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Beneath the icy shell encasing Enceladus, a small icy moon of Saturn, a global ocean of liquid water ejects geyser-like plumes into space through fissures in the ice, making it an attractive place to investigate habitability and to search…

地球与行星天体物理 · 物理学 2020-08-11 Wanying Kang , Suyash Bire , Jean-Michel Campin , Christophe Sotin , Christopher German , Andreas Thurnherr , John Marshall

Enceladus is believed to have a saltwater global ocean with a mean depth of at least 30~km, heated from below at the ocean-core interface and cooled at the top, where the ocean loses heat to the icy lithosphere above. This scenario suggests…

地球与行星天体物理 · 物理学 2021-03-30 Ana H. Lobo , Andrew F. Thompson , Steven D. Vance , Saikiran Tharimena

Ultra high energy neutrinos may be observed in ice by the emission of acoustic signals. The SPATS detector has investigated the possibility of observing GZK-neutrinos in the clear ice near the South Pole at the IceCube detector site. To…

天体物理仪器与方法 · 物理学 2016-08-18 K. Helbing , R. Hoffmann , U. Naumann , D. Eliseev , D. Heinen , F. Scholz , C. Wiebusch , S. Zierke

Enceladus is a primary target for astrobiology due to the $\rm H_2O$ plume ejecta measured by the Cassini spacecraft and the inferred subsurface ocean sustained by tidal heating. Sourcing the plumes via a direct connection from the ocean to…

Several planetary satellites apparently have subsurface seas that are of great interest for, among other reasons, their possible habitability. The geologically diverse Saturnian satellite Enceladus vigorously vents liquid water and vapor…

地球与行星天体物理 · 物理学 2015-09-28 P. C. Thomas , R. Tajeddine , M. S. Tiscareno , J. A. Burns , J. Joseph , T. J. Loredo , P. Helfenstein , C. Porco

Enceladus, a small icy moon of Saturn, is one of the most remarkable bodies in the solar system. This moon is a geologically active object, and despite the lower temperatures on most of its surface, the geothermally heated south polar…

地球与行星天体物理 · 物理学 2014-11-04 A. Bergantini , S. Pilling , B. G. Nair , N. J. Mason , H. J. Fraser

The 'Ocean Worlds' of our Solar System are covered with ice, hence the water is not directly accessible. Using melting probe technology is one of the promising technological approaches to reach those scientifically interesting water…

流体动力学 · 物理学 2018-08-01 Kai Schüller , Julia Kowalski

The detection of outgassing water vapor from Enceladus is one of the great breakthroughs of the Cassini mission. The fate of this water once ionized has been widely studied; here we investigate the effects of purely neutral-neutral…

天体物理学 · 物理学 2015-05-13 Alison J. Farmer

Over the south pole of Enceladus, an icy moon of Saturn, geysers eject water into space in a striped pattern, making Enceladus one of the most attractive destinations in the search for extraterrestrial life. We explore the ocean dynamics…

地球与行星天体物理 · 物理学 2022-06-01 Wanying Kang , John Marshall , Tushar Mittal , Suyash Bire

Recent planetary data and geophysical modelling suggest that hydrothermal activity is ongoing under the ice crust of Enceladus, one of Saturn's moons. According to these models, hydrothermal flow in the porous, rocky core of the satellite…

地球物理 · 物理学 2020-06-23 Thomas Le Reun , Duncan R. Hewitt

Saturn's diffuse E ring consists of many tiny (micron and sub-micron) grains of water ice distributed between the orbits of Mimas and Titan. Various gravitational and non-gravitational forces perturb these particles' orbits, causing the…

地球与行星天体物理 · 物理学 2015-06-03 M. M. Hedman , J. A. Burns , D. P. Hamilton , M. R. Showalter

The interior of Enceladus, a medium sized icy moon of Saturn hosts hydrothermal activity and exhibits tidal heating and related geyser-like activity. There are major disagreements in the existing literature on the porosity of the interior,…

地球与行星天体物理 · 物理学 2023-08-14 Imre Kisvárdai , Bernadett D. Pál , Ákos Kereszturi

At the solar equinox in August 2009, the Composite Infrared Spectrometer (CIRS) onboard Cassini showed the lowest Saturn's ring temperatures ever observed. Detailed radiative transfer models show that the observed equinox temperatures of…

地球与行星天体物理 · 物理学 2015-09-01 Ryuji Morishima , Linda Spilker , Shawn Brooks , Estelle Deau , Stu Pilorz

Enceladus, an icy moon of Saturn, possesses an internal water ocean and jets expelling ocean material into space. Cassini investigations indicated that the subsurface ocean could be a habitable environment having a complex interaction with…

Context. The origin of water in the stratospheres of Giant Planets has been an outstanding question ever since its first detection by ISO some 20 years ago. Water can originate from interplanetary dust particles, icy rings and satellites…

Enceladus is a prime target in the search for life in our solar system, having an active plume likely connected to a large liquid water subsurface ocean. Using the sensitive NIRSpec instrument onboard JWST, we searched for organic compounds…

Saturn raises a time-dependent tide on its small moon Enceladus, due to the eccentricity of the orbit. As shown in a companion paper (Goldreich et al.), the resulting tidal heating drives Enceladus into a limit cycle, in which its…

地球与行星天体物理 · 物理学 2025-03-05 Yoram Lithwick

The extraordinary activity at Enceladus' warm south pole indicates the presence of an internal global or local reservoir of liquid water beneath the surface. While Tyler (2009, 2011) has suggested that the geological activity and the large…

地球与行星天体物理 · 物理学 2016-01-27 Rose-Marie Baland , Marie Yseboodt , Tim Van Hoolst

The ice shell on Enceladus, an icy moon of Saturn, exhibits strong asymmetry between the northern and southern hemispheres, with all known geysers concentrated over the south pole, even though the expected pattern of tidal-rotational…

地球与行星天体物理 · 物理学 2022-05-25 Wanying Kang , Glenn Flierl

The geologically active south pole of Enceladus generates a plume of micron-sized particles, which likely form Saturn's tenuous E-ring extending from the orbit of Mimas to Titan. Interactions between these particles and satellites have been…

地球与行星天体物理 · 物理学 2022-05-24 Naoyuki Hirata , Hideaki Miyamoto , Adam P. Showman
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