Results 21 to 30 of about 19,033 (227)

Arrival times of Flare/Halo CME associated shocks at the Earth: comparison of the predictions of three numerical models with these observations [PDF]

open access: yesAnnales Geophysicae, 2002
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

Dynamics of He++ Ions at Interplanetary and Earth’s Bow Shocks

open access: yesUniverse, 2022
Experimental investigations of the fine plasma structure of interplanetary shocks are extremely difficult to conduct due to their small thickness and high speed relative to the spacecraft.
Olga V. Sapunova   +3 more
doaj   +1 more source

The physics of space weather/solar-terrestrial physics (STP): what we know now and what the current and future challenges are [PDF]

open access: yesNonlinear Processes in Geophysics, 2020
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

Effects of a Local Interstellar Magnetic Field on Voyager 1 and 2 Observations [PDF]

open access: yes, 2006
We show that that an interstellar magnetic field can produce a north/south asymmetry in solar wind termination shock. Using Voyager 1 and 2 measurements, we suggest that the angle $\alpha$ between the interstellar wind velocity and magnetic field is $30^{
Edward C. Stone   +5 more
core   +4 more sources

Acceleration of protons by interplanetary shocks [PDF]

open access: yesJournal of Geophysical Research, 1971
Short duration proton energy increases observation by Explorer 34, considering interpretation as acceleration associated interplanetary ...
K. W. Ogilvie, J. F. Arens
openaire   +1 more source

Observations of ionospheric flows and particle precipitation following a Sudden Commencement [PDF]

open access: yesAnnales 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

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

open access: yesAnnales 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   +4 more
doaj   +1 more source

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

open access: yesFrontiers 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   +4 more
doaj   +1 more source

Interpretation of Flat Energy Spectra Upstream of Fast Interplanetary Shocks

open access: yesThe 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   +8 more
doaj   +1 more source

Short term Variability of the Sun Earth System: An Overview of Progress Made during the CAWSES II Period [PDF]

open access: yes, 2015
This paper presents an overview of results obtained during the CAWSES II period on the short term variability of the Sun and how it affects the near Earth space environment. CAWSES II was planned to examine the behavior of the solar terrestrial system as
Gopalswamy, Nat   +2 more
core   +2 more sources

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