, C. J., Shemansky, D. E., Esposito, L. W., Stewart, A. I. F., Lewis, B. R., Colwell, J. E., Hendrix, A. R., West, R. A., Waite Jr, J. H., Teolis, B., Magee, B. A.

“…The Cassini Ultraviolet Imaging Spectrograph (UVIS) observed an occultation of the Sun by the water vapor plume at the south polar region of Saturn's moon…”
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Investigation of diurnal variability of water vapor in Enceladus' plume by the Cassini ultraviolet imaging spectrograph by Hansen, C. J., Esposito, L. W., Aye, K.‐M., Colwell, J. E., Hendrix, A. R., Portyankina, G., Shemansky, D.

“…An occultation of ε Orionis by Enceladus' plume was observed with Enceladus at an orbital longitude near apoapsis in order to investigate whether water vapor…”
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Self-gravity wakes in Saturn's A ring measured by stellar occultations from Cassini by Colwell, J. E., Esposito, L. W., Sremčević, M.

“…An azimuthal brightness asymmetry in Saturn's A ring is caused by ephemeral agglomerations that continually form under the mutual gravity of the ring particles…”
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Lunar surface: Dust dynamics and regolith mechanics by Colwell, J. E., Batiste, S., Horányi, M., Robertson, S., Sture, S.

“…The lunar surface is characterized by a collisionally evolved regolith resulting from meteoroid bombardment. This lunar soil consists of highly angular…”
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Evolving View of Saturn's Dynamic Rings by Cuzzi, J.N, Burns, J.A, Charnoz, S, Clark, R.N, Colwell, J.E, Dones, L, Esposito, L.W, Filacchione, G, French, R.G, Hedman, M.M, Kempf, S, Marouf, E.A, Murray, C.D, Nicholson, P.D, Porco, C.C, Schmidt, J, Showalter, M.R, Spilker, L.J, Spitale, J.N, Srama, R, Sremčević, M, Tiscareno, M.S, Weiss, J

“…We review our understanding of Saturn's rings after nearly 6 years of observations by the Cassini spacecraft. Saturn's rings are composed mostly of water ice…”
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Water vapour jets inside the plume of gas leaving Enceladus by Tian, F, Esposito, L. W, Wallis, B, Hansen, C. J, Stewart, A. I. F, Pryor, W, Meinke, B, Colwell, J. E, Hendrix, A. R, Larsen, K

“…A plume of water vapour escapes from fissures crossing the south polar region of the Saturnian moon Enceladus. Tidal deformation of a thin surface crust above…”
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Experimental investigations on photoelectric and triboelectric charging of dust by Sickafoose, A. A., Colwell, J. E., Horányi, M., Robertson, S.

“…Experiments are performed pertaining to the charging of single dust particles in space due to three effects: (1) photoemission, (2) the collection of electrons…”
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Self-gravity wakes and radial structure of Saturn's B ring by Colwell, J.E., Esposito, L.W., Sremčević, M., Stewart, G.R., McClintock, W.E.

“…We analyze stellar occultations by Saturn's rings observed with the Cassini Ultraviolet Imaging Spectrograph and find large variations in the apparent normal…”
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Experimental levitation of dust grains in a plasma sheath by Sickafoose, A. A., Colwell, J. E., Horányi, M., Robertson, S.

“…Dust grains have been observed to levitate above the surface of the Moon and as spokes in Saturn's rings. In order to gain a better understanding of these…”
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Photoelectric charging of dust particles in vacuum by Sickafoose, A A, Colwell, J E, Horányi, M, Robertson, S

“…Photoelectric charging measurements are presented of dust grains in vacuum for isolated grains and for grains near a photoemissive surface. Isolated grains…”
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Tenuous ring formation by the capture of interplanetary dust at Saturn by Mitchell, C. J., Colwell, J. E., Horányi, M.

“…We examine the capture of interplanetary dust particles by Saturn using both a simple two‐dimensional code as well as a three‐dimensional code with more…”
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Cassini CIRS and ISS opposition effects of Saturn’s rings – I. C ring narrow or broad surge? by Déau, E, Dones, L, Spilker, L, Flandes, A, Baillié, K, Pilorz, S, Showalter, M, El Moutamid, M, Colwell, J E

“…Abstract We focus on the thermal and optical opposition effects of Saturn’s C ring seen by Cassini CIRS (Composite InfraRed Spectrometer) at 15.7 ${\mu}$m and…”
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Density waves in Cassini UVIS stellar occultations 1. The Cassini Division by COLWELL, J. E, COONEY, J. H, ESPOSITO, L. W, SREMCEVIC, M

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Using Landsat TM data to estimate carbon release from burned biomass in an Alaskan spruce forest complex by Michalek, J. L., French, N. H. F., Kasischke, E. S., Johnson, R. D., Colwell, J. E.

“…Fire disturbance in boreal forests can release carbon to the atmosphere stored in both the aboveground vegetation and the organic soil layer. Estimating…”
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SIGNATURES OF RECENT ASTEROID DISRUPTIONS IN THE FORMATION AND EVOLUTION OF SOLAR SYSTEM DUST BANDS by Kehoe, A. J. Espy, Kehoe, T. J. J., Colwell, J. E., Dermott, S. F.

“…ABSTRACT We have performed detailed dynamical modeling of the structure of a faint dust band observed in coadded InfraRed Astronomical Satellite data at an…”
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Saturn's Rings: pre-Cassini Status and Mission Goals by Cuzzi, J N, Colwell, JE, Esposito, L W, Porco, C C, Murray, C D, Nicholson, P D, Spilker, L J, Marouf, E A, French, R C, Rappaport, N, Muhleman, D

“…Theoretical and observational progress in studies of Saturn's ring system since the mid-1980s is reviewed, focussing on advances in configuration and dynamics,…”
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Low velocity impacts into dust: results from the COLLIDE-2 microgravity experiment by Colwell, Joshua E.

“…We present the results of the second flight of the Collisions Into Dust Experiment (COLLIDE-2), a space shuttle payload that performs six impact experiments…”
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Saturn’s F Ring core: Calm in the midst of chaos by Cuzzi, J.N., Whizin, A.D., Hogan, R.C., Dobrovolskis, A.R., Dones, L., Showalter, M.R., Colwell, J.E., Scargle, J.D.

“…•Saturn’s F Ring core exists where moonlet perturbations are strongly destabilizing.•Our theory for its stability combines numerical modeling and a simple…”
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Capture of Interplanetary and Interstellar Dust by the Jovian Magnetosphere by Colwell, Joshua E., Horanyi, Mihály, Grün, Eberhard

“…Interplanetary and interstellar dust grains entering Jupiter's magnetosphere form a detectable diffuse faint ring of exogenic material. This ring is composed…”
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Aerodynamical sticking of dust aggregates by Wurm, G, Blum, J, Colwell, J E

“…We present results of collision experiments of a dense beam of aggregated 1.2 microm SiO2 particles entrained in a gas flow with metal targets of different…”
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