Results 41 to 50 of about 4,343 (197)

Reconstructing the Geometry of a Hot Flow Anomaly With Bounding Jets in Magnetosheath

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract When interplanetary magnetic field discontinuities interact with planetary bow shocks, hot flow anomalies (HFAs) form in the solar wind and can extend into the magnetosheath. Here we reconstruct the three‐dimensional geometry of an HFA bounded by two jet regions in the terrestrial magnetosheath.
Yufei Zhou, Boyi Wang, Savvas Raptis, Shan Wang, Jin Guo, Jih‐Hong Shue, David Sibeck, Quanming Lu, Jiamei Zhang, Chao Shen, Rungployphan Kieokaew, C. Philippe Escoubet, Peng Shao, James Burch   +13 more
wiley   +1 more source

Dawn‐Side Anomaly in Sudden Geomagnetic Field Responses to Solar Wind Pressure Discontinuities During the 10 May and 10 October 2024 Geomagnetic Storms

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Interactions of solar wind dynamic pressure (SWDP) discontinuities with Earth's magnetosphere cause geomagnetic Sudden Commencements (SCs). Typically, positive/negative SCs occur at low latitudes due to enhancements/reductions in SWDP.
Deeksha Rai, S. Tulasi Ram, B. Nilam, D. M. Oliveira, B. Remya, Anil Raghav, D. Chakrabarty, Abhishek Kumar, Shivam Parashar, Vipin K. Yadav, A. P. Dimri   +10 more
wiley   +1 more source

Interplanetary rotational discontinuities: From the solar wind to the magnetosphere through the magnetosheath [PDF]

Geophysical Research Letters, 2000
For the first time the evolution of interplanetary rotational discontinuities (RDs) are observed in the solar wind, in the magnetosheath and in the dayside magnetosphere by the ISEE 1‐2‐3 spacecraft. Interaction of a RD with the bow shock builds up a transient density event (TDE) in the magnetosheath, displaying two density peaks anticorrelated to the ...
D. Hubert, C. C. Harvey
openaire   +1 more source

A New Method for Probabilistic Spatiotemporal Forecasts of Solar Soft X‐Ray “S‐Class” (>X10) Superflares

Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.
Abstract Solar superflares of S‐class (>X10 in soft X‐rays) pose extreme space weather hazards, yet their prediction remains a fundamental challenge owing to their rapid and transient natures and the limitations of conventional event‐based forecasts. We introduce for the first time, a probabilistic spatiotemporal framework designed to identify extended
V. M. Velasco Herrera, G. Velasco Herrera, W. Soon, A. Özgüç, N. Babynets, A. Tlatov, M. Švanda, S. Qiu, S. Baliunas, B. Kotan, G. González González, L. A. Bautista Flores, M. Pazos   +12 more
wiley   +1 more source

Nonlinear Alfvén waves, discontinuities, proton perpendicular acceleration, and magnetic holes/decreases in interplanetary space and the magnetosphere: intermediate shocks? [PDF]

Nonlinear Processes in Geophysics, 2005
Alfvén waves, discontinuities, proton perpendicular acceleration and magnetic decreases (MDs) in interplanetary space are shown to be interrelated. Discontinuities are the phase-steepened edges of Alfvén waves.
B. T. Tsurutani, B. T. Tsurutani, G. S. Lakhina, J. S. Pickett, F. L. Guarnieri, F. L. Guarnieri, N. Lin, B. E. Goldstein   +7 more
doaj  

Interaction of the Interplanetary Shock and IMF Directional Discontinuity in the Solar Wind [PDF]

Journal of Geophysical Research: Space Physics, 2018
AbstractThe solar wind is not stationary and variations of the magnetic field magnitude and/or direction and plasma parameters are frequent. Interactions of fast forward shocks and interplanetary magnetic field discontinuities with the bow shock were analyzed in details theoretically as well as experimentally.
O. Goncharov, A. Koval, J. Šafránková, Z. Němeček, M. L. Stevens, A. Szabo, L. Přech   +6 more
openaire   +1 more source

Identifying MESSENGER Magnetospheric Boundary Crossings Using a Random Forest Region Classifier

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.
Abstract We present a new list of bow shock and magnetopause crossings based on automated region classification for the MESSENGER (Mercury Surface, Space Environment, Geochemistry and Ranging) mission. We fit a random forest model to magnetometer and ephemeris data to classify the solar wind, magnetosheath, and magnetosphere regions surrounding Mercury.
Daragh M. Hollman, Caitríona M. Jackman, Katarina Domijan, Charles F. Bowers, Simon J. Walker, Matthew J. Rutala, Alexandra R. Fogg   +6 more
wiley   +1 more source

Local Proton Heating at Magnetic Discontinuities in Alfvénic and Non-Alfvénic Solar Wind

The Astrophysical Journal
We investigate the local proton energization at magnetic discontinuities/intermittent structures and the corresponding kinetic signatures in velocity phase space in Alfvénic (high cross helicity) and non-Alfvénic (low cross helicity) wind streams ...
C. A. González, J. L. Verniero, R. Bandyopadhyay, A. Tenerani   +3 more
doaj   +1 more source

The Heliospheric Magnetic Field

Living Reviews in Solar Physics, 2013
The heliospheric magnetic field (HMF) is the extension of the coronal magnetic field carried out into the solar system by the solar wind. It is the means by which the Sun interacts with planetary magnetospheres and channels charged particles propagating ...
Mathew J. Owens, Robert J. Forsyth
doaj   +1 more source

Cluster and MMS Simultaneous Observations of Magnetosheath High Speed Jets and Their Impact on the Magnetopause

Frontiers in Astronomy and Space Sciences, 2020
When the supersonic solar wind encounters the Earth's magnetosphere a shock, called bow shock, is formed and the plasma is decelerated and thermalized in the magnetosheath downstream from the shock. Sometimes, however, due to discontinuities in the solar
C. Philippe Escoubet, K.-J. Hwang, S. Toledo-Redondo, S. Toledo-Redondo, L. Turc, S. E. Haaland, S. E. Haaland, N. Aunai, J. Dargent, Jonathan P. Eastwood, R. C. Fear, H. Fu, K. J. Genestreti, Daniel B. Graham, Yu V. Khotyaintsev, G. Lapenta, Benoit Lavraud, C. Norgren, D. G. Sibeck, A. Varsani, J. Berchem, A. P. Dimmock, G. Paschmann, M. Dunlop, M. Dunlop, Y. V. Bogdanova, Owen Roberts, H. Laakso, Arnaud Masson, M. G. G. T. Taylor, P. Kajdič, C. Carr, I. Dandouras, A. Fazakerley, R. Nakamura, Jim L. Burch, B. L. Giles, C. Pollock, C. T. Russell, R. B. Torbert   +39 more
doaj   +1 more source