Results 91 to 100 of about 16,204 (260)

Evolution of Anemone AR NOAA 10798 and the Related Geo-Effective Flares and CMEs

, 2008
We present a detailed examination of the features of the Active Region (AR) NOAA 10798. This AR generated coronal mass ejections (CMEs) that caused a large geomagnetic storm on 24 August 2005 with the minimum Dst index of -216 nT.
Alexander, Asai, Asai, Ayumi Asai, Bruzek, Delaboudiniére, Domingo, Forsyth, Gopalswamy, Gopalswamy, Gopalswamy, Gopalswamy, Gopalswamy, Gosling, Hale, Ishii, Kataoka, Kazunari Shibata, Ken'ichi Fujiki, Kojima, Kokubun, Kundu, Kurokawa, Lepping, Liu, Liu, Low, López Fuentes, Manoharan, Martin, Matsumoto, Mitsuo Oka, Mukai, Munro, Nagashima, Nat Gopalswamy, Rust, Ryuho Kataoka, Saito, Saito, Scherrer, Sheeley, Sheeley, Sheeley, Shibata, Shibata, Shibata, Takahashi, Takako T. Ishii, Terasawa, Tian, Tokumaru, Tokumaru, Tokumaru, Tousey, Verma, Vourlidas, Wang, Wang, Yashiro, Yokoyama, Yokoyama, Young, Zhang   +63 more
core   +1 more source

Upwelling Metallic Ions Producing Valley Region Irregularities Over Low Latitude During the 2025 New Year Magnetic Storm

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract Valley region irregularities (VRIs) have been previously investigated using radar, ionosonde, and rocket‐borne in situ observations. In this paper, based on a joint observational experiment by lidar and radars performed in Hainan, China, we report a case of low‐latitude VRIs generated in association with uplifted metallic ions for the first ...
Jing Jiao, Wenjie Sun, Guozhu Li, Yajun Zhu, Biqiang Zhao, Guotao Yang, Tatsuhiro Yokoyama, Septi Perwitasari, Lianhuan Hu, Jianfei Liu, Haiyong Xie, Zhaoguo Huang, Xiaofei Wu, Chunxiao Yan   +13 more
wiley   +1 more source

Deflection and Rotation of CMEs from Active Region 11158

, 2017
Between the 13 and 16 of February 2011 a series of coronal mass ejections (CMEs) erupted from multiple polarity inversion lines within active region 11158.
A. Isavnin, A. Thernisien, A. Vourlidas, A.F.R. Thernisien, B. Gui, B.J. Lynch, B.P. Filippov, C. Kay, C. Kay, C. Kay, C. Kay, C. Kay, C. Kay, C. Shen, E. Hildner, E.K.J. Kilpua, H. Cremades, I.G. Richardson, J. Schou, J. Zhang, J.R. Lemen, J.T. Gosling, K. Tziotziou, K.H. Schatten, M.D. Altschuler, M.L. Mays, N. Gopalswamy, N. Gopalswamy, N.P. Savani, O. Olmedo, O. Panasenco, O. Panasenco, P. Liewer, R.M. MacQueen, T. Nieves-Chinchilla, T. Nieves-Chinchilla, T. Török, W.D. Pesnell, W.T. Thompson, W.T. Thompson, Y. Fan   +40 more
core   +1 more source

Rapid Reversal of Hemispheric Asymmetry in the Intensity of EIA Crests During the Geomagnetic Storm of 23 April 2023: A Unique Observation From GOLD

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract This study, using the peak electron density of Ionospheric F‐region from the Global‐scale Observations of the Limb and Disk reports, for the first time, a unique phenomenon: the rapid reversal of the intensity of the Equatorial Ionization Anomaly (EIA) crests between the hemispheres during the main phase of 23 April 2023, geomagnetic storm ...
K. Shimna, R. K. Archana, C. Vineeth, Gang Lu, T. K. Pant, M. S. M. Vijayan   +5 more
wiley   +1 more source

Two Energy Release Processes for CMEs: MHD Catastrophe and Magnetic Reconnection

, 2007
It remains an open question how magnetic energy is rapidly released in the solar corona so as to create solar explosions such as solar flares and coronal mass ejections (CMEs).
Aly, Antiochos, Chen, Chen, Chen, Choe, Ding, Flyer, Forbes, Forbes, Forbes, Forbes, Hu, Isenberg, Jing, Krall, L.D. Xia, Li, Lin, Lin, Lin, Low, Low, MacQueen, Peng, Qiu, Sun, Van Tend, Van Tend, Y. Chen, Y.Q. Hu, Yan, Zhang, Zhang   +33 more
core   +1 more source

Solar flares, coronal mass ejections and solar energetic particle event characteristics

Journal of Space Weather and Space Climate, 2016
A new catalogue of 314 solar energetic particle (SEP) events extending over a large time span from 1984 to 2013 has been compiled. The properties as well as the associations of these SEP events with their parent solar sources have been thoroughly ...
Papaioannou Athanasios, Sandberg Ingmar, Anastasiadis Anastasios, Kouloumvakos Athanasios, Georgoulis Manolis K., Tziotziou Kostas, Tsiropoula Georgia, Jiggens Piers, Hilgers Alain   +8 more
doaj   +1 more source

Solar Coronal Mass Ejection and Post–Coronal Mass Ejection Blob Formation in Two-fluid Simulations

The Astrophysical Journal
Abstract A coronal mass ejection (CME) and post-CME blob phenomena in the solar atmosphere, associated with shear flow and convergent flow perturbations in the photosphere, are investigated using a resistive two-fluid (electron–ion) code. It is found that there are notable deviations between the two-fluid and previous magnetohydrodynamic
J. C. Du, Z. W. Ma
openaire   +2 more sources

Solar origins of coronal mass ejections [PDF]

The large scale properties of coronal mass ejections (CMEs), such as morphology, leading edge speed, and angular width and position, have been cataloged for many events observed with coronagraphs on the Skylab, P-78, and SMM spacecraft.
Kahler, Stephen
core   +1 more source

On flare-CME characteristics from Sun to Earth combining remote-sensing image data with in-situ measurements supported by modeling

, 2017
We analyze the well observed flare-CME event from October 1, 2011 (SOL2011-10-01T09:18) covering the complete chain of action - from Sun to Earth - for a better understanding of the dynamic evolution of the CME and its embedded magnetic field.
Dissauer, K., Hinterreiter, J., Rodriguez, L., Temmer, M., Thalmann, J. K., Tschernitz, J., Veronig, A. M.   +6 more
core   +1 more source

Coronal Mass Ejections and Solar Radio Emissions (invited) [PDF]

PLANETARY RADIO EMISSIONS VII, 2011
Three types of low-frequency nonthermal radio bursts are associated with coronal mass ejections (CMEs): Type III bursts due to accelerated electrons propagating along open magnetic field lines, type II bursts due to electrons accelerated in shocks, and type IV bursts due to electrons trapped in post-eruption arcades behind CMEs.
openaire   +1 more source