Results 91 to 100 of about 9,578 (225)

Stellar winds driven by Alfven waves [PDF]

Models of stellar winds were considered in which the dynamic expansion of a corona is driven by Alfven waves propagating outward along radial magnetic field lines.
Belcher, J. W., Olbert, S.
core   +1 more source

Relative Contributions of Solar Wind Dynamic Pressure and Interplanetary Electric Field on the Early Positive Part of Main Phase of Geomagnetic Storms

Space Weather, Volume 24, Issue 3, March 2026.
Abstract The important early declining part of the main phase (MP) of geomagnetic storms in SYM‐H (and Dst) from positive main phase onset (MPO) to 0‐level of SYM‐H was somehow missed in the treatment of the storms. We included the missed part (or revised the storms) by raising the 0‐level of SYM‐H to MPO‐level, and showed that the inclusion is ...
Jijin K. Raj, N. Balan, Qing‐He Zhang, Y. Otsuka, K. Shiokawa, Zan‐Yang Xing, V. Manu, B. Nilam, Yu‐Zhang Ma, Yong Wang   +9 more
wiley   +1 more source

The Energy Content of Alfvén Waves in the Stratified Solar Atmosphere

The Astrophysical Journal
Alfvén waves propagating in a vertically stratified plasma, such as those traveling from the solar photosphere to the corona, are partially reflected due to the gradient in the Alfvén speed.
Roberto Soler
doaj   +1 more source

Review article: MHD wave propagation near coronal null points of magnetic fields

, 2012
We present a comprehensive review of MHD wave behaviour in the neighbourhood of coronal null points: locations where the magnetic field, and hence the local Alfven speed, is zero. The behaviour of all three MHD wave modes, i.e.
A. W. Hood, A.B. Hassam, A.B. Hassam, A.M.D. McDougall, A.R. Inglis, A.R. Inglis, A.W. Hood, B. Kliem, B. Kliem, B. Pontieu De, B. Roberts, B. Roberts, C. Beveridge, C.E. DeForest, C.E. Parnell, C.E. Parnell, C.E. Parnell, C.M. Bender, D. Banerjee, D. Berghmans, D. Tsiklauri, D. Tsiklauri, D.A. Murray, D.B. Jess, D.I. Pontin, D.I. Pontin, D.S. Brown, D.S. Brown, D.W. Longcope, E. O’Shea, E.R. Priest, E.R. Priest, E.R. Priest, F. Oberhettinger, G. Aulanier, G. Fruit, G.A. Gary, G.J. Rickard, G.R. Cook, I. De Moortel, I. Moortel De, I. Moortel De, I. Moortel De, I. Moortel De, I. Ugarte-Urra, I.J. Craig, I.J. Craig, I.J. Craig, I.J. Craig, I.J. Craig, I.J.D. Craig, I.N. Sneddon, J. A. McLaughlin, J. Heyvaerts, J.A. Kilmchuck, J.A. McLaughlin, J.A. McLaughlin, J.A. McLaughlin, J.A. McLaughlin, J.A. McLaughlin, J.A. McLaughlin, J.V. Hollweg, J.W. Dungey, K. Galsgaard, K. Galsgaard, K. Galsgaard, K. Galsgaard, K. Galsgaard, K.G. McClements, K.G. McClements, L. Ofman, L. Ofman, L. Ofman, L. Ofman, L. Ofman, M. Mathioudakis, M. Mathioudakis, M.J. Aschwanden, M.J. Aschwanden, N. Ben Ayed, P. MacNeice, P.M. Edwin, P.S. Cally, R. Erdélyi, R. Erdélyi, R. Erdélyi, R. Erdélyi, R. Linden Van der, R.A. Cairns, R.A. Harrison, R.M. Close, S. Landi, S. Régnier, S. Tomczyk, S.I. Braginskii, S.K. Antiochos, S.K. Antiochos, S.V. Bulanov, S.V. Bulanov, T. Doorsselaere Van, T. Forbes, T.D. Arber, T.G. Cowling, T.J. Bogdan, T.J. Okamoto, T.J. Wang, T.J. Wang, U. Mitra-Kraev, V.M. Nakariakov, V.M. Nakariakov, V.M. Nakariakov, V.M. Nakariakov, V.M. Nakariakov, V.M. Nakariakov, V.S. Titov, Y. Taroyan, Y. Taroyan, Y. Taroyan   +117 more
core   +1 more source

