Zobrazeno 1 - 10
of 163
pro vyhledávání: '"R. A. Frahm"'
Autor:
H. Madanian, N. Omidi, D. G. Sibeck, L. Andersson, R. Ramstad, S. Xu, J. R. Gruesbeck, S. J. Schwartz, R. A. Frahm, D. A. Brain, P. Kajdic, F. G. Eparvier, D. L. Mitchell, S. M. Curry
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 8, Pp n/a-n/a (2023)
Abstract The typical subsolar stand‐off distance of Mars' bow shock is of the order of a solar wind ion convective gyroradius, making it highly non‐planar to incident ions. Using spacecraft observations and a test particle model, we illustrate th
Externí odkaz:
https://doaj.org/article/26f2cea9c4bf4ba78a96f022a7362a44
Autor:
M. Yamauchi, Y. Futaana, A. Fedorov, R. A. Frahm, J. D. Winningham, E. Dubinin, R. Lundin, S. Barabash, M. Holmström, C. Mazelle, J.-A. Sauvaud, T. L. Zhang, W. Baumjohann, A. J. Coates, M. Fraenz
Publikováno v:
Annales Geophysicae, Vol 29, Pp 511-528 (2011)
Foreshock ions are compared between Venus and Mars at energies of 0.6~20 keV using the same ion instrument, the Ion Mass Analyser, on board both Venus Express and Mars Express. Venus Express often observes accelerated protons (2~6 times the solar
Externí odkaz:
https://doaj.org/article/83810d3b103c4f56a3778f420e2109b6
Autor:
E. M. Dubinin, M. Fraenz, J. Woch, E. Roussos, J. D. Winningham, R. A. Frahm, A. Coates, F. Leblanc, R. Lundin, S. Barabash
Publikováno v:
Annales Geophysicae, Vol 26, Pp 3511-3524 (2008)
Electrons with energy of ~40–80 eV measured by the instrument ASPERA-3 on Mars Express and MAG-ER onboard Mars Global Surveyor are used to trace an access of solar wind electrons into the Martian magnetosphere. Crustal magnetic fields create an
Externí odkaz:
https://doaj.org/article/e4f30a7fa9744f15b6851ef4e9395c2c
Publikováno v:
Annales Geophysicae, Vol 25, Pp 543-555 (2007)
We investigate particle and fields data during a conjunction of the Polar and Cluster spacecraft. This conjunction occurs near the dayside cusp boundary layer when a dayside inverted-V was observed in the particle data of both satellites. Electron
Externí odkaz:
https://doaj.org/article/bc9c2b16fa954ef0a046fdb126b8d049
Publikováno v:
Geophysical Research Letters. 48
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::351e68f18598beb95c9ffb7d4113e3ce
https://doi.org/10.1029/2021gl095545
https://doi.org/10.1029/2021gl095545
Venus lacks significant intrinsic magnetic fields and thus its atmosphere and ionosphere interact directly with the solar wind flow and magnetic fields. Interplanetary magnetic fields (IMF) can penetrate into the ionosphere when the upstream solar wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da31b91fa4f5f1217dc46baf80476195
https://doi.org/10.5194/epsc2021-33
https://doi.org/10.5194/epsc2021-33
Autor:
Joseph M. Grebowsky, Shaosui Xu, Glyn Collinson, Alex Glocer, David L. Mitchell, Bruce M. Jakosky, Laila Andersson, R. A. Frahm
Publikováno v:
Geophys Res Lett
We test the hypothesis that their dominant driver of a planetary ambipolar electric field is the ionospheric electron pressure gradient (∇P(e)). The ionospheres of Venus and Mars are mapped using Langmuir probe measurements from NASA’s Pioneer Ve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24a7148f6b3e9fe1d65c0045f85b959a
https://doi.org/10.1029/2018gl080597
https://doi.org/10.1029/2018gl080597
Autor:
Glyn Collinson, Bruce M. Jakosky, Jasper Halekas, Nick Omidi, David L. Mitchell, R. A. Frahm, Jared Espley, David G. Sibeck, Tielong Zhang, Yoshifumi Futaana
Publikováno v:
Journal of Geophysical Research: Space Physics. 125
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7daf9a3f267d43d3e849c03e09253ab8
https://doi.org/10.1029/2020ja028023
https://doi.org/10.1029/2020ja028023
We report the first observations of sounder accelerated particles (SAP) in the ionosphere of a planet which does not possess a strong magnetic field (Mars). These observations were conducted onboard the Mars Express spacecraft by the ion and electron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15a36b5b14f667a7ec6abb1b5ea84207
https://doi.org/10.5194/egusphere-egu2020-18500
https://doi.org/10.5194/egusphere-egu2020-18500
Autor:
S. Barabash, M. Holmstrom, H. Nillsson, David Andrews, R. A. Frahm, Andrew Kopf, Andrii Voshchepynets, J. D. Winningham
Publikováno v:
Journal of Geophysical Research: Space Physics. 125
The electron sensor of the Analyzer of Space Plasmas and Energetic Atoms experiment detects accelerated electrons during pulses of radio emissions from the powerful topside sounder: the Mars Advanc ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d501a3755140cb46fed8446f70cdb108
https://doi.org/10.1029/2019ja027206
https://doi.org/10.1029/2019ja027206