Results 71 to 80 of about 5,923,990 (195)

PARTICLE ACCELERATION AT COROTATING INTERACTION REGIONS IN THE HELIOSPHERE

The Astrophysical Journal, 2014
Hybrid simulations are performed to investigate the dynamics of both solar wind protons and interplanetary pickup ions (PUIs) around the corotating interaction region (CIR). The one-dimensional system is applied in order to focus on processes in the direction of CIR propagation.
openaire   +1 more source

MHD-simulation of corotating interaction regions in the heliosphere using different boundary conditions and codes

Solar-Terrestrial Physics
The paper presents the results of MHD modeling of corotating interaction regions (CIRs) at distances of 0.1 AU from the Sun (inner boundary) to much larger distances (20–30 AU) in two variants in which the magnetic field on the photosphere (1) is ...
Pavlov Dmitry, Krainev Mikhail, Kalinin Mikhail, Kodukov Alexander, Xi Luo, Fang Shen, Yuji Zhu   +6 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

Finding Novel Precursors for Solar Wind Stream Interaction Regions With Interpretable Deep Learning

Space Weather, Volume 24, Issue 10, October 2026.
Abstract Solar wind stream interaction regions (SIRs) drive recurrent geomagnetic storms, yet most existing catalogs rely on expert inspection and simple thresholds that are subjective and can miss events with complex morphologies. We present SIREN (SIR Encoder Network), a lightweight Transformer‐based model for per‐timestep SIR detection from in situ ...
Prateek Mayank, Yogesh, Enrico Camporeale, D. Chakrabarty, Lan K. Jian, Gregory G. Howes, Thomas E. Berger   +6 more
wiley   +1 more source

Observational Effects of Corotating Interaction Regions in OB stars [PDF]

Symposium - International Astronomical Union, 2004
The stellar winds of OB stars are perturbed by Corotating Interaction Regions (CIRs). We present a 3D radiative transfer model which predicts that variations should occur in the infrared and millimetre continuum.
openaire   +1 more source

On the response of Martian Ionosphere to the Passage of a Corotating Interaction Region: MAVEN Observations [PDF]

Journal of Geophysical Research: Space Physics, 2019
AbstractThe response of Martian ionosphere to the passage of corotating interaction region (CIR) of June 2015 is studied using observations from several instruments aboard the Mars Atmosphere and Volatile EvolutioN (MAVEN) mission. An intense CIR arrived at Mars on 22 June 2015, during which the upstream solar wind and interplanetary magnetic field ...
C. Krishnaprasad, Smitha V. Thampi, Anil Bhardwaj   +2 more
openaire   +2 more sources

Impact of Junction Angle on Density‐Driven Secondary Flow and Mixing Rates at River Confluences: A Numerical Investigation

Water Resources Research, Volume 62, Issue 10, October 2026.
Abstract It is now well understood that a small difference in the density (Δρ) $({\Delta }\rho )$ of two rivers can cause density‐driven streamwise vortices (SOVs) to form and their mixing interface to tilt downstream of their confluence. However, much less knowledge exists pertaining to how these processes are affected by other key confluence ...
Abdelrahman Hosny Abdou, Jason Duguay, Pascale Biron, Jay Lacey   +3 more
wiley   +1 more source

Modeling transport of energetic particles in corotating interaction regions: A case study [PDF]

Journal of Geophysical Research: Space Physics, 2016
AbstractWe investigate energetic particle transport in corotating interaction regions (CIRs) through a case study. The CIR event we study occurred on 8 February 2008 and was observed by both the Advanced Composition Explorer (ACE) and the twin Solar TErrestrial RElations Observatory (STEREO) B spacecraft. An in situ reverse shock was observed by STEREO
Zhao, Lulu, Li, Gang, Ebert, R. W., Dayeh, M. A., Desai, M. I., Mason, G. M., Wu, Zhao, Chen, Yao   +7 more
openaire   +2 more sources

Extreme Geomagnetic Storm on the Early Earth Induced by Corotating Interaction Regions from the Young Sun

The Astrophysical Journal
Recent multiwavelength observations of young solar analogs suggest that the young Sun in the first 600 Myr was a magnetically active star that produced an X-ray and extreme-UV bright corona, fast, massive stellar wind, and energetic eruptive events ...
Dibyendu Sur, Vladimir S. Airapetian
doaj   +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