10 May 2024 Gannon Storm: Connecting Energy Flux With Field Aligned Currents and Cross Polar Cap Potential

Space Weather, Volume 24, Issue 3, March 2026.
Abstract A simulation of the 10 May 2024 geomagnetic storm is used to investigate the theory of cross polar cap potential (CPCP) saturation in Earth's magnetosphere‐ionosphere system. THEMIS B (ARTEMIS P1) satellite magnetic field and plasma measurements at lunar distance upstream in the solar wind drives the Space Weather Modeling Framework (SWMF) in ...
A. Brenner, T. I. Pulkkinen, Eliah F. M. T. São Sabbas, D. G. Sibeck, D. T. Welling, A. J. Ridley, V. S. Gowtam, M. R. Hairston   +7 more
wiley   +1 more source

Weak compressible magnetohydrodynamic turbulence in the solar corona

, 2005
This Letter presents a calculation of the power spectra of weakly turbulent Alfven waves and fast magnetosonic waves ("fast waves") in low-beta plasmas.
Benjamin D. G. Chandran, J. Shebalin, V. E. Zakharov, V. E. Zakharov   +3 more
core   +1 more source

Simulated Operational Testing of the Prototype Implementation of the SOFIE Model: The 2025 Space Weather Prediction Testbed Exercise

Space Weather, Volume 24, Issue 3, March 2026.
Abstract The CLEAR Space Weather Center of Excellence's solar energetic particle (SEP) model, SOlar wind with FIeld lines and Energetic particles (SOFIE), was run and evaluated on‐site during the Space Weather Prediction Testbed (SWPT) exercise at the National Oceanic and Atmospheric Administration's Space Weather Prediction Center (NOAA/SWPC) in May ...
Weihao Liu, Lulu Zhao, Igor V. Sokolov, Kathryn Whitman, Tamas I. Gombosi, Nishtha Sachdeva, Eric T. Adamson, Hazel M. Bain, Claudio Corti, M. Leila Mays, Michelangelo Romano, Carina R. Alden, Madeleine M. Anastopulos, Mary E. Aronne, Janet E. Barzilla, Wesley T. Cook, Shawn D. Dahl, Hannah Hermann, Anthony J. Iampietro, A. Steve Johnson, Elizabeth A. Juelfs, Melissa R. Kane, Jonathan D. Lash, Kimberly Moreland, Briana K. Muhlestein, Teresa Nieves‐Chinchilla, Edward Semones, James F. Spann, Earl M. Spencer, Luke A. Stegeman, Christopher J. Stubenrauch, Kenneth L. Tegnell   +31 more
wiley   +1 more source

Alfvén Wave Propagation in the Io Plasma Torus

Geophysical Research Letters, 2019
Io, the most volcanically active body in the solar system, fuels a plasma torus around Jupiter with dissociation products of SO2 at a rate of ~1,000 kg/s.
P. C. Hinton, F. Bagenal, B. Bonfond
doaj   +1 more source

Empirical Results on the Magnetic Prandtl Number in the Slow Solar Wind Based on In Situ Measurements

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract The magnetic Prandtl number in the slow solar wind is estimated by using magnetic and velocity Reynolds numbers. The Prandtl number quantifies the ratio of kinetic to magnetic diffusion rates in a plasma, and indicates which process dominates the transport dynamics in a fluid.
T. J. E. Hand, O. W. Roberts, X. Li, T. Knight, Y. Narita, Z. Vörös, A. Pitňa   +6 more
wiley   +1 more source

On the Correlation between Alfvén Waves and Auroral Radio Emissions in the Jovian System

The Astrophysical Journal
Jupiter’s powerful aurorae reflect intense energy dissipation in the magnetosphere–ionosphere system. Recent studies reveal that solar wind compression systematically enhances auroral emission, while the mechanism is not yet fully understood.
Yuening Chen, Zhonghua Yao, Shengyi Ye
doaj   +1 more source