Results 21 to 30 of about 1,718 (220)

Drift acceleration at interplanetary shocks [PDF]

open access: yesThe Astrophysical Journal Supplement Series, 1994
AbstractScatter-free acceleration of energetic particles by quasi-perpendicular interplanetary shocks is investigated. A brief review is given on the predictions of the gradient drift acceleration model concerning the energy, time, and angular dependence of the particle flux caused by a single shock encounter interaction.
G. Erdös, A. Balogh
openaire   +1 more source

In Situ Observation of Electron Acceleration by a Double Layer in the Bow Shock

open access: yesThe Astrophysical Journal, 2023
The importance of the electric potential along the field direction in the acceleration of electrons in the quasi-perpendicular bow shock has been proposed.
C. M. Wang   +6 more
doaj   +1 more source

In situ local shock speed and transit shock speed [PDF]

open access: yesAnnales Geophysicae, 1998
A useful index for estimating the transit speeds was derived by analyzing interplanetary shock observations. This index is the ratio of the in situ local shock speed and the transit speed; it is 0.6–0.9 for most observed shocks.
S. Watari, T. Detman
doaj   +1 more source

Signatures of interplanetary transients behind shocks and their associated near-surface solar activity [PDF]

open access: yesAnnales Geophysicae, 1998
Interplanetary transients with particular signatures different from the normal solar wind have been observed behind interplanetary shocks and also without shocks.
S. Bravo, X. Blanco-Cano
doaj   +1 more source

CLASSIFICATION OF THE INTERPLANETARY SHOCKS BY SHOCK DRIVERS [PDF]

open access: yesJournal 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   +3 more
openaire   +1 more source

Scattering of Superthermal Ions at Shocks: Dependence on Energy

open access: yesThe Astrophysical Journal, 2023
Diffusive shock acceleration requires the production of backstreaming superthermal ions (injection) as a first step. Such ions can be generated in the process of scattering of ions in the superthermal tail off the shock front. Knowledge of the scattering
Michael Gedalin   +3 more
doaj   +1 more source

High‐Pressure Carbonaceous Phases as Minerals

open access: yesGeophysical Monograph Series, Page 11-23., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Oliver Tschauner
wiley  

+1 more source

Interaction of a strong interplanetary shock with the termination shock [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 1999
The 1991 global merged interaction region (GMIR) shock is a strong forward shock observed from Voyager 2 on day 146 of 1991 at 34.6 AU. As the GMIR shock propagated out‐ward in the distant heliosphere, it eventually encounters the termination shock. We study the interaction of the GMIR shock with the termination shock taking into account the influence ...
J. Y. Lu, Y. C. Whang, L. F. Burlaga
openaire   +1 more source

Compression of the Earth's magnetotail by interplanetary shocks directly drives transient magnetic flux closure [PDF]

open access: yes, 2006
peer reviewedWe use a novel method to evaluate the global opening and closure of magnetic flux in the terrestrial system, and to analyse two interplanetary shock passages that occurred during magnetically quiet periods.
Palmroth, Minna   +26 more
core   +1 more source

Shock Heating of Incident Thermal and Superthermal Populations of Different Ion Species

open access: yesThe Astrophysical Journal, 2023
Using ion tracing in a model shock front we study heating of thermal (Maxwellian) and superthermal (Vasyliunas–Siscoe) populations of protons, singly charged helium, and alpha particles. It is found that heating of thermal and superthermal populations is
Michael Gedalin   +2 more
doaj   +1 more source

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