Results 31 to 40 of about 19,033 (227)

Single-spacecraft techniques for shock parameters estimation: A systematic approach

Frontiers in Astronomy and Space Sciences, 2022
Spacecraft missions provide the unique opportunity to study the properties of collisionless shocks utilising in situ measurements. In the past years, several diagnostics have been developed to address key shock parameters using time series of magnetic ...
D. Trotta, L. Vuorinen, H. Hietala, H. Hietala, T. Horbury, N. Dresing, J. Gieseler, A. Kouloumvakos, D. Price, F. Valentini, E. Kilpua, R. Vainio   +11 more
doaj   +1 more source

Magnetohydrodynamic Simulation of the Interaction between Interplanetary Strong Shock and Magnetic Cloud and its Consequent Geoeffectiveness 2: Oblique Collision

, 2009
Numerical studies of the interplanetary "shock overtaking magnetic cloud (MC)" event are continued by a 2.5 dimensional magnetohydrodynamic (MHD) model in heliospheric meridional plane.
Baker, Berdichevsky, Burlaga, Burlaga, Burlaga, Burton, Dal Lago, Detman, Dryer, Dryer, Farrugia, Fry, Fry, Goldstein, Gombosi, Gonzalez, Gonzalez-Esparza, Gosling, Gosling, Groth, Hidalgo, Hidalgo, Hu, Hu, Huinan Zheng, Larson, Lugaz, Lundquist, Manchester, Manchester, Ming Xiong, Odstrcil, Odstrcil, Osherovich, Osherovich, Osherovich, Owens, Parker, Richardson, Richardson, Riley, Schmidt, Schwenn, Shui Wang, Smart, Smith, Smith, Toth, Tsurutani, Vandas, Vandas, Vandas, Vandas, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Webb, Wei, Wei, Xiong, Yuming Wang, Zhang   +68 more
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MHD waves at the pre-front of interplanetary shocks on September 6 and 7, 2017

Solar-Terrestrial Physics
We analyze strong space weather disturbances during first ten days of September 2017, using the geomagnetic Dst index, parameters of normals to interplanetary shock fronts, direct measurements of interplanetary magnetic field, solar wind, and cosmic ray ...
Starodubtsev S. A., Shadrina L. P.
doaj   +1 more source

Evidence for transient, local ion foreshocks caused by dayside magnetopause reconnection [PDF]

Annales Geophysicae, 2016
We present a scenario resulting in time-dependent behaviour of the bow shock and transient, local ion reflection under unchanging solar wind conditions.
Y. Pfau-Kempf, Y. Pfau-Kempf, H. Hietala, S. E. Milan, L. Juusola, S. Hoilijoki, S. Hoilijoki, U. Ganse, U. Ganse, S. von Alfthan, M. Palmroth   +10 more
doaj   +1 more source

Global Magnetospheric Response to an Interplanetary Shock: THEMIS Observations [PDF]

, 2011
We investigate the global response of geospace plasma environment to an interplanetary shock at approx. 0224 UT on May 28, 2008 from multiple THEMIS spacecraft observations in the magnetosheath (THEMIS B and C) and the mid-afternoon (THEMIS A) and dusk ...
Angelopoulos, V., Glassmeier, K.-H., Larson, Davin, McFadden, James P., Sibeck, David G., Zhang, Hui, Zong, Q.-G.   +6 more
core   +2 more sources

Particle Acceleration at Interplanetary Shocks [PDF]

AIP Conference Proceedings, 2008
The acceleration of interstellar pick-up ions as well as solar wind species has been observed at a multitude of interplanetary (IP) shocks by different spacecraft. This paper expands upon previous work modeling the phase space distributions of accelerated ions associated with the shock event encountered on day 292 of 1991 by the Ulysses mission at 4.5 ...
Matthew G. Baring, Errol J. Summerlin, Gang Li, Qiang Hu, Olga Verkhoglyadova, Gary P. Zank, R. P. Lin, J. Luhmann   +7 more
openaire   +2 more sources

Reflected ions at interplanetary shocks [PDF]

Geophysical Research Letters, 2010
This paper shows that the shock dissipation mechanism changes profoundly from the inner to outer heliosphere and that pickup ions are responsible for shock dissipation beyond 35 AU. We make the first study of reflected ions in ICME sheaths downstream of interplanetary shocks observed by Voyager 2 from 1–80 AU.
openaire   +1 more source

Acceleration of Suprathermal protons near an Interplanetary Shock

Astronomy & Astrophysics, 2023
Context. Interplanetary collisionless shocks are known to be sources of energetic charged particles up to hundreds of MeV. However, the underlying acceleration mechanisms are still under debate.Aims. We determine the properties of suprathermal protons accelerated by the interplanetary shock on 2021 November 3 with the unprecedented ...
Liu Yang, Verena Heidrich-Meisner, Lars Berger, Robert Wimmer-Schweingruber, Linghua Wang, Jiansen He, Xingyu Zhu, Die Duan, Alexander Kollhoff, Daniel Pacheco, Patrick Kühl, Zigong Xu, Duncan Keilbach, Javier Rodríguez-Pacheco, George Ho   +14 more
openaire   +1 more source

The event of 21 June 1980 and the origin of solar cosmic rays [PDF]

Geofísica Internacional, 2000
We present well-observed interplanetary disturbances in the near Earth environment and discuss their behavior. From these observations a hypothetical two source origin of Solar Cosmic Rays is discussed.
Adolfo L. Méndez Berhondo, Roman Pérez-Enríquez, Ramón E. Rodríguez Taboada   +2 more
doaj  

Ion dynamics in quasi-perpendicular collisionless interplanetary shocks: A case study

Frontiers in Physics, 2013
Interplanetary shocks are believed to play an important role in the acceleration of charged particles in the heliosphere. While the acceleration to high energies proceeds via the diffusive mechanism at the scales exceeding by far the shock width, the ...
Michael eGedalin, Wolfgang eDroege
doaj   +1 more source