Search Publications
The Multi-Temporal Database of Planetary Image Data (MUTED): A database to support the identification of surface changes and short-lived surface processes
Jaumann, R.; Hiesinger, H.; Erkeling, G. +3 more
Images of Mars taken by spacecraft in the last few decades indicate that the landscape has changed and that current processes are continuously changing the surface. The modifications of the landscape are caused by exogenic processes including eolian activity, mass movement, the growth and retreat of the polar caps, glacial processes and crater-for…
A simple model for understanding the DIM dust measurement at comet 67P/Churyumov-Gerasimenko
Flandes, Alberto; Krüger, Harald; Della Corte, Vincenzo +1 more
We present a simple model for gas and dust flow from 67P/Churyumov-Gerasimenko that can be used to understand the grain impact observed by the DIM instrument on Philae (Krüger et al., 2015). We show how model results when applied to the GIADA measurements (Rotundi et al., 2015; Della Corte et al., 2015) can be used, in conjunction with the results…
Origin of the backstreaming ions in a young Hot Flow Anomaly
Vaisberg, O. L.; Shuvalov, S. D.; Shestakov, A. Yu. +1 more
We analyze an event in front of the bow shock observed by Cluster spacecraft on 22.02.2006. This event has many attributes of Hot Flow Anomaly at early stage of development including strong upstream beam and disturbed magnetic profile with increased magnetic field at one or two sides as observed by 4 Cluster spacecraft. The angle between the magne…
Comparison of diffuse infrared and far-ultraviolet emission in the Large Magellanic Cloud: The data
Shalima, P.; Gogoi, Rupjyoti; Saikia, Gautam +1 more
Dust scattering is the main source of diffuse emission in the far-ultraviolet (FUV). For several locations in the Large Magellanic Cloud (LMC), Far Ultraviolet Spectroscopic Explorer (FUSE) satellite has observed diffuse radiation in the FUV with intensities ranging from 1000 to 3×105 photon units and diffuse fraction between 5% and 20%…
Ion energy distributions and densities in the plume of Enceladus
Omidi, Nojan; Waite, J. Hunter; Cravens, Thomas E. +2 more
Enceladus has a dynamic plume that is emitting gas, including water vapor, and dust. The gas is ionized by solar EUV radiation, charge exchange, and electron impact and extends throughout the inner magnetosphere of Saturn. The charge exchange collisions alter the plasma composition. Ice grains (dust) escape from the vicinity of Enceladus and form …
Planetary heat flow from shallow subsurface measurements: Mars
Hagermann, Axel; Cornwall, Marc
Planetary heat flow probes measure heat flow (depth-resolved temperature and thermal conductivity) to provide insight into the internal state of a planet. The probes have been utilized extensively on Earth, twice on the Moon, and once on the Surface of comet 67P-CG. Mars is an important target for heat flow measurement as heat flow is a critical p…
Comet 67P/Churyumov-Gerasimenko, location of pristine material?
Kossacki, Konrad J.
This work is intended to answer the question, whether on comet 67P/Churyumov-Gerasimenko pristine, not hardened material can be locally preserved close to the surface. Simulated is the thermally driven sintering of ice-dust grains underlying the dust mantle. Considered is the Ma'at region located at the north side of the small lobe Head. It is sho…
Probing the interstellar dust in galaxies over >10 Gyr of cosmic history
York, Donald G.; Kulkarni, Varsha P.; Welty, Daniel E. +3 more
Dust has a profound effect on the physics and chemistry of the interstellar gas in galaxies and on the appearance of galaxies. Understanding the cosmic evolution of dust with time is therefore crucial for understanding the evolution of galaxies. Despite the importance of interstellar dust, very little is known about its nature and composition in d…
Foreshock ions observed behind the Martian bow shock
Coates, A. J.; Lundin, R.; Yamauchi, M. +4 more
The Mars Express Analyzer of Space Plasmas and Energetic Atoms experiment contains ion and electron instruments for conducting plasma measurements. On January 23, 2012, during in-bound travel of Mars Express in the southern hemisphere of Mars from its dawn side toward periapsis at dusk, the plasma instruments measured foreshock-like ion beams exte…
Corrigendum to "Comet 67P/Churyumov-Gerasimenko, location of pristine material?" [Planet. Space Sci. 125 (2016) 96-104]
kossacki, Konrad J.
In this paper was investigated evolution of the material structure in selected locations on the nucleus of comet 67P/Churyumov-Gerasimenko. The shape of the surface was described by the shape model SHAP4s v1.0. The considered locations i.e. sectors of the surface were marked in Fig. 1.