Results 21 to 30 of about 6,461 (252)

Periodicities in solar coronal mass ejections [PDF]

Monthly Notices of the Royal Astronomical Society, 2003
Mid-term quasi-periodicities in solar coronal mass ejections (CMEs) during the most recent solar maximum cycle 23 are reported here for the first time using the four-year data (February 5, 1999 to February 10, 2003) of the Large Angle Spectrometric Coronagraph (LASCO) onboard the Solar and Heliospheric Observatory (SOHO).
Lou, Y. -Q., Wang, Y. -M., Fan, Z., Wang, S., Wang, J.   +4 more
openaire   +2 more sources

Simulation study on the propagation process of coronal mass ejection

地球与行星物理论评, 2022
Coronal mass ejection (CME) is a kind of space weather phenomenon caused by the intense activity of the sun. Important issues of concern to the space weather community include understanding the propagation and evolution of a particular CME in the corona ...
Mengxuan Ma, Fang Shen, Yousheng Liu
doaj   +1 more source

Proton beam velocity distributions in an interplanetary coronal mass ejection [PDF]

Annales Geophysicae, 2009
The plasma and magnetic-field instruments on the Helios 2 spacecraft, which was on 3 April 1979 located at 0.68 AU, detected an interplanetary coronal mass ejection (ICME) that revealed itself by the typical signature of magnetic field rotation.
E. Marsch, S. Yao, C.-Y. Tu
doaj   +1 more source

The response of the magnetosphere to the passage of a coronal mass ejection on March 20-21 1990 [PDF]

, 1997
International audienceThe geomagnetic response to the passage of a coronal mass ejection (CME) is studied. The passage of the CME resulted in a storm sudden commencement (SSC) at 2243 UT on March 20 1990 with disturbed magnetic activity during the ...
B. A. Emery (7615478), Orr, D., Knipp, D. J., T. K. Yeoman (7601525), T. K. Yeoman, J. R. Taylor (4674265), Hughes, T. J., Solovyev, S. I., Lühr, H., S. I. Solovyev, H. Lühr, Taylor, J.R., Knipