Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Hayley Allison"'
Autor:
Yuri Y. Shprits, Ingo Michaelis, Dedong Wang, Hayley Allison, Ruggero Vasile, Andrei Runov, Alexander Drozdov, Christopher T. Russell, Vladimir Kalegaev, Artem Smirnov
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 12, Pp n/a-n/a (2023)
Abstract There have been a number of theories proposed concerning the loss of relativistic electrons from the radiation belts. However, direct observations of loss were not possible on a number of previous missions due to the large field of view of t
Externí odkaz:
https://doaj.org/article/d1cea8fb95ba4b4e9eb3766ef1b2da77
Autor:
Artem Smirnov, Yuri Shprits, Hayley Allison, Nikita Aseev, Alexander Drozdov, Peter Kollmann, Dedong Wang, Anthony A. Saikin
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
In this study we analyze the storm-time evolution of equatorial electron pitch angle distributions (PADs) in the outer radiation belt region using observations from the Magnetic Electron Ion Spectrometer (MagEIS) instrument aboard the Van Allen Probe
Externí odkaz:
https://doaj.org/article/a45d6637cdad484f82dc8ad83a163dcc
Publikováno v:
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Novel analysis of phase space densities at multiple energies allowsfor differentiation between various acceleration mechanisms atultra-relativistic energies. This method allows us to trace howparticles are being accelerated at different energies and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b7d0d40eb3610449eaec54584549260
Publikováno v:
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
A distinct population of ultrarelativistic electrons has been observed in the outer radiation belt after several geomagnetic storms, and recent modeling results indicate that an existing seed population, and depletions in plasmasphere electron densit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2bf02abb584aba57e2733aad02880d04
Autor:
Yuri Y. Shprits, Hayley Allison, Alexander Drozdov, Dedong Wang, Nikita Aseev, Irina Zhelavskaya, Maria Usanova
Measurements from the Van Allen Probes mission clearly demonstrated that the radiation belts cannot be considered as a bulk population above approximately electron rest mass. Ultra-relativistic electrons (~>4Mev) form a new population that shows a ve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6bae056870e570b67751723ed432dce8
https://doi.org/10.5194/egusphere-egu22-12946
https://doi.org/10.5194/egusphere-egu22-12946
Autor:
Artem Smirnov, Yuri Shprits, Hayley Allison, Nikita Aseev, Alexander Drozdov, Peter Kollmann, Dedong Wang, Anthony Saikin
Pitch angle distributions (PADs) of trapped particles play an important role in understanding the processes driving the dynamics of Earth’s radiation belts and ring current. The Van Allen Probes mission has provided electron observations of PADs wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::329a182b2d70beb2cdcee3ed998a0879
https://doi.org/10.5194/egusphere-egu22-7732
https://doi.org/10.5194/egusphere-egu22-7732
Autor:
Alina Grishina, Yuri Shprits, Michael Wutzig, Hayley Allison, Nikita Aseev, Dedong Wang, Matyas Szabo-Roberts
The particle flux in the near-Earth environment can increase by orders of magnitude during geomagnetically active periods. This leads to intensification of particle precipitation into Earth’s atmosphere. The process potentially further affects atmo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c458d81acee71078ac103ca349e41c2
https://doi.org/10.5194/egusphere-egu22-11023
https://doi.org/10.5194/egusphere-egu22-11023
Low-energy ring current electrons of up to 50 keV represent a major threat to spacecrafts within the inner magnetosphere since they are one of the main causes of spacecraft surface charging. Furthermore, they can provide a seed population for relativ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ddd439654f31b8d8ff089037d9297ad
https://doi.org/10.5194/egusphere-egu22-7570
https://doi.org/10.5194/egusphere-egu22-7570
Ring current particles affect the terrestrial magnetic field configuration, altering particle trajectories, as well as presenting a surface charging hazard for satellites. These particles can act as a seed population for the electron radiation belts
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea2e6cdc4fadf3bfc50e100615d1a8af
https://doi.org/10.5194/egusphere-egu22-7578
https://doi.org/10.5194/egusphere-egu22-7578
Satellite observations show that electrons in the Van Allen radiation belts can have energies in excess of 7 MeV. The Van Allen Probes mission not only provided measurements of ultra-relativistic radiation belt electrons, but also simultaneous observ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ee25ad2d4ad87f5db39c56f4e6e85bc
https://doi.org/10.5194/egusphere-egu22-2880
https://doi.org/10.5194/egusphere-egu22-2880