Results 41 to 50 of about 5,952,631 (141)

Suprathermal particles from corotating interaction regions during the first perihelion pass of Solar Orbiter [PDF]

, 2021
The first orbit of Solar Orbiter provided comprehensive measurements of six corotating interaction regions (CIRs) within 1 au. Five of these CIRs were also observed by ACE at 1 au, allowing for comparisons of the suprathermal ion intensities and spectra ...
Freiherr von Forstner, J., Rodríguez Polo, Óscar, Allen, R., M. Yedla, Rodríguez-Pacheco Martín, Javier, C. Martin, S. Boden, Xu, Z., Xu, Zigong, Wimmer-Schweingruber, R., G. B. Andrews, Freiherr Von Forstner, J.L., Espinosa Lara, Francisco, Boden, S., Andrews, G. B., Z. Xu, A. Ravanbakhsh, Ravanbakhsh, A., Terasa, J., C. E. Schlemm, J. C. Terasa, Gómez Herrero, Raúl, Espinosa Lara, F., Wimmer-Schweingruber, R. F., G. C. Ho, H. Seifert, Andrews, G., Prieto Mateo, Manuel, Schlemm, C. E., Martin, C., Polo, O., Mason, Glenn M., J. R. Hayes, J. Rodríguez-Pacheco, W. J. Lees, Lees, W. J., Lees, W., O. R. Polo, Kulkarni, S. R., Pacheco, D., Tyagi, K., Berger, L., Sánchez Prieto, Sebastián, Schlemm, C., Berger, Lars, Cernuda Cangas, Ignacio Manuel, R. Gómez-Herrero, Allen, Robert C., Terasa, J. C., I. Cernuda, S. R. Kulkarni, Rodríguez-Pacheco, J., Hayes, J., Yedla, M., Hayes, J. R., R. C. Allen, K. Tyagi, F. Espinosa Lara, Prieto, M., Ho, G., Seifert, H., R. F. Wimmer-Schweingruber, L. Berger, G. M. Mason, J. L. Freiherr von Forstner, Kulkarni, S., D. Pacheco, Cernuda, I., Ho, George C., M. Prieto, S. Sánchez-Prieto, Mason, G., Sánchez-Prieto, S., Gómez-Herrero, R.   +73 more
core   +1 more source

On the Effects of the Solar Wind Structure in the Global Distribution of dBH/dt ${\text{dB}}_{H}/\text{dt}$ Spikes During Geomagnetic Storms

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract Variations in the solar wind, particularly those associated with interplanetary coronal mass ejections (ICMEs) and high‐speed streams (HSSs), drive geomagnetic disturbances that produce rapid changes in the ground magnetic field. These variations, commonly quantified by the time derivative of the horizontal magnetic field dBH/dt $\left({\text ...
José P. Marchezi, Amy Keesee, Michael Coughlan, Raman Mukundan, Victor Pinto, Ligia A. Da Silva, Livia R. Alves, Hyunju Connor, Don Hampton   +8 more
wiley   +1 more source

Numerical MHD models of stream interaction regions (SIRs) and corotating interaction regions (CIRs) using sunRunner3D: comparison with observations

Monthly Notices of the Royal Astronomical Society
ABSTRACT In this work, we present numerical simulations of Stream Interaction Regions (SIRs) and Corotating Interaction Regions (CIRs) using the sunrunner3d tool that employs as a coronal model the boundary conditions obtained by corhel/mas with the pluto code that describes the global 3D structure of the solar wind using the ...
E Aguilar-Rodriguez, J J González-Avilés, P Riley, M Ben-Nun, M Rodriguez-Martinez, R F González, M A Perez-Rivera, A C Raga-Rasmussen   +7 more
openaire   +1 more source

Longitudinal Variation of Ionospheric Irregularities and Response of the Ionosphere During 10–13 May and 10–13 October 2024 Geomagnetic Storms

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract We examine the response of the ionosphere to the 10–13 May 2024 and 10–13 October 2024 geomagnetic storms, the two recent great geomagnetic storms of solar cycle 25. We identified the occurrence of ionospheric irregularities during the two geomagnetic storms.
Valence Habyarimana, Mark B. Moldwin, John Bosco Habarulema, Sharon Aol, Jean Claude Uwamahoro, Teshome Dugassa, Daniel Okoh, Solomon Otoo Lomotey   +7 more
wiley   +1 more source

Polytropic Behavior in Corotating Interaction Regions: Evidence of Alfvénic Heating

The Astrophysical Journal Letters
Corotating interaction regions (CIRs) are recurring structures in the solar wind, characterized by interactions between fast and slow solar wind streams that compress and heat plasma. This study investigates the polytropic behavior of distinct regions in
M. A. Dayeh, M. J. Starkey, G. Livadiotis, S. T. Hart, A. A. Shmies, R. C. Allen, R. Bučik, H. A. Elliott   +7 more
doaj   +1 more source

Modeling of CME and CIR driven geomagnetic storms by means of artificial neural networks

Contributions to Geophysics and Geodesy, 2015
A model of geomagnetic storms based on the method of artificial neural networks (ANN) combined with an analytical approach is presented in the paper.
Miloš REVALLO, Fridrich VALACH, Pavel HEJDA, Josef BOCHNÍČEK   +3 more
doaj   +1 more source

Highly Asymmetric Magnetosphere‐Ionosphere‐Thermosphere Coupling at Uranus

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Magnetosphere‐Ionosphere‐Thermosphere (MIT) coupling is widely considered the dominant energy source responsible for maintaining the elevated thermospheric temperatures observed at the giant planets. At Uranus, the strongly tilted and asymmetric magnetic field produces a highly asymmetric magnetospheric configuration that may fundamentally ...
M. Acevski, N. Achilleos, A. Masters, C. Smith, P. I. Tiranti   +4 more
wiley   +1 more source

Effects of corotating interaction regions on ULYSSES high energy particles [PDF]

, 1995
Since June 1992 the Kiel Electron Telescope on board ULYSSES measures variations of more than 10% in the fluxes of high energy H and He showing a periodicity of about 26 days in coincidence with the passage of corotating interaction regions. (CIR).
Raviart, A., Droege, W., Kunow, H.
core   +1 more source

TRACERS Small‐Scale Field‐Aligned Currents and Intense GPS Amplitude and Phase Scintillations in the Nightside Auroral Region

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract We present conjugate observations of ionospheric small‐scale magnetic perturbations (dB) $(dB)$ and GPS scintillations from the Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites (TRACERS) and the Canadian High Arctic Ionospheric Network (CHAIN) during a storm‐time substorm on 9 August 2025 in the nightside auroral region ...
Yangyang Shen, Robert J. Strangeway, Hao Cao, James M. Weygand, Jiashu Wu, Anthony McCaffrey, P. T. Jayachandran, Daniel Billett, Magnus F. Ivarsen, Christopher Watson, Sheng Tian, Marit Oieroset, David Miles   +12 more
wiley   +1 more source

Introduction to special issue on high speed solar wind streams and geospace interactions (HSS-GI) [PDF]

, 2009
This special issue of the Journal of Atmospheric and Solar-Terrestrial Physics is devoted to research into high speed solar wind streams (HSSs) and their effects on the region of near-Earth space commonly known as ‘geospace’.
Morley, S.K., Denton, M.H, Horne, Richard B, Borovsky, J.E., Tsurutani, B.T., Denton, M.H., Horne, R.B., McPherron, R.L.   +7 more
core   +1 more source