J
Joshua Colwell
Researcher at University of Central Florida
Publications - 174
Citations - 5312
Joshua Colwell is an academic researcher from University of Central Florida. The author has contributed to research in topics: Rings of Saturn & Saturn. The author has an hindex of 38, co-authored 169 publications receiving 4917 citations. Previous affiliations of Joshua Colwell include University of Colorado Boulder & NASA Headquarters.
Papers
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Journal ArticleDOI
Enceladus' Water Vapor Plume
Candice Hansen,Larry W. Esposito,A. I. F. Stewart,Joshua Colwell,Amanda R. Hendrix,Wayne Pryor,Donald E. Shemansky,Robert A. West +7 more
TL;DR: The Cassini spacecraft flew close to Saturn's small moon Enceladus three times in 2005 and observed stellar occultations on two flybys and confirmed the existence, composition, and regionally confined nature of a water vapor plume in the south polar region of Ence Gladus.
Journal ArticleDOI
Lunar surface: Dust dynamics and regolith mechanics
TL;DR: In this article, the authors discuss the mechanical response of the regolith to anticipated exploration activities and review the plasma environment near the lunar surface and the observations, models, and dynamics of charged lunar dust.
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The Cassini Ultraviolet Imaging Spectrograph Investigation
Larry W. Esposito,Charles A. Barth,Joshua Colwell,George M. Lawrence,William E. McClintock,A. Ian F. Stewart,H. Uwe Keller,A. Korth,Hans Lauche,Michel C. Festou,Arthur L. Lane,Candice Hansen,Justin N. Maki,Robert A. West,Herbert Jahn,Ralf Reulke,Kerstin Warlich,Donald E. Shemansky,Yuk L. Yung +18 more
TL;DR: The Cassini Ultraviolet Imaging Spectrograph (UVIS) as discussed by the authors is part of the remote sensing payload of the Cassini orbiter spacecraft and has two spectrographic channels that provide images and spectra covering the ranges from 56 to 118 nm and 110 to 190 nm.
Journal ArticleDOI
The composition and structure of the Enceladus plume
Candice Hansen,Donald E. Shemansky,Larry W. Esposito,A. I. F. Stewart,Brenton Lewis,Joshua Colwell,Amanda R. Hendrix,Robert A. West,J. H. Waite,B. D. Teolis,Brian Magee +10 more
TL;DR: In this paper, the authors observed an occultation of the Sun by the water vapor plume at the south polar region of Saturn's moon Enceladus and inferred the inferred rate of water vapor injection into Saturn's magnetosphere is ∼200 kg/s.
Journal ArticleDOI
Accretion in the Edgeworth-Kuiper Belt: Forming 100-1000 KM Radius Bodies at 30 AU and Beyond.
S. Alan Stern,Joshua Colwell +1 more
TL;DR: In this paper, the authors employ a time-dependent collisional evolution code to study the conditions under which the 50{200 km radius Edgeworth-Kuiper Objects (EKOs) in the region between 30 and 50 AU were formed.