M
Mark R. Showalter
Researcher at Search for extraterrestrial intelligence
Publications - 67
Citations - 3727
Mark R. Showalter is an academic researcher from Search for extraterrestrial intelligence. The author has contributed to research in topics: Rings of Saturn & Saturn. The author has an hindex of 32, co-authored 67 publications receiving 3499 citations. Previous affiliations of Mark R. Showalter include Stanford University & Ames Research Center.
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Journal ArticleDOI
Voyager 2 at neptune: imaging science results.
Bradford A. Smith,L. A. Soderblom,Don Banfield,C. D. Barnet,Alexander T. Basilevsky,Reta Beebe,K. Bollinger,Joseph M. Boyce,André Brahic,G. A. Briggs,Robert H. Brown,Christopher F. Chyba,Stewart A. Collins,Tim R. Colvin,A. F. Cook,David Crisp,Steven K. Croft,Dale P. Cruikshank,Jeffrey N. Cuzzi,G. E. Danielson,Merton E. Davies,E. De Jong,Luke Dones,D. Godfrey,Jay D. Goguen,I. Grenier,V. R. Haemmerle,Heidi B. Hammel,Candice Hansen,c. P. Helfenstein,Chris Howell,G. E. Hunt,Andrew P. Ingersoll,Torrence V. Johnson,Jeffrey S. Kargel,R. L. Kirk,D. I. Kuehn,Sanjay S. Limaye,Harold Masursky,Alfred S. McEwen,David Morrison,Tobias Owen,William M. Owen,James B. Pollack,Carolyn C. Porco,K. Rages,P. Rogers,D. Rudy,C. Sagan,Joel M. Schwartz,Eugene M. Shoemaker,Mark R. Showalter,Bruno Sicardy,Damon P. Simonelli,John R. Spencer,Lawrence A. Sromovsky,Carol R. Stoker,Robert G. Strom,Verner E. Suomi,S. P. Synott,Richard J. Terrile,Peter C. Thomas,W. R. Thompson,A. Verbiscer,J. Veverka +64 more
TL;DR: New Voyager 2 images of Neptune reveal a windy planet characterized by bright clouds of methane ice suspended in an exceptionally clear atmosphere above a lower deck of hydrogen sulfide or ammonia ices, dominated by a large anticyclonic storm system that has been named the Great Dark Spot.
Book ChapterDOI
Exploring The Saturn System In The Thermal Infrared: The Composite Infrared Spectrometer
F. M. Flasar,V. G. Kunde,Mian M. Abbas,R. K. Achterberg,Peter A. R. Ade,Antonella Barucci,B. Bezard,Gordon L. Bjoraker,John C. Brasunas,S. B. Calcutt,R. W. Carlson,C. J. Cesarsky,Barney J. Conrath,Angioletta Coradini,Régis Courtin,Athena Coustenis,S. Edberg,Scott G. Edgington,Chiara Ferrari,Thierry Fouchet,D. Gautier,Peter J. Gierasch,K. Grossman,Patrick G. J. Irwin,D. E. Jennings,E. Lellouch,A. A. Mamoutkine,A. Marten,J. P. Meyer,Conor A. Nixon,Glenn S. Orton,T. C. Owen,John C. Pearl,Renée Prangé,François Raulin,Peter L. Read,Paul N. Romani,Robert E. Samuelson,M. E. Segura,Mark R. Showalter,Amy A. Simon-Miller,M. D. Smith,John R. Spencer,Linda Spilker,Fredric W. Taylor +44 more
TL;DR: The Composite Infrared Spectrometer (CIRS) is a remote-sensing Fourier transform spectrometer on the Cassini orbiter that measures thermal radiation over two decades in wavenumber, with a spectral resolution that can be set from 0.5 to 15.5 cm− 1.
Journal ArticleDOI
The formation of Jupiter's faint rings
Joseph A. Burns,Mark R. Showalter,Douglas P. Hamilton,Philip D. Nicholson,Imke de Pater,Maureen E. Ockert-Bell,Peter C. Thomas +6 more
TL;DR: Observations by the Galileo spacecraft and the Keck telescope showed that Jupiter's outermost (gossamer) ring is actually two rings circumscribed by the orbits of the small satellites Amalthea and Thebe, suggesting that faint rings may accompany all small inner satellites of the other jovian planets.
Journal ArticleDOI
Temperatures, Winds, and Composition in the Saturnian System
F. M. Flasar,R. K. Achterberg,Barney J. Conrath,John C. Pearl,Gordon L. Bjoraker,D. E. Jennings,Paul N. Romani,Amy A. Simon-Miller,V. G. Kunde,Conor A. Nixon,Bruno Bézard,Glenn S. Orton,Linda Spilker,John R. Spencer,Patrick G. J. Irwin,Nicholas A Teanby,Tobias Owen,John C. Brasunas,M. E. Segura,Ronald Carlson,A. A. Mamoutkine,Peter J. Gierasch,Paul J. Schinder,Mark R. Showalter,C. Ferrari,Antonella Barucci,Regis Courtin,Athena Coustenis,Thierry Fouchet,Daniel Gautier,Emmanuel Lellouch,A. Marten,R. Prangé,Darrell F. Strobel,S. B. Calcutt,Peter L. Read,Fredric W. Taylor,Neil Bowles,Robert E. Samuelson,Mian M. Abbas,François Raulin,Peter A. R. Ade,Scott G. Edgington,S. Pilorz,B. Wallis,E. H. Wishnow +45 more
TL;DR: Diurnal surface temperature variations on Phoebe suggest a more porous regolith than on the jovian satellites, and Saturn's ring temperatures have radial variations down to the smallest scale resolved (100 kilometers).
Journal ArticleDOI
Structure and particle properties of Saturn's E Ring
TL;DR: In this article, a simple power-law model is found to describe the ring's normal optical depth profile with orbital radius; this trend is departed from, however, near the density peak, where there emerges a 30-percent localized decrease in thickness.