Results 11 to 20 of about 357,993 (360)

Dayside response of the magnetosphere to a small shock compression: Van Allen Probes, Magnetospheric MultiScale, and GOES-13. [PDF]

Geophys Res Lett, 2017
Observations from Magnetospheric MultiScale (~8 Re) and Van Allen Probes (~5 and 4 Re) show that the initial dayside response to a small interplanetary shock is a double-peaked dawnward electric field, which is distinctly different from the usual bipolar
Cattell C, Breneman A, Colpitts C, Dombeck J, Thaller S, Tian S, Wygant J, Fennell J, Hudson MK, Ergun R, Russell CT, Torbert R, Lindqvist PA, Burch J.   +13 more
europepmc   +7 more sources

Electron densities inferred from plasma wave spectra obtained by the Waves instrument on Van Allen Probes. [PDF]

J Geophys Res Space Phys, 2015
The twin Van Allen Probe spacecraft, launched in August 2012, carry identical scientific payloads. The Electric and Magnetic Field Instrument Suite and Integrated Science suite includes a plasma wave instrument (Waves) that measures three magnetic and ...
Kurth WS, De Pascuale S, Faden JB, Kletzing CA, Hospodarsky GB, Thaller S, Wygant JR.   +6 more
europepmc   +2 more sources

Van Allen Probes Observations of Oxygen Ions at the Geospace Plume [PDF]

Frontiers in Astronomy and Space Sciences, 2021
The geospace plume couples the ionosphere, plasmasphere, and magnetosphere from sub-auroral regions to the magnetopause, on polar field lines, and into the magnetotail.
John C. Foster, Philip J. Erickson
doaj   +3 more sources

Temperature of the plasmasphere from Van Allen Probes HOPE [PDF]

Journal of Geophysical Research: Space Physics, 2016
AbstractWe introduce two novel techniques for estimating temperatures of very low energy space plasmas using, primarily, in situ data from an electrostatic analyzer mounted on a charged and moving spacecraft. The techniques are used to estimate proton temperatures during intervals where the bulk of the ion plasma is well below the energy bandpass of ...
K. J. Genestreti, J. Goldstein, G. D. Corley, William R. Farner, L. M. Kistler, B. Larsen, C. Mouikis, Chae M. Ramnarace, R. M. Skoug, N. E. Turner   +9 more
openalex   +4 more sources

Banana Current in the Inner Magnetosphere Observed by Van Allen Probes

Geophysical Research Letters, 2023
By using the magnetic field data from Van Allen Probes, we analyzed the distribution characteristics of the electromagnetic environment in the inner magnetosphere on different Dst* index and magnetic local time.
Tong‐Hui Wang, Xiao‐Xin Zhang, Fei He, Jing‐Tian Lv, Qiu‐Gang Zong, Hui‐Shan Fu   +5 more
doaj   +2 more sources

Electron dropout echoes induced by interplanetary shock: Van Allen Probes observations [PDF]

Geophysical Research Letters, 2016
On 23 November 2012, a sudden dropout of the relativistic electron flux was observed after an interplanetary shock arrival. The dropout peaks at ∼1 MeV and more than 80% of the electrons disappeared from the drift shell.
Y. X. Hao, Q.‐G. Zong, X.‐Z. Zhou, S. Y. Fu, R. Rankin, C.‐J. Yuan, A. T. Y. Lui, H. E. Spence, J. B. Blake, D. N. Baker, G. D. Reeves   +10 more
doaj   +2 more sources

Energetic Proton Spectra Measured by the Van Allen Probes [PDF]

Journal of Geophysical Research: Space Physics, 2017
AbstractWe test the hypothesis that pitch angle scattering by electromagnetic ion cyclotron (EMIC) waves can limit ring current proton fluxes. For two chosen magnetic storms, during 17–20 March 2013 and 17–20 March 2015, we measure proton energy spectra in the region 3 ≤ L ≤ 6 using the RBSPICE‐B instrument on the Van Allen Probes.
Danny Summers, Run Shi, M. J. Engebretson, Kjellmar Oksavik, J. W. Manweiler, D. G. Mitchell   +5 more
openalex   +4 more sources

Van Allen Probes observations of direct wave‐particle interactions [PDF]

Geophysical Research Letters, 2014
Quasiperiodic increases, or “bursts,” of 17–26 keV electron fluxes in conjunction with chorus wave bursts were observed following a plasma injection on 13 January 2013. The pitch angle distributions changed during the burst events, evolving from sinN(α) to distributions that formed maxima at α = 75–80°, while fluxes at 90° and
Fennell, Joseph F., Roeder, J., Kurth, W. S., Henderson, M. G., Larsen, B. A., Hospodarsky, G. B., Wygant, J. R., Claudepierre, S., Blake, J. B., Spence, Harlan E., Clemmons, J. H., Funsten, H. O., Kletzing, C A., Reeves, Geoffrey   +13 more
openaire   +6 more sources

A statistical study of the spatial distribution and source-region size of chorus waves using Van Allen Probes data [PDF]

Annales Geophysicae, 2018
The spatial distribution and source-region size of chorus waves are important parameters for understanding their generation. In this work, we analyze over 3 years of continuous wave burst-mode data from the Van Allen Probes mission and build a data ...
S. Teng, S. Teng, X. Tao, X. Tao, W. Li, W. Li, Y. Qi, Y. Qi, Y. Qi, X. Gao, X. Gao, L. Dai, Q. Lu, Q. Lu, S. Wang, S. Wang   +15 more
doaj   +3 more sources

Magnetohydrodynamic modeling of three Van Allen Probes storms in 2012 and 2013 [PDF]

Annales Geophysicae, 2015
Coronal mass ejection (CME)-shock compression of the dayside magnetopause has been observed to cause both prompt enhancement of radiation belt electron flux due to inward radial transport of electrons conserving their first adiabatic invariant and ...
J. Paral, J. Paral, M. K. Hudson, B. T. Kress, M. J. Wiltberger, J. R. Wygant, H. J. Singer   +6 more
doaj   +4 more sources