Results 81 to 90 of about 15,087 (215)

Disparities in Magnetic Cloud Observations between Two Spacecraft Having Small Radial and Angular Separations near 1 au

The Astrophysical Journal
Studies for inferring the global characteristics of coronal mass ejections (CMEs) from multipoint local in situ observations have been undertaken previously, but limited studies have utilized measurements from multiple spacecraft with sufficiently small ...
Anjali Agarwal, Wageesh Mishra
doaj   +1 more source

Evidence linking coronal mass ejections with interplanetary magnetic clouds [PDF]

Using proxy data for the occurrence of those mass ejections from the solar corona which are directed earthward, we investigate the association between the post-1970 interplanetary magnetic clouds of Klein and Burlaga and coronal mass ejections.
Hildner, E., Wilson, R. M.
core   +1 more source

Testing the Empirical Shock Arrival Model using Quadrature Observations

, 2013
The empirical shock arrival (ESA) model was developed based on quadrature data from Helios (in-situ) and P-78 (remote-sensing) to predict the Sun-Earth travel time of coronal mass ejections (CMEs) [Gopalswamy et al. 2005a].
Gopalswamy, N., Mäkelä, P., Xie, H., Yashiro, S.   +3 more
core   +1 more source

Intense Ground Magnetic Perturbations During the 2024 May and October Geomagnetic Storms

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract The May and October 2024 geomagnetic storms represent two of the most intense space weather events of Solar Cycle 25. While differing in global intensity, both storms produced extreme ionospheric disturbances, including equatorward auroral expansion to mid‐latitudes and rapid geomagnetic variations (dH/dt $\text{dH}/\text{dt}$).
P. De Michelis, E. Consolini, F. Giannattasio, G. Consolini   +3 more
wiley   +1 more source

White Light Coronograph (WLC) and Ultra-Violet Coronal Spectrometer (UVCS) [PDF]

The white light coronagraph (WLC) and ultraviolet coronal spectrometer (UVCS) together reveal the corona and the roots of the solar wind from 1.5 to 6 solar radii from Sun center.
Moore, R. L.
core   +1 more source

Role of coronal mass ejections in the heliospheric Hale cycle [PDF]

, 2007
[1] The 11-year solar cycle variation in the heliospheric magnetic field strength can be explained by the temporary buildup of closed flux released by coronal mass ejections (CMEs).
Crooker, N. U., Hughes, W. J., Owens, M. J., Schwadron, Nathan A., Spence, Harlan E.   +4 more
core   +1 more source

Propagation of an Earth-directed coronal mass ejection in three dimensions

, 2010
Solar coronal mass ejections (CMEs) are the most significant drivers of adverse space weather at Earth, but the physics governing their propagation through the heliosphere is not well understood.
A Horwitz, A Horwitz, A Thernisien, B Kliem, B Vršnak, B Vršnak, B Vršnak, BE Wood, BP Filippov, C-H Lin, CA deKoning, CA Young, CJ Davis, CJ Davis, CJ Schrijver, CN Arge, D Odstrčil, DB Berdichevsky, E Chané, EKJ Kilpua, GW Pneuman, H Cremades, H Xie, H Xie, J Chen, JA González-Esparza, JP Byrne, M Banaszkiewicz, M Mierla, MJ Aschwanden, ML Kaiser, N Gopalswamy, N Gopalswamy, N Srivastava, P Démoulin, P Riley, PC Liewer, PJ Cargill, PJ Cargill, R Prangé, R Schwenn, RA Howard, RM MacQueen, S Yashiro, SA Maloney, SJ Tappin, SK Antiochos, TA Howard, TA Howard, TG Moran, V Bothmer, VJ Pizzo, XP Zhao, Y Liu   +53 more
core   +1 more source

Energy Conversion Pathways Inside Kelvin‐Helmholtz Vortices

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Energy transfer, cross‐scale coupling, and dissipation in astrophysical plasmas remain fundamental unresolved problems. The velocity‐shear–driven Kelvin–Helmholtz instability (KHI), ubiquitous in plasmas, is a key multiscale mechanism enabling plasma mixing, particle energization and the solar wind–magnetosphere coupling, making it a critical ...
A. Settino, Z. Vörös, L. Sorriso‐Valvo, C. Simon‐Wedlund, O. W. Roberts, R. Nakamura   +5 more
wiley   +1 more source

Constraining the Mass Loss and the Kinetic Energy of Stellar Coronal Mass Ejections with Solar Far-ultraviolet Flares

The Astrophysical Journal
Stellar eruptive events, such as flares and coronal mass ejections (CMEs), can affect planetary habitability by disturbing the stability of their atmospheres.
Nuri Park, Evgenya L. Shkolnik, Joe Llama   +2 more
doaj   +1 more source

CME dynamics using STEREO & LASCO observations: the relative importance of Lorentz forces and solar wind drag

, 2017
We seek to quantify the relative contributions of Lorentz forces and aerodynamic drag on the propagation of solar coronal mass ejections (CMEs). We use Graduated Cylindrical Shell (GCS) model fits to a representative set of 38 CMEs observed with the SOHO
Bothmer, Volker, Sachdeva, Nishtha, Subramanian, Prasad, Vourlidas, Angelos   +3 more
core   +1 more source