Journal cover Journal topic
Annales Geophysicae An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 1.585 IF 1.585
  • IF 5-year value: 1.698 IF 5-year
    1.698
  • CiteScore value: 1.62 CiteScore
    1.62
  • SNIP value: 0.820 SNIP 0.820
  • IPP value: 1.52 IPP 1.52
  • SJR value: 0.781 SJR 0.781
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 83 Scimago H
    index 83
  • h5-index value: 24 h5-index 24
ANGEO | Articles | Volume 37, issue 4
Ann. Geophys., 37, 455–470, 2019
https://doi.org/10.5194/angeo-37-455-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Ann. Geophys., 37, 455–470, 2019
https://doi.org/10.5194/angeo-37-455-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Regular paper 02 Jul 2019

Regular paper | 02 Jul 2019

Mercury's subsolar sodium exosphere: an ab initio calculation to interpret MASCS/UVVS observations from MESSENGER

Diana Gamborino et al.
Related authors  
Mass spectrometry of planetary exospheres at high relative velocity: direct comparison of open- and closed-source measurements
Stefan Meyer, Marek Tulej, and Peter Wurz
Geosci. Instrum. Method. Data Syst., 6, 1–8, https://doi.org/10.5194/gi-6-1-2017,https://doi.org/10.5194/gi-6-1-2017, 2017
Short summary
Cited articles  
Anderson, B. J., Johnson, C. L., Korth, H., Purucker, M. E., Winslow, R. M., Slavin, J. A., Solomon, S. C., McNutt Jr., R. L., Raines, J. M., and Zurbuchen, T. H.: The global magnetic field of Mercury from MESSENGER orbital observations, Science, 333, 1859–1862, https://doi.org/10.1126/science.1211001, 2011. a
Bishop, J. and Chamberlain, J. W.: Radiation pressure dynamics in planetary exospheres: A “natural” framework, Icarus, 81, 145–163, https://doi.org/10.1016/0019-1035(89)90131-0, 1989. a, b, c, d
Borin, P., Cremonese, G., Marzari, F., Bruno, M., and Marchi, S.: Statistical analysis of micrometeorites flux on Mercury, Astron. Astrophys., 503, 259–264, https://doi.org/10.1051/0004-6361/200912080, 2009. a
Borin, P., Bruno, M., Cremonese, G., and Marzari, F.: Estimate of the neutral atoms' contribution to the Mercury exosphere caused by a new flux of micrometeoroids, Astron. Astrophys., 517, A89, https://doi.org/10.1051/0004-6361/201014312, 2010. a
Broadfoot, A. L., Shemansky, D. E., and Kumar, S.: Mariner 10 – Mercury atmosphere, Geophys. Res. Lett., 3, 577–580. https://doi.org/10.1029/GL003i010p00577, 1976. a
Publications Copernicus
Download
Short summary
We propose that the temperature of the Na exosphere of Mercury near the subsolar point is not at high as proposed in previous works. Using a numerical model and the appropriate energy distributions for each release mechanism, we can explain observations made by MESSENGER in April 2012. Our results show that close to the surface, the dominant release mechanism for Na is evaporation due to the solar irradiation, and at high altitudes the best candidate is the release by micro-meteoroid impacts.
We propose that the temperature of the Na exosphere of Mercury near the subsolar point is not at...
Citation