Results 111 to 120 of about 9,433 (226)

GeV Particle Acceleration in Solar Flares and Ground Level Enhancement (GLE) Events

, 2011
{\sl Ground Level Enhancement (GLE)} events represent the largest class of {\sl solar energetic particle (SEP)} events that require acceleration processes to produce $\gapprox 1$ GeV ions in order to produce showers of secondary particles in the Earth's ...
Aschwanden, Markus J.
core   +1 more source

Nonthermal Acceleration of Electrons, Positrons, and Protons at a Nonrelativistic Quasi-parallel Collisionless Shock

The Astrophysical Journal
Energetic positrons have been observed in the interstellar medium, and high-energy positrons with relativistic energies up to approximately 1 TeV have been detected in Galactic cosmic rays.
Huan Yu, Qi Xia, Jun Fang
doaj   +1 more source

Heliospheric consequences of solar activity in geophysical and interplanetary phenomena [PDF]

Geofísica Internacional, 2004
We have done an analysis of the total solar magnetic flux, polar coronal hole area and sunspots. We investigate their long term evolution over several solar cycles and their possible relationship with interplanetary shocks, sudden storm commencements at ...
D. Maravilla, A. Lara, J. F. Valdés-Galicia   +2 more
doaj  

Electron Energy Partition across Interplanetary Shocks. I. Methodology and Data Product. [PDF]

Astrophys J Suppl Ser, 2019
Wilson LB, Chen LJ, Wang S, Schwartz SJ, Turner DL, Stevens ML, Kasper JC, Osmane A, Caprioli D, Bale SD, Pulupa MP, Salem CS, Goodrich KA.   +12 more
europepmc   +1 more source

Particles accelerated by shocks in the heliosphere [PDF]

The populations of energetic ions accelerated by shocks in the heliosphere are reviewed briefly.
Lee, Martin A.
core   +1 more source

A tale of two shocks

Astronomy & Astrophysics
Context. Energetic particles in interplanetary space are normally measured on timescales that are long compared to the ion gyroperiod. Such observations by necessity average out the microphysics associated with the acceleration and transport of 10 s–100 ...
Wimmer-Schweingruber R. F., Trotta D., Kieokaew R., Yang L., Kollhoff A., Berger L., Kühl P., Böttcher S. I., Heber B., Louarn P., Fedorov A., Rodriguez-Pacheco J., Gómez-Herrero R., Espinosa Lara F., Cernuda I., Kartavykh Y., Wang L., Ho G. C., Allen R. C., Mason G. M., Ding Z., Larosa A., Sindhuja G., Eldrum S., Fleth S., Lario D.   +25 more
doaj   +1 more source

Interplanetary stream interfaces [PDF]

At l AU there is a distinct boundary (the stream interface) at the leading edge of a stream in the solar wind, characterized by an abrupt drop in density, a similar increase in temperature and a small increase in speed.
Burlaga, L. F.
core   +1 more source

Evolution of Electron Acceleration by Corotating Interaction Region Shocks at 1 au

The Astrophysical Journal Letters
We present the first observations of in situ electron acceleration at corotating interaction region (CIR) shocks near 1 au, utilizing measurements from Wind and Magnetospheric Multiscale (MMS) mission in the interplanetary medium. As the forward (reverse)
Xinnian Guo, Linghua Wang, Wenyan Li, Qianyi Ma, Liu Yang, Robert F. Wimmer-Schweingruber, Stuart D. Bale   +6 more
doaj   +1 more source

Plasma Environment, Radiation, Structure, and Evolution of the Uranian System (PERSEUS): A Dedicated Orbiter Mission Concept to Study Space Physics at Uranus. [PDF]

Space Sci Rev, 2023
Cohen IJ, Smith EJ, Clark GB, Turner DL, Ellison DH, Clare B, Regoli LH, Kollmann P, Gallagher DT, Holtzman GA, Likar JJ, Morizono T, Shannon M, Vodusek KS.   +13 more
europepmc   +1 more source

Criteria of interplanetary parameters causing intense magnetic storms (Dst less than -100nT) [PDF]

Ten intense storms occurred during the 500 days of August 16, 1978 to December 28, 1979. From the analysis of ISEE-3 field and plasma data, it is found that the interplanetary cause of these storms are long-duration, large and negative IMF B sub Z events,
Gonzalez, Walter D., Tsurutani, Bruce T.
core   +1 more source