The physics of space weather/solar-terrestrial physics (STP): what we know now and what the current and future challenges are [PDF]
Major geomagnetic storms are caused by unusually intense solar wind southward magnetic fields that impinge upon the Earth's magnetosphere (Dungey, 1961). How can we predict the occurrence of future interplanetary events?
B. T. Tsurutani +3 more
doaj +1 more source
Arrival times of Flare/Halo CME associated shocks at the Earth: comparison of the predictions of three numerical models with these observations [PDF]
The arrival times at L1 of eleven travelling shocks associated both with X-ray flaring and with halo CMEs recorded aboard SOHO/LASCO have been considered.
S. M. P. McKenna-Lawlor +13 more
doaj +1 more source
Particle Acceleration at Interplanetary Shocks [PDF]
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 +7 more
openaire +2 more sources
Multispacecraft observations of the terrestrial bow shock and magnetopause during extreme solar wind disturbances [PDF]
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 +4 more
doaj +1 more source
Multiple spacecraft observations of interplanetary shocks: Characteristics of the upstream ULF turbulence [PDF]
All interplanetary shocks observed by ISEE-3 and either ISEE-1 or ISEE-2 or both in 1978 and 1979 are examined for evidence of upstream waves. In order to characterize the properties of these shocks it is necessary to determine accurate shock normals. An
Bame, S. J. +4 more
core +2 more sources
CLASSIFICATION OF THE INTERPLANETARY SHOCKS BY SHOCK DRIVERS [PDF]
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 +3 more
openaire +1 more source
Interpretation of Flat Energy Spectra Upstream of Fast Interplanetary Shocks
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 +8 more
doaj +1 more source
Observations of ionospheric flows and particle precipitation following a Sudden Commencement [PDF]
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
Impact angle control of interplanetary shock geoeffectiveness [PDF]
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.
openaire +2 more sources
Single-spacecraft techniques for shock parameters estimation: A systematic approach
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 +11 more
doaj +1 more source

