Results 51 to 60 of about 18,841 (185)

A semi-analytical foreshock model for energetic storm particle events inside 1 AU [PDF]

, 2014
We have constructed a semi-analytical model of the energetic-ion foreshock of a CME-driven coronal/interplanetary shock wave responsible for the acceleration of large solar energetic particle (SEP) events.
Aran, Battarbee, Battarbee, Bell, Cranmer, Drury, Feynman, Horne, Lario, Lario, Lario, Lario, Lee, Lee, Li, Ng, Ng, Pomoell, Pomoell, Reames, Reames, Rice, Vainio, Vainio, Vainio, Verkhoglyadova, Verkhoglyadova, Verkhoglyadova, Zank   +28 more
core   +2 more sources

Fractal Dimension Analysis of Earth Magnetic Field during 26 August 2018 Geomagnetic Storm

Entropy, 2022
We analyse the fractal nature of geomagnetic field northward and eastward horizontal components with 1 min resolution measured by the four stations Belsk, Hel, Sodankylä and Hornsund during the period of 22 August–1 September, when the 26 August 2018 ...
Anna Wawrzaszek, Renata Modzelewska, Agata Krasińska, Agnieszka Gil, Vasile Glavan   +4 more
doaj   +1 more source

Electron dropout echoes induced by interplanetary shock: Van Allen Probes observations

Geophysical Research Letters, 2016
On 23 November 2012, a sudden dropout of the relativistic electron flux was observed after an interplanetary shock arrival. The dropout peaks at ∼1 MeV and more than 80% of the electrons disappeared from the drift shell.
Y. X. Hao, Q.‐G. Zong, X.‐Z. Zhou, S. Y. Fu, R. Rankin, C.‐J. Yuan, A. T. Y. Lui, H. E. Spence, J. B. Blake, D. N. Baker, G. D. Reeves   +10 more
doaj   +1 more source

Electron heating at interplanetary shocks [PDF]

, 1982
Data for 41 forward interplanetary shocks show that the ratio of downstream to upstream electron temperatures. T sub e (d/u) is variable in the range between 1.0 (isothermal) and 3.0.
Asbridge, J. R., Bame, S. J., Feldman, W. C., Gosling, J. T., Zwickl, R. D.   +4 more
core   +1 more source

Efficiency of particle acceleration at interplanetary shocks: Statistical study of STEREO observations

, 2016
Context. Among others, shocks are known to be accelerators of energetic charged particles. However, many questions regarding the acceleration efficiency and the required conditions are not fully understood. In particular, the acceleration of electrons by
Dresing, Nina, Heber, Bernd, Klassen, Andreas, Theesen, Solveig   +3 more
core   +1 more source

Interplanetary shock induced ring current auroras [PDF]

Journal of Geophysical Research: Space Physics, 2008
On 21 January 2005, a fast interplanetary (IP) shock compressed the magnetosphere and caused detached auroras (DA) on the dayside, duskside and nightside ionosphere. The DA were detected by three independent FUV instruments: IMAGE/SI‐12, TIMED/GUVI and DMSP/SSUSI. The SI‐12 observations show that the dayside detached aurora (DDA) was located between 60°
Yongliang Zhang, Larry J. Paxton, Yihua Zheng   +2 more
openaire   +1 more source

Three-stage Acceleration of Solar Energetic Particles Detected by Parker Solar Probe

The Astrophysical Journal Letters
Coronal mass ejections (CMEs) drive powerful shocks and thereby accelerate solar energetic particles (SEPs) as they propagate from the corona into interplanetary space.
Xiaomin Chen, Chuan Li
doaj   +1 more source

Multipoint, high time resolution galactic cosmic ray observations associated with two interplanetary coronal mass ejections [PDF]

, 2009
[1] Galactic cosmic rays (GCRs) play an important role in our understanding of the interplanetary medium (IPM). The causes of their short timescale variations, however, remain largely unexplored. In this paper, we compare high time resolution, multipoint
Blake, J. B., Galametz, M., Jordan, Andrew P., Mulligan, T., Shaul, D. N. A., Spence, Harlan E.   +5 more
core   +2 more sources

Simulation of January 1-7, 1978 events [PDF]

The solar wind disturbances of January 1 to 7, 1978 are reconstructed by a modeling method. First, the interplanetary magnetic field (IMF) background pattern, including a corotating shock, is reproduced using the Stanford source surface map.
Akasofu, S.-I., Chao, J. K., Moldwin, M. B.   +2 more
core   +1 more source

An analysis of interplanetary solar radio emissions associated with a coronal mass ejection

, 2016
Coronal mass ejections (CMEs) are large-scale eruptions of magnetized plasma that may cause severe geomagnetic storms if Earth-directed. Here we report a rare instance with comprehensive in situ and remote sensing observa- tions of a CME combining white ...
Bale, SD, Barnes, D, Bonnin, X, Bothmer, V, Davies, JA, Eastwood, JP, Krupar, V, Kruparova, O, Magdalenić, J, Maksimovic, M, Mrotzek, N, Oliveros, JCM, Pluta, A, Santolik, O, Soucek, J, Vourlidas, A   +15 more
core   +3 more sources