Results 61 to 70 of about 9,642 (217)

Radiation risks from large solar energetic particle events [PDF]

, 2007
Solar energetic particles (SEPs) constitute a radiation hazard to both humans and hardware in space. Over the past few years there have been significant advances in our knowledge of the composition and energy spectra of SEP events, leading to new ...
Cohen, C. M. S., Haggerty, D. K., Looper, M. L., Mason, G. M., Mewaldt, R. A., von Rosenvinge, T. T., Wiedenbeck, M. E.   +6 more
core   +1 more source

Magnetic Reconnection as a Potential Trigger for Magnetotail Flapping at Mars: Insights From MAVEN and Tianwen‐1 Observations

AGU Advances, Volume 7, Issue 2, April 2026.
Abstract Magnetotail current sheet (CS) flapping is a universal plasma phenomenon observed at multiple planets, yet its triggering mechanisms remain poorly understood outside of Earth. At Mars, single‐spacecraft observations have also reported tail flapping, but the processes responsible for its onset have never been identified.
Yuanzheng Wen, Jasper S. Halekas, Han‐Wen Shen, Chi Zhang, Robert J. Lillis, Jiawei Gao, Norberto Romanelli, Long Cheng, Chuanfei Dong, Yingjuan Ma, Yaxue Dong, Shaosui Xu, David A. Brain, Junfeng Qin, Jared R. Espley, David L. Mitchell, Christian Mazelle, James P. McFadden, Shannon M. Curry   +18 more
wiley   +1 more source

A Twenty Year Decline in Solar Photospheric Magnetic Fields: Inner-Heliospheric Signatures and Possible Implications?

, 2015
We report observations of a steady 20 year decline of solar photospheric fields at latitudes $\geq$45${^{o}}$ starting from $\sim$1995. This prolonged and continuing decline, combined with the fact that Cycle 24 is already past its peak, implies that ...
Ananthakrishnan, S., Bisoi, Susanta Kumar, Fujiki, K., Janardhan, P., Jose, L., Sridharan, R., Tokumaru, M.   +6 more
core   +1 more source

Relationship Between Foreshock Structures and Magnetosheath Jets

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract Plasma structures with enhanced dynamic pressure know as jets are frequently observed in the magnetosheath. We examine a possible connection of these jets with structures reported in the foreshock like SLAMS or plasmoids. A statistical study of the relation of the upstream conditions and the occurrence rates of magnetosheath (MSH) jets and ...
N. Xirogiannopoulou, O. Goncharov, J. Šafránková, Z. Němeček   +3 more
wiley   +1 more source

A Fokker–Planck Framework for Studying the Variability of the Magnetic Field Direction in the Alfvénic Streams of the Solar Wind

The Astrophysical Journal Letters
Turbulent rotations of the magnetic field vector are observed in the Alfvénic streams of the solar wind where the magnetic field strength remains close to a constant. They can lead to reversals of the radial magnetic field component or switchbacks. It is
N. H. Bian, Gang Li
doaj   +1 more source

Simulated Energetic Particle Transport in the Interplanetary Space: The Palmer Consensus Revisited

, 2013
Reproducing measurements of the scattering mean free paths for energetic particles propagating through the solar system has been a major problem in space physics. The pioneering work of Bieber et al. [Astrophys. J. 420, 294 (1994)] provided a theoretical
Shalchi, A., Tautz, R. C.
core   +1 more source

Characterizing the Role of Storm‐Time High‐Latitude Ionospheric Structures in GPS Position Accuracy in Antarctica: May 2024 Storm

Space Weather, Volume 24, Issue 4, April 2026.
Abstract This study investigates the impact of high‐latitude ionospheric irregularities on global positioning system (GPS) position accuracy during the 10–11 May 2024 geomagnetic storm. Using data from ground‐based GPS receivers and an all‐sky camera in Antarctica, we examined evolution of GPS vertical total electron content, phase fluctuations, and ...
Waqar Younas, Yukitoshi Nishimura, Weixuan Liao, Josh L. Semeter, Sebastijan Mrak, Y. Jade Morton, Keith M. Groves, Tetsuo Motoba, Tim Everett   +8 more
wiley   +1 more source

Third-moment descriptions of the interplanetary turbulent cascade, intermittency and back transfer [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2015
We review some aspects of solar wind turbulence with an emphasis on the ability of the turbulence to account for the observed heating of the solar wind. Particular attention is paid to the use of structure functions in computing energy cascade rates and their general agreement with the measured thermal proton heating.
Jesse T, Coburn, Miriam A, Forman, Charles W, Smith, Bernard J, Vasquez, Julia E, Stawarz   +4 more
openaire   +2 more sources

Three-dimensional Evolution of Solar Wind during Solar Cycles 22-24

, 2012
This paper presents the analysis of 3D evolution of solar wind density turbulence and speed at various levels of solar activity between solar cycles 22 and 24.
Abramenko, Basu, Coles, Kojima, Koutchmy, Lallement, Liu, Lo, Manoharan, Manoharan, Manoharan, Manoharan, Manoharan, Manoharan, Mewaldt, P. K. Manoharan, Readhead, Sheeley, Yashiro   +18 more
core   +1 more source

Turbulence‐Resilient Coherent Receiver Array on CMOS‐Compatible Silicon Photonics for Free Space Optical Communications

Nanophotonics, Volume 15, Issue 5, 16 March 2026.
A CMOS‐compatible silicon‐photonic 4 × 4 coherent receiver array spatially samples turbulence‐distorted wavefronts and, with maximum‐ratio combining, enables signal recovery. Experimental BPSK tests under moderate turbulence approach theoretical combining efficiency, reducing BER from 1E‐2 to 1E‐15.
Alireza Fardoost, Fatemeh Ghaedi Vanani, Aneesh Sobhanan, Dhruvkumar Desai, Inwoong Kim, Olga Vassilieva, Paparao Palacharla, Guifang Li   +7 more
wiley   +1 more source