Results 121 to 130 of about 62,110 (306)

Coronal dimming as a proxy for stellar coronal mass ejections [PDF]

Proceedings of the International Astronomical Union, 2019
AbstractSolar coronal dimmings have been observed extensively in the past two decades and are believed to have close association with coronal mass ejections (CMEs). Recent study found that coronal dimming is the only signature that could differentiate powerful flares that have CMEs from those that do not.
M. Jin, M. C. M. Cheung, M. L. DeRosa, N. V. Nitta, C. J. Schrijver, K. France, A. Kowalski, J. P. Mason, R. Osten   +8 more
openaire   +4 more sources

On the F‐Region Ionospheric Plasma Density Distribution and Irregularities Response During the May‐2024 Geomagnetic Storm Observed by LEO Satellites

Geophysical Research Letters, Volume 52, Issue 10, 28 May 2025.
Abstract This study investigates the F‐region plasma density and irregularities response during the May‐2024 storm using Swarm and Gravity Recovery and Climate Experiment Follow‐On (GRACE‐FO) data. Swarm‐B provided measurements at 11/23 LTs. Data from GRACE‐FO and Swarm‐A were collected at 05/17 and 07/19 LTs.
S. K. Das, C. Stolle, Y. Yamazaki, J. Rodríguez‐Zuluaga, X. Wan, G. Kervalishvili, J. Rauberg, J. Zhong, S. Perwitasari   +8 more
wiley   +1 more source

The Need for a Sub‐L1 Space Weather Research Mission: Current Knowledge Gaps on Coronal Mass Ejections

Space Weather
Over the past decades, missions at the L1 point have been providing solar wind and interplanetary magnetic field measurements that are necessary for forecasting space weather at Earth with high accuracy and a lead time of a few tens of minutes. Improving
Noé Lugaz, Nada Al‐Haddad, Bin Zhuang, Christian Möstl, Emma E. Davies, Charles J. Farrugia, Sahanaj Aktar Banu, Eva Weiler, Antoinette B. Galvin   +8 more
doaj   +1 more source

Solar Energetic Particle Events with Short and Long Onset Times

The Astrophysical Journal, 2023
Gradual solar energetic particle (SEP) events, usually attributed to shock waves driven by coronal mass ejections (CMEs), show a wide variety of temporal behaviors. For example, TO, the >10 MeV proton onset time with respect to the launch of the CME, has
Kosuke Kihara, Ayumi Asai, Seiji Yashiro, Nariaki V. Nitta   +3 more
doaj   +1 more source

ASYMMETRIC MAGNETIC RECONNECTION IN SOLAR FLARE AND CORONAL MASS EJECTION CURRENT SHEETS [PDF]

, 2012
We present two-dimensional resistive magnetohydrodynamic simulations of line-tied asymmetric magnetic reconnection in the context of solar flare and coronal mass ejection current sheets.
N. Murphy, M. Miralles, C. L. Pope, C. L. Pope, J. Raymond, H. Winter, K. Reeves, D. Seaton, A. A. Ballegooijen, Jintai Lin, Jintai Lin   +10 more
semanticscholar   +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

Predicting CO Cameron‐Band Auroral Emission at Venus Using VEx Electron Observations

Geophysical Research Letters, Volume 52, Issue 9, 16 May 2025.
Abstract Various types of auroral emissions have been observed at (partially) magnetized planets (e.g., Earth, Jupiter, and Mars). Auroral emissions have also been observed at Venus, an unmagnetized planet, by the Pioneer Venus Orbiter (PVO) and ground‐based telescopes.
Shaosui Xu, Rudy A. Frahm, Yingjuan Ma, David L. Mitchell, Janet G. Luhmann, Jean‐Claude Gérard, Lauriane Soret, Robert J. Lillis   +7 more
wiley   +1 more source

Direct Observations of a Shock Traversing Preceding Two Coronal Mass Ejections: Insights from Solar Orbiter, Wind, and STEREO Observations

The Astrophysical Journal Letters
The three successive coronal mass ejections (CMEs) that erupted from 2023 November 27–28, provide the first opportunity to shed light on the entire process of a shock propagating through, sequentially compressing, and modifying two preceding CMEs using ...
Yutian Chi, Chenglong Shen, Zhiyong Zhang, Mengjiao Xu, Dongwei Mao, Junyan Liu, Can Wang, Bingkun Yu, Jingyu Luo, Zhihui Zhong, Yuming Wang   +10 more
doaj   +1 more source

A CORONAL HOLE'S EFFECTS ON CORONAL MASS EJECTION SHOCK MORPHOLOGY IN THE INNER HELIOSPHERE [PDF]

, 2012
We use STEREO imagery to study the morphology of a shock driven by a fast coronal mass ejection (CME) launched from the Sun on 2011 March 7. The source region of the CME is located just to the east of a coronal hole. The CME ejecta is deflected away from
Brian E. Wood, Chin-Chun Wu, Alexis Rouillard, Alexis Rouillard, R. A. Howard, D. Socker   +5 more
semanticscholar   +1 more source

Ion‐Acoustic Waves and the Proton‐Alpha Streaming Instability at Collisionless Shocks

Geophysical Research Letters, Volume 52, Issue 9, 16 May 2025.
Abstract Ion‐acoustic waves are routinely observed at collisionless shocks and could be an important source of resistivity. The source of instability and the effects of the waves are not fully understood. We show, using Magnetospheric Multiscale mission observations and numerical modeling, that across low Mach number shocks a large relative drift ...
D. B. Graham, Yu. V. Khotyaintsev, A. Lalti   +2 more
wiley   +1 more source