Results 1 to 10 of about 129,745 (235)

Near-Earth injection of MeV electrons associated with intense dipolarization electric fields: Van Allen Probes observations. [PDF]

Geophys Res Lett, 2015
Substorms generally inject tens to hundreds of keV electrons, but intense substorm electric fields have been shown to inject MeV electrons as well. An intriguing question is whether such MeVelectron injections can populate the outer radiation belt.
Angelopoulos, Vassilis, Baker, Daniel N, Blake, J Bernard, Breneman, Aaron, Cattell, Cynthia A, Chen, Lunjin, Claudepierre, Seth, Dai, Lei, Duan, Suping, Fennell, Joseph, Fruehauff, Dennis, Funsten, Herbert O, He, Zhaohai, Kletzing, Craig, Li, Xinlin, Malaspina, David, Reeves, Geoffrey D, Spence, Harlan E, Su, Zhenpeng, Tang, Xiangwei, Tao, Xin, Thaller, Scott, Turner, Drew L, Wang, Chi, Wygant, John R   +24 more
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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   +5 more sources

The plasma environment inside geostationary orbit: A Van Allen Probes HOPE survey [PDF]

J Geophys Res Space Phys, 2017
AbstractThe two full precessions in local time completed by the Van Allen Probes enable global specification of the near‐equatorial inner magnetosphere plasma environment. Observations by the Helium‐Oxygen‐Proton‐Electron (HOPE) mass spectrometers provide detailed insight into the global spatial distribution of electrons, H+, He+, and O+.
P. A. Fernandes, B. Larsen, M. F. Thomsen, R. M. Skoug, G. D. Reeves, M. H. Denton, R. H. Friedel, H. O. Funsten, J. Goldstein, M. G. Henderson, J. Jahn, E. MacDonald, D. K. Olson   +12 more
europepmc   +4 more sources

Science of the Van Allen Probes Science Operations Centers. [PDF]

Space Sci Rev, 2022
AbstractThe Van Allen Probes mission operations materialized through a distributed model in which operational responsibility was divided between the Mission Operations Center (MOC) and separate instrument specific SOCs. The sole MOC handled all aspects of telemetering and receiving tasks as well as certain scientifically relevant ancillary tasks.
Manweiler JW, Breneman A, Niehof J, Larsen B, Romeo G, Stephens G, Halford A, Kletzing C, Brown LE, Spence H, Reeves G, Friedel R, Smith S, Skoug R, Blake B, Baker D, Kanekal S, Hoxie V, Jaynes A, Wygant J, Bonnell J, Crawford D, Gkioulidou M, Lanzerotti LJ, Mitchell DG, Gerrard A, Ukhorskiy A, Sotirelis T, Barnes RJ, Millan R, Harris B.   +30 more
europepmc   +3 more sources

Collaborative Research Activities of the Arase and Van Allen Probes. [PDF]

Space Sci Rev, 2022
AbstractThis paper presents the highlights of joint observations of the inner magnetosphere by the Arase spacecraft, the Van Allen Probes spacecraft, and ground-based experiments integrated into spacecraft programs. The concurrent operation of the two missions in 2017–2019 facilitated the separation of the spatial and temporal structures of dynamic ...
Miyoshi Y, Shinohara I, Ukhorskiy S, Claudepierre SG, Mitani T, Takashima T, Hori T, Santolik O, Kolmasova I, Matsuda S, Kasahara Y, Teramoto M, Katoh Y, Hikishima M, Kojima H, Kurita S, Imajo S, Higashio N, Kasahara S, Yokota S, Asamura K, Kazama Y, Wang SY, Jun CW, Kasaba Y, Kumamoto A, Tsuchiya F, Shoji M, Nakamura S, Kitahara M, Matsuoka A, Shiokawa K, Seki K, Nosé M, Takahashi K, Martinez-Calderon C, Hospodarsky G, Colpitts C, Kletzing C, Wygant J, Spence H, Baker DN, Reeves GD, Blake JB, Lanzerotti L.   +44 more
europepmc   +4 more sources

Van Allen Probes Observations of Symmetric Stormtime Compressional ULF Waves. [PDF]

J Geophys Res Space Phys, 2022
AbstractPrevious spacecraft studies showed that stormtime poloidal ultralow‐frequency (ULF) waves in the ring current region have an antisymmetric (second harmonic) mode structure about the magnetic equator. This paper reports Van Allen Probes observations of symmetric ULF waves in the postnoon sector during a moderate geomagnetic storm.
Takahashi K, Crabtree C, Ukhorskiy AY, Boyd A, Denton RE, Turner D, Gkioulidou M, Vellante M, Spence HE.   +8 more
europepmc   +3 more sources

Combined model of topside ionosphere and plasmasphere derived from radio-occultation and Van Allen Probes data [PDF]

Scientific Reports, 2022
In the last years, electron density profile functions characterized by a linear dependence on the scale height showed good results when approximating the topside ionosphere. The performance above 800 km, however, is not yet well investigated.
Fabricio S. Prol, Artem G. Smirnov, M. Mainul Hoque, Yuri Y. Shprits   +3 more
doaj   +2 more sources

Event-specific chorus wave and electron seed population models in DREAM3D using the Van Allen Probes [PDF]

, 2014
The DREAM3D diffusion model is applied to Van Allen Probes observations of the fast dropout and strong enhancement of MeV electrons during the October 2012 double-dip storm. We show that in order to explain the very different behavior in the two dips,
Agapitov, Albert, Brautigam, Brautigam, Chen, Chen, D. N. Baker, Elkington, G. D. Reeves, G. S. Cunningham, Ganushkina, Glauert, H. Spence, Horne, Horne, Hudson, Hudson, J. B. Blake, Kletzing, Kress, Li, Li, Li, Meredith, Meredith, Morley, Reeves, Reeves, Reeves, Roederer, Runov, S. K. Morley, Schulz, Selesnick, Selesnick, Shprits, Thorne, Tsyganenko, Tu, Tu, Tu, Turner, Weichao Tu, Y. Chen   +43 more
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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
A. Breneman, Anderson, Angelopoulos, Baker, Blake, Burch, C. Cattell, C. Colpitts, C. T. Russell, Elphic, Foster, Funsten, Halford, Hudson, J. Burch, J. Dombeck, J. Fennell, J. Wygant, Kim, Kim, Kletzing, Kress, Kurth, Lepping, Li, Lindqvist, M. K. Hudson, McFadden, Oliveira, Paral, Per-Arne Lindqvist, Robert Ergun, Roy Torbert, Russell, S. Thaller, S. Tian, Samsonov, Samsonov, Samsonov, Schiller, Schmidt, Spence, Stone, Takeuchi, Torbert, Wygant, Wygant, Zong   +47 more
core   +3 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.
Blake, J. B., Claudepierre, S., Clemmons, J. H., Fennell, Joseph F., Funsten, H. O., Henderson, M. G., Hospodarsky, G. B., Kletzing, C A., Kurth, W. S., Larsen, B. A., Reeves, Geoffrey, Roeder, J., Spence, Harlan E., Wygant, J. R.   +13 more
core   +5 more sources