Results 41 to 50 of about 499,412 (213)

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.
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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

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

On the role of interplanetary shocks in accelerating MeV electrons

Astronomy & Astrophysics, 2023
Context. One of the sources of solar energetic particle (SEP) events is shocks that are driven by fast coronal mass ejections (CMEs). They can accelerate SEPs up to relativistic energies and are attributed to the largest SEP events. New studies suggest that CME-driven shocks can potentially accelerate electrons to MeV energies in the vicinity of the ...
N. Talebpour Sheshvan, N. Dresing, R. Vainio, A. Afanasiev, D. E. Morosan   +4 more
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Properties of a Supercritical Quasi-perpendicular Interplanetary Shock Propagating in the Terrestrial Foreshock Region

, 2022
International audienceWe investigate the properties of an interplanetary (IP) shock (M f = 2.1, θ = 80°) that was detected by Wind on 1999 September 12 and was magnetically connected to the terrestrial bow shock.
Issautier, Karine, Jagarlamudi, Vamsee Krishna, Lembège, Bertrand, Zhao, Xiaowei, Wilson III, L., B., Huang, Jia, Liu, Ying D., Wilson III, L. B., Jagarlamudi, Vamsee, Krishna, Chrysaphi, Nicolina, Liu, Ying, D., Yang, Zhongwei, Liu, Mingzhe, Zhao, Siqi   +13 more
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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

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  

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

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
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Intense Magnetopause Erosion at Earth During the May 2024 Solar Storm

Geophysical Research Letters, Volume 53, Issue 21, 16 November 2026.
Abstract Earth's main magnetic field forms the magnetosphere, shielding the planet from solar wind plasma. Southward interplanetary magnetic fields erode the magnetosphere, a process known as magnetopause erosion, allowing solar wind penetration close to the Earth.
Kazuhiro Yamamoto, Yoshizumi Miyoshi, Naritoshi Kitamura, Rumi Nakamura, Atsuki Shinbori, Ayako Matsuoka, Mariko Teramoto, Shoichiro Yokota, Satoshi Kasahara, Kunihiro Keika, Tomoaki Hori, Kazushi Asamura, Yoichi Kazama, Shiang‐Yu Wang, Sunny Wing‐Yee Tam, Tzu‐Fang Chang, Bo‐Jhou Wang, Chae‐Woo Jun, Iku Shinohara   +18 more
wiley   +1 more source