scholarly journals A Case for a Small to Negligible Influence of Dust Charging on the Ionization Balance in the Coma of Comet 67P

2021 ◽  
Vol 2 (4) ◽  
pp. 156
Author(s):  
E. Vigren ◽  
A. I. Eriksson ◽  
F. L. Johansson ◽  
R. Marschall ◽  
M. Morooka ◽  
...  
Keyword(s):  
Ionization Balance ◽  
Dust Charging ◽  
Comet 67P ◽  
Negligible Influence

scholarly journals Blocks Size Frequency Distribution in the Enceladus Tiger Stripes Area: Implications on Their Formative Processes

Universe ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 82
Author(s):  
Maurizio Pajola ◽  
Alice Lucchetti ◽  
Lara Senter ◽  
Gabriele Cremonese
Keyword(s):  
Frequency Distribution ◽  
Power Law ◽  
Size Frequency Distribution ◽  
Surface Stresses ◽  
Size Frequency ◽  
The One ◽  
Power Law Index ◽  
Comet 67P ◽  
South Polar ◽  
Degree Of Fragmentation

We study the size frequency distribution of the blocks located in the deeply fractured, geologically active Enceladus South Polar Terrain with the aim to suggest their formative mechanisms. Through the Cassini ISS images, we identify ~17,000 blocks with sizes ranging from ~25 m to 366 m, and located at different distances from the Damascus, Baghdad and Cairo Sulci. On all counts and for both Damascus and Baghdad cases, the power-law fitting curve has an index that is similar to the one obtained on the deeply fractured, actively sublimating Hathor cliff on comet 67P/Churyumov-Gerasimenko, where several non-dislodged blocks are observed. This suggests that as for 67P, sublimation and surface stresses favor similar fractures development in the Enceladus icy matrix, hence resulting in comparable block disaggregation. A steeper power-law index for Cairo counts may suggest a higher degree of fragmentation, which could be the result of localized, stronger tectonic disruption of lithospheric ice. Eventually, we show that the smallest blocks identified are located from tens of m to 20–25 km from the Sulci fissures, while the largest blocks are found closer to the tiger stripes. This result supports the ejection hypothesis mechanism as the possible source of blocks.

scholarly journals Author Correction: Far-ultraviolet aurora identified at comet 67P/Churyumov-Gerasimenko

2021 ◽  
Author(s):  
M. Galand ◽  
P. D. Feldman ◽  
D. Bockelée-Morvan ◽  
N. Biver ◽  
Y.-C. Cheng ◽  
...  
Keyword(s):  
Far Ultraviolet ◽  
Comet 67P

scholarly journals ORIGIN OF MOLECULAR OXYGEN IN COMET 67P/CHURYUMOV–GERASIMENKO

2016 ◽  
Vol 823 (2) ◽  
pp. L41 ◽  
Author(s):  
O. Mousis ◽  
T. Ronnet ◽  
B. Brugger ◽  
O. Ozgurel ◽  
F. Pauzat ◽  
...  
Keyword(s):  
Molecular Oxygen ◽  
Comet 67P

The ionization balance of the atmosphere

1950 ◽  
Vol 1 (1) ◽  
pp. 13-25 ◽  
Author(s):  
Victor F. Hess ◽  
Roger P. Vancour
Keyword(s):  
Ionization Balance

Dust Charging and Dynamics in Tokamaks

2011 ◽  
Vol 13 (1) ◽  
pp. 11-14 ◽  
Author(s):  
Yukihiro Tomita ◽  
Gakushi Kawamura ◽  
Zhihui Huang ◽  
Yudong Pan ◽  
Longwen Yan
Keyword(s):  
Dust Charging

scholarly journals Morphology and dynamics of the jets of comet 67P/Churyumov-Gerasimenko: Early-phase development

2015 ◽  
Vol 583 ◽  
pp. A11 ◽  
Author(s):  
Z.-Y. Lin ◽  
W.-H. Ip ◽  
I.-L. Lai ◽  
J.-C. Lee ◽  
J.-B. Vincent ◽  
...  
Keyword(s):  
Early Phase ◽  
Phase Development ◽  
Comet 67P

Ionization Balance and Data Surveys

2009 ◽  
Author(s):  
S. D. Loch ◽  
C. P. Ballance ◽  
J. M. Munoz Burgos ◽  
M. Fogle ◽  
J. A. Ludlow ◽  
...  
Keyword(s):  
Ionization Balance

scholarly journals Opposition effect on comet 67P/Churyumov-Gerasimenko using Rosetta-OSIRIS images

2017 ◽  
Vol 599 ◽  
pp. A11 ◽  
Author(s):  
N. Masoumzadeh ◽  
N. Oklay ◽  
L. Kolokolova ◽  
H. Sierks ◽  
S. Fornasier ◽  
...  
Keyword(s):  
Opposition Effect ◽  
Comet 67P
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