Výsledky vyhledávání - "David Schriver"

Do we need to consider electrons’ kinetic effects to properly model a planetary magnetosphere? The case of Mercury

Autor: Giovanni Lapenta, David Schriver, Raymond J. Walker, Jean Berchem, Nicole F. Echterling, Mostafa El Alaoui, Pavel Travnicek

While a global full particle-in-cell (PIC) model of Earth’s magnetosphere cannot yet achieve enough resolution to be quantitatively accurate, the full model of smaller planets is becoming possible and can be used to learn what extra effects the ful

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::155878452b6da4d6655e5a134ae9385a
https://doi.org/10.5194/egusphere-egu22-1969

Zobrazit plný text záznamu

Do we need to consider electron kinetic effects to properly model a planetary magnetosphere: the case of Mercury

Autor: Giovanni Lapenta, David Schriver, Raymond J. Walker, Jean Berchem, Nicole F. Echterling, Mostafa El Alaoui, Pavel Travnicek

The magnetosphere of Mercury is studied using an implicit full particle in cell simulation (PIC). We use a hybrid simulation where ions are full particles and electrons are considered as a fluid to start a full PIC simulation where electrons are also

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c27580e825584685bf9cd2086ffce49a

Zobrazit plný text záznamu

Particle Acceleration in Earth’s Global Magnetosphere: a Multiple Step Process

Autor: Jean Berchem, Robert L. Richard, Mostafa El-Alaoui, Raymond J. Walker, Giovanni Lapenta, David Schriver

Particle velocity distribution functions measured by spacecraft show that suprathermal ion and electron populations are a common feature of Earth’s magnetosphere. An outstanding question has been to determine the acceleration processes that lead to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e3f654d1704a5255f2a4b3ff8337ab77
https://doi.org/10.5194/egusphere-egu2020-5823

Zobrazit plný text záznamu

Particle energisation and energy transport in Multiscale MHD - Hybrid - Kinetic PIC models of magnetospheres

Autor: Giovanni Lapenta, Pavel Trávníček, Robert L. Richard, David Schriver, Jean Berchem, Mostafa El Alaoui, Raymond J. Walker

A grand challenge in physics is to understand how and where electrons and ions accelerate to high energy, often forming power law distributions. We report the result of a combined kinetic-fluid effort [1]. For Earth, a full kinetic model of sizeable

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eb07372c52bedb27246320cf420039bb
https://doi.org/10.5194/egusphere-egu2020-10074

Zobrazit plný text záznamu

Particle Acceleration and Transport in the Magnetotail

Autor: Mostafa El-Alaoui, David Schriver, Raymond Walker, Giovanni Lapenta, Robert Richard, Jean Berchem

An outstanding problem of magnetospheric physics is to determine the energization of particles transported from the nightside to the dayside. To address this research problem, we leverage our simulation capabilities by combining three different simul

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2d81327049f7a2c5d5685b741f460cb2
https://doi.org/10.5194/egusphere-egu2020-6210

Zobrazit plný text záznamu

Flows in the Magnetotail

Autor: Mostafa El-Alaoui, Raymond J. Walker, Robert L. Richard, David Schriver, Jean Berchem, Giovanni Lapenta

Magnetic reconnection leads to fast streaming of electrons and ions away from the reconnection site. We have used an implicit particle-in-cell simulation (iPic3D) embedded within a global MHD simulation of the solar wind and magnetosphere interaction

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::29c3267be617f4496f42ca2c86b0eb9d
https://doi.org/10.5194/egusphere-egu2020-3234

Zobrazit plný text záznamu

Ices on Mercury: Chemistry of volatiles in permanently cold areas of Mercury's north polar region

Autor: David Schriver, David A. Paige, E.R. Harju, Matthew A. Siegler, Pavel M. Trávníček, Robert E. Johnson, M.L. Delitsky

Publikováno v: Icarus. 281:19-31

Observations by the MESSENGER spacecraft during its flyby and orbital observations of Mercury in 2008–2015 indicated the presence of cold icy materials hiding in permanently-shadowed craters in Mercury's north polar region. These icy condensed vola

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::24f5a6e3a5195a99ff8f47e485270c0f
https://doi.org/10.1016/j.icarus.2016.08.006

Zobrazit plný text záznamu

Intense energetic electron flux enhancements in Mercury's magnetosphere: An integrated view with high‐resolution observations from MESSENGER

Autor: Daniel N. Baker, Ralph L. McNutt, Haje Korth, George C. Ho, John O. Goldsten, James A. Slavin, Jim M. Raines, Brian J. Anderson, David J. Lawrence, Stamatios M. Krimigis, David Schriver, Patrick N. Peplowski, R. M. Dewey, Sean C. Solomon

Publikováno v: Journal of Geophysical Research. Space Physics

The MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) mission to Mercury has provided a wealth of new data about energetic particle phenomena. With observations from MESSENGER's Energetic Particle Spectrometer, as well as data

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fa2847fd0ad68ab6b76e5dac43fc87a
http://europepmc.org/articles/PMC5076489

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání