MESSENGER Observations of the Composition of Mercury's Ionized Exosphere and Plasma Environment

@article{Zurbuchen2008MESSENGEROO,
  title={MESSENGER Observations of the Composition of Mercury's Ionized Exosphere and Plasma Environment},
  author={Thomas H. Zurbuchen and Jim M. Raines and G. Gloeckler and Stamatios M. Krimigis and James A. Slavin and Patrick L. Koehn and Rosemary M. Killen and Ann L. Sprague and Ralph L. McNutt and Sean C. Solomon},
  journal={Science},
  year={2008},
  volume={321},
  pages={90 - 92}
}
The region around Mercury is filled with ions that originate from interactions of the solar wind with Mercury's space environment and through ionization of its exosphere. The MESSENGER spacecraft's observations of Mercury's ionized exosphere during its first flyby yielded Na+, O+, and K+ abundances, consistent with expectations from observations of neutral species. There are increases in ions at a mass per charge (m/q) = 32 to 35, which we interpret to be S+ and H2S+, with (S+ + H2S+)/(Na+ + Mg… 
MESSENGER Investigations of the Plasma Environment at Mercury.
The region around Mercury is filled with ions that originate from interactions of the solar wind with Mercury’s space environment and through ionization of its exosphere. The MESSENGER spacecraft’s
MESSENGER Observations of the Spatial Distribution of Planetary Ions Near Mercury
TLDR
Global measurements by MESSENGER of the fluxes of heavy ions at Mercury, particularly sodium (Na+) and oxygen (O+), exhibit distinct maxima in the northern magnetic-cusp region, indicating that polar regions are important sources of Mercury's ionized exosphere, presumably through solar-wind sputtering near the poles.
MESSENGER observations of multiscale Kelvin‐Helmholtz vortices at Mercury
Observations by the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft in Mercury's magnetotail demonstrate for the first time that Na+ ions exert a dynamic
Distribution and compositional variations of plasma ions in Mercury's space environment: The first three Mercury years of MESSENGER observations
We have analyzed measurements of planetary ions near Mercury made by the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) Fast Imaging Plasma Spectrometer (FIPS) over the
Observations of interstellar helium pickup ions in the inner heliosphere
During the MESSENGER spacecraft's interplanetary trajectory to Mercury, the Fast Imaging Plasma Spectrometer (FIPS) measured the first helium pickup ion distributions at a heliocentric distance (R)
Quasi‐trapped ion and electron populations at Mercury
Mariner 10 and MESSENGER spacecraft observations have established that Mercury has an intrinsic magnetic field and magnetosphere. Following the March 2011 insertion of MESSENGER into orbit around
Electron‐stimulated desorption of silicates: A potential source for ions in Mercury's space environment
[1] The potential role of electron-stimulated desorption (ESD) in the formation of Mercury's exosphere has been examined. Experimental results involving electron irradiation of Na- and K-bearing
...
...

References

SHOWING 1-10 OF 17 REFERENCES
A quantitative model of the planetary Na + contribution to Mercury’s magnetosphere
Abstract. We examine the circulation of heavy ions of planetary origin within Mercury’s magnetosphere. Using single particle trajectory calculations, we focus on the dynamics of sodium ions, one of
Mercury's Magnetosphere After MESSENGER's First Flyby
TLDR
The magnetic field showed reconnection signatures in the form of flux transfer events, azimuthal rotations consistent with Kelvin-Helmholtz waves along the magnetopause, and extensive ultralow-frequency wave activity.
Evidence for Magnetospheric Effects on the Sodium Atmosphere of Mercury
Monochromatic images of Mercury at the sodium D2 emission line showed excess sodium emission in localized regions at high northern and southern latitudes and day-to-day global variations in the
Interaction of Mercury with the Solar Wind
Abstract We present the structure of the hermean magnetosphere obtained by a global three-dimensional MHD simulation. The magnetic field of Mercury is strong enough to form a permanent magnetosphere
Magnetic Field Observations near Mercury: Preliminary Results from Mariner 10
TLDR
The complete body of data favors the preliminary conclusion that Mercury has an intrinsic magnetic field, which represents a major scientific discovery in planetary magnetism and will have considerable impact on studies of the origin of the solar system.
Mercury's Exosphere: Observations During MESSENGER's First Mercury Flyby
During MESSENGER's first Mercury flyby, the Mercury Atmospheric and Surface Composition Spectrometer measured Mercury's exospheric emissions, including those from the antisunward sodium tail, calcium
Composition of quasi‐stationary solar wind flows from Ulysses/Solar Wind Ion Composition Spectrometer
Using improved, self-consistent analysis techniques, we determine the average solar wind charge state and elemental composition of nearly 40 ion species of He, C, N, O, Ne, Mg, Si, S, and Fe observed
The Structure of Mercury's Magnetic Field from MESSENGER's First Flyby
TLDR
During its first flyby of Mercury, the MESSENGER spacecraft measured the planet's near-equatorial magnetic field, consistent to within an estimated uncertainty of 10% with that observed near the equator by Mariner 10.
Comparison of Laboratory Emission Spectra with Mercury Telescopic Data
Abstract Thermal emission spectra from four locations on Mercury's surface are compared with three new laboratory emission spectra: two spinels (gahnite and magnetite) and one carbonaceous chondrite
...
...