Results 21 to 30 of about 1,109 (199)

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
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Multispacecraft observations of the terrestrial bow shock and magnetopause during extreme solar wind disturbances [PDF]

Annales Geophysicae, 2012
Three events are discussed from the declining phase of the last solar cycle when the magnetopause and/or the bow shock were observed unusually close to the Earth due to major interplanetary disturbances.
M. Tátrallyay, G. Erdös, Z. Németh, M. I. Verigin, S. Vennerstrom   +4 more
doaj   +1 more source

CLASSIFICATION OF THE INTERPLANETARY SHOCKS BY SHOCK DRIVERS [PDF]

Journal of The Korean Astronomical Society, 2002
From the data of solar wind observation by ACE spacecraft orbiting the Earth-Sun Lagrangian point, we selected 48 forward interplanetary shocks(IPSs) occurred in 2000, maximum solar activity period. Examining the profiles of solar wind parameters, the IPSs are classified by their shock drivers.
SU YEON OH, YU YI, JA-KYUNG NAH, KYUNG-SEOK CHO   +3 more
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Observations of ionospheric flows and particle precipitation following a Sudden Commencement [PDF]

Annales Geophysicae, 2000
On May 4, 1998, at 0227 UT an interplanetary shock crossed the WIND spacecraft, and half an hour later a Sudden Commencement occurred. Coinciding with the Sudden Commencement a rapid intensification of the flux of particle precipitation into the ...
E. Nielsen, E. Nielsen, F. Honary
doaj   +1 more source

Interpretation of Flat Energy Spectra Upstream of Fast Interplanetary Shocks

The Astrophysical Journal, 2023
Interplanetary shocks are large-scale heliospheric structures often caused by eruptive phenomena at the Sun, and represent one of the main sources of energetic particles.
Silvia Perri, Giuseppe Prete, Gaetano Zimbardo, Domenico Trotta, Lynn B. Wilson III, David Lario, Sergio Servidio, Francesco Valentini, Joe Giacalone   +8 more
doaj   +1 more source

Impact angle control of interplanetary shock geoeffectiveness [PDF]

Journal of Geophysical Research: Space Physics, 2014
AbstractWe use Open Geospace General Circulation Model global MHD simulations to study the nightside magnetospheric, magnetotail, and ionospheric responses to interplanetary (IP) fast forward shocks. Three cases are presented in this study: two inclined oblique shocks, hereafter IOS‐1 and IOS‐2, where the latter has a Mach number twice stronger than ...
Oliveira, D. M., Raeder, J.
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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

Acceleration of an interplanetary shock through the magnetosheath: a global hybrid simulation

Frontiers in Astronomy and Space Sciences
According to most observations and simulations, interplanetary shocks slow down when they propagate through the magnetosheath. In this article, we present results from a self-consistent global hybrid PIC simulation of an interplanetary shock which, by ...
C. Moissard, C. Moissard, P. Savoini, D. Fontaine, R. Modolo   +4 more
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

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