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Detection of lithium in the exosphere of Mercury [PDF]

Nature Communications
Mercury’s exosphere contains various neutral species, including hydrogen, helium, sodium, potassium, calcium, magnesium, aluminum, iron, and manganese. Although lithium has been predicted to exist, it had not been detected until now. Here, we demonstrate
Daniel Schmid, Helmut Lammer, Alexey A. Berezhnoy, Fabian Weichbold, Manuel Scherf, Ali Varsani, Martin Volwerk, Cyril Simon-Wedlund, Wolfgang Baumjohann, Rumi Nakamura, Go Murakami, Ferdinand Plaschke   +11 more
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Solar wind erosion of lunar regolith is suppressed by surface morphology and regolith properties [PDF]

Communications Earth & Environment
Important aspects concerning the origin and formation of the Moon’s exosphere, its tenuous gas envelope, remain puzzling with uncertainties regarding the importance of different effects.
Johannes Brötzner, Herbert Biber, Paul Stefan Szabo, Noah Jäggi, Lea Fuchs, Andreas Nenning, Martina Fellinger, Gyula Nagy, Eduardo Pitthan, Daniel Primetzhofer, Andreas Mutzke, Richard Arthur Wilhelm, Peter Wurz, André Galli, Friedrich Aumayr   +14 more
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A transient enhancement of Mercury’s exosphere at extremely high altitudes inferred from pickup ions [PDF]

Nature Communications, 2020
Mercury has a global dayside exosphere that is very tenuous and does not extend far from the planet. Here, the authors show enhancement of neutral densities at high altitudes inferred from pickup ions that is most likely caused by the impact of a ...
Jamie M. Jasinski, Leonardo H. Regoli, Timothy A. Cassidy, Ryan M. Dewey, Jim M. Raines, James A. Slavin, Andrew J. Coates, Daniel J. Gershman, Tom A. Nordheim, Neil Murphy   +9 more
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Remote sensing of mercury sodium exospheric patterns in relation to particle precipitation and interplanetary magnetic field [PDF]

Scientific Reports
The ground-based solar telescope THEMIS performed several observations of Mercury’s sodium exosphere in years 2011–2013, when the MESSENGER spacecraft was orbiting around the planet. Typical two-peak exospheric patterns were frequently identified.
Stefano Orsini, Valeria Mangano, Anna Milillo, Alessandro Mura, Alessandro Aronica, Elisabetta De Angelis, Adrian Kazakov, Stefano Massetti, Martina Moroni, Rosanna Rispoli, Roberto Sordini, Christina Plainaki, Francois Leblanc   +12 more
doaj   +2 more sources

Interhemispheric ionosphere-plasmasphere system shows a high sensitivity to the exospheric neutral hydrogen density: a caution of the global reference atmospheric model hydrogen density

Frontiers in Astronomy and Space Sciences, 2023
This study explores the impact of the exosphere hydrogen (H) density on the ionosphere-plasmasphere system using a model whose key inputs are constrained by ionosphere observations at both ends of the magnetic field line with an L-value of 1.75 in the ...
Dmytro Kotov, Phil G. Richards, Maryna Reznychenko, Oleksandr Bogomaz, Oleksandr Bogomaz, Vladimír Truhlík, Susan Nossal, Edwin Mierkiewicz, Taras Zhivolup, Igor Domnin, Yoshizumi Miyoshi, Fuminori Tsuchiya, Atsushi Kumamoto, Yoshiya Kasahara, Masahiro Kitahara, Satoko Nakamura, Ayako Matsuoka, Iku Shinohara, Marc Hairston   +18 more
doaj   +1 more source

The Influence of Surface Binding Energy on Sputtering in Models of the Sodium Exosphere of Mercury

The Planetary Science Journal, 2022
We have simulated the sodium (Na) exosphere of Mercury to show how the exosphere is affected by the assumed surface binding energy (SBE) of Na in the sputtered component.
Rosemary M. Killen, Liam S. Morrissey, Matthew H. Burger, Ronald J. Vervack Jr., Orenthal J. Tucker, Daniel W. Savin   +5 more
doaj   +1 more source

The relation between the surface composition anomaly and distribution of the exosphere of Mercury

Earth, Planets and Space, 2023
In celestial bodies with tenuous collisionless atmospheres, such as Mercury, the spatial distribution of the exosphere is expected to reflect the surface composition.
Yudai Suzuki, Kazuo Yoshioka, Go Murakami, Ichiro Yoshikawa   +3 more
doaj   +1 more source

Exosphere - Bringing The Cloud Closer [PDF]

2020 IEEE/ACM International Workshop on Interoperability of Supercomputing and Cloud Technologies (SuperCompCloud), 2020
Exosphere provides researcher-friendly software for managing computing workloads on OpenStack cloud infrastructure. Exosphere is a user-friendly alternative to Horizon, the default OpenStack graphical interface. Exosphere can be used with most research cloud infrastructure, requiring near-zero custom integration work.
Pistorius, Julian L., Martin, Chris, Sudarshan, Sanjana, LeBauer, David S.   +3 more
openaire   +2 more sources

The Effect of the Thermosphere on Ionosphere Outflows

Frontiers in Astronomy and Space Sciences, 2021
The Naval Research Laboratory (NRL) Sami2 is Another Model of the Ionosphere (SAMI2) and Sami3 is Also a Model of the Ionosphere (SAMI3) ionosphere/plasmasphere codes have shown that thermosphere composition and winds significantly affect H+ outflows ...
J. Krall, J. D. Huba
doaj   +1 more source

Advances in Mass Spectrometers for Flyby Space Missions for the Analysis of Biosignatures and Other Complex Molecules

Universe, 2022
Spacecraft flybys provide access to the chemical composition of the gaseous envelope of the planetary object. Typical relative encounter velocities range from km/s to tens of km/s in flybys.
Rico G. Fausch, Janis A. Schertenleib, Peter Wurz   +2 more
doaj   +1 more source