Zobrazeno 1 - 10
of 178
pro vyhledávání: '"V. Pierrard"'
Publikováno v:
Annales Geophysicae, Vol 41, Pp 313-325 (2023)
Relativistic radiation belt electron observations from the Energetic Particle Telescope (EPT) on board the PROBA-V (Project for On-Board Autonomy and Vegetation) satellite are compared to those performed by the Magnetic Electron Ion Spectrometer (Mag
Externí odkaz:
https://doaj.org/article/a66f808115864f7596db41e161d3a8ae
Autor:
J.-F. Ripoll, V. Pierrard, G. S. Cunningham, X. Chu, K. A. Sorathia, D. P. Hartley, S. A. Thaller, V. G. Merkin, G. L. Delzanno, S. De Pascuale, A. Y. Ukhorskiy
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 10 (2023)
This review focusses strictly on existing plasma density models, including ionospheric source models, empirical density models, physics-based and machine-learning density models. This review is framed in the context of radiation belt physics and spac
Externí odkaz:
https://doaj.org/article/9e27abf551b44719b7dfb163e6e73416
Autor:
Daniel Verscharen, B. D. G. Chandran, E. Boella, J. Halekas, M. E. Innocenti, V. K. Jagarlamudi, A. Micera, V. Pierrard, Š. Štverák, I. Y. Vasko, M. Velli, P. L. Whittlesey
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
The electrons are an essential particle species in the solar wind. They often exhibit non-equilibrium features in their velocity distribution function. These include temperature anisotropies, tails (kurtosis), and reflectional asymmetries (skewness),
Externí odkaz:
https://doaj.org/article/67e5f15b2d1f4515923a19390328ae73
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 8 (2021)
The plasmapause marks the limit of the plasmasphere and is characterized by a sudden change in plasma density. This can influence the other regions of the magnetosphere, including due to different waves circulating inside and outside the plasmasphere
Externí odkaz:
https://doaj.org/article/64e7b128523c4abdaa02602f8a0a5cc9
Autor:
V. Pierrard, G. Lopez Rosson
Publikováno v:
Annales Geophysicae, Vol 34, Pp 75-84 (2016)
With the energetic particle telescope (EPT) performing with direct electron and proton discrimination on board the ESA satellite PROBA-V, we analyze the high-resolution measurements of the charged particle radiation environment at an altitude of 8
Externí odkaz:
https://doaj.org/article/c1b207ddf32246d9badce5515fca02c5
Publikováno v:
Annales Geophysicae, Vol 33, Pp 1271-1283 (2015)
Taking advantage of the Cluster satellite mission and especially the observations made by the instrument WHISPER to deduce the electron number density along the orbit of the satellites, we studied the relationships between the plasmapause position
Externí odkaz:
https://doaj.org/article/0270bfa17b6a45e0902e1bc05f8a68a0
Publikováno v:
Annales Geophysicae, Vol 28, Pp 849-859 (2010)
When flux enhancements of energetic electrons are produced as a consequence of geomagnetic storm occurrence, they tend to vanish gradually when the magnetic activity calms down and the fluxes decay to quiet-time levels. We use SAC-C and DEMETER lo
Externí odkaz:
https://doaj.org/article/fd5c966ecd7043c1b12a4b9fa1bec9cd
Autor:
S. Schäfer, K. H. Glassmeier, P. T. I. Eriksson, P. N. Mager, V. Pierrard, K. H. Fornaçon, L. G. Blomberg
Publikováno v:
Annales Geophysicae, Vol 26, Pp 1805-1817 (2008)
A case study of a poloidal ULF pulsation near the dayside plasmapause is presented based on Cluster observations of magnetic and electric fields. The pulsation is detected close to the magnetic equatorial plane at L shells L=[4.4, 4.6] and oscill
Externí odkaz:
https://doaj.org/article/8b87ba16ef7343fdac75eee2ada9a134
Publikováno v:
Annales Geophysicae, Vol 25, Pp 2195-2202 (2007)
The energization of ions, due to interaction with electromagnetic turbulence (i.e. wave-particle interactions), has an important influence on H+ and O+ ions outflows in the polar region. The effects of altitude and velocity dependent wave-particle
Externí odkaz:
https://doaj.org/article/71dbaf882e634febafab38109dcfd9f9
Publikováno v:
Annales Geophysicae, Vol 25, Pp 1011-1024 (2007)
Oscillating magnetic field lines are frequently observed by spacecraft in the terrestrial and other planetary magnetospheres. The CLUSTER mission is a very suitable tool to further study these Alfvén waves as the four CLUSTER spacecraft provide f
Externí odkaz:
https://doaj.org/article/fcce29c5dbd44d70982f7f66beaa3b64