Results 21 to 30 of about 6,063 (251)

Photoionization Loss of Mercury's Sodium Exosphere: Seasonal Observations by MESSENGER and the THEMIS Telescope. [PDF]

open access: yesGeophys Res Lett, 2021
We present the first investigation and quantification of the photoionization loss process to Mercury's sodium exosphere from spacecraft and ground‐based observations.
Jasinski JM   +8 more
europepmc   +2 more sources

Processes that Promote and Deplete the Exosphere of Mercury [PDF]

open access: yesSpace Science Reviews, 2007
It has been speculated that the composition of the exosphere is related to the composition of Mercury’s crustal materials. If this relationship is true, then inferences regarding the bulk chemistry of the planet might be made from a thorough exospheric study.
Killen, Rosemary   +10 more
openaire   +3 more sources

Exosphere-mediated migration of volatile species on airless bodies across the solar system [PDF]

open access: yesIcarus (New York, N.Y. 1962), 2022
Surface-bound exospheres facilitate volatile migration across the surfaces of nearly airless bodies. However, such transport requires that the body can both form and retain an exosphere.
J. Steckloff   +4 more
semanticscholar   +1 more source

Short‐term observations of double‐peaked Na emission from Mercury's exosphere

open access: yesGeophysical Research Letters, 2017
We report the analysis of short‐term ground‐based observations of the exospheric Na emission (D1 and D2 lines) from Mercury, which was characterized by two high‐latitude peaks confined near the magnetospheric cusp footprints. During a series of scheduled
S. Massetti   +5 more
doaj   +2 more sources

Observation of Helium in Mercury's Exosphere by PHEBUS on Bepi‐Colombo

open access: yesJournal of Geophysical Research - Planets, 2023
On 1 October 2021, Bepi‐Colombo performed its first flyby of Mercury. During the maneuver, the short wavelength channel (55–155 nm) of “Probing the Hermean Exosphere by UV Spectroscopy” (PHEBUS) was activated for a total duration of 1 hr.
E. Quémerais   +14 more
semanticscholar   +1 more source

How Does the Thermal Environment Affect the Exosphere/Surface Interface at Mercury?

open access: yesThe Planetary Science Journal, 2023
The fate of Mercury’s exospheric volatiles and, in a lesser way, of the refractory particles absorbed in the first few centimeters of the surface both depend highly on the temperature profile with depth and its diurnal variation. In this paper, we review
F. Leblanc   +12 more
semanticscholar   +1 more source

3D Monte-Carlo simulation of Ganymede’s water exosphere

open access: yesIcarus (New York, N.Y. 1962), 2021
In this paper we present ab initio 3D Monte-Carlo simulations of Ganymede’s surface sputtered and sublimated H2O exosphere. As inputs, we include surface water content maps and temperature distribution maps based on Galileo and Very Large Telescope (VLT)
A. Vorburger   +5 more
semanticscholar   +1 more source

The Evolution of a Spacecraft-Generated Lunar Exosphere. [PDF]

open access: yesJ Geophys Res Planets, 2020
Understanding how spacecraft alter planetary environments can offer important insights into key physical processes, as well as being critical to planning mission operations and observations.
Prem P   +3 more
europepmc   +2 more sources

Coronagraphic observations of the lunar sodium exosphere 2018–2019

open access: yesIcarus (New York, N.Y. 1962), 2021
Remote observations of the lunar sodium corona have been obtained with the Goddard Lunar Coronagraph located at the Winer Observatory in Sonoita, Arizona. We previously reported the results of observations in the spring, 2017, observing season (Killen et
R. Killen   +5 more
semanticscholar   +1 more source

Meteoroids as One of the Sources for Exosphere Formation on Airless Bodies in the Inner Solar System

open access: yesSpace Science Reviews, 2021
This manuscript represents a review on progress made over the past decade concerning our understanding of meteoroid bombardment on airless solar system bodies as one of the sources of the formation of their exospheres.
D. Janches   +7 more
semanticscholar   +1 more source

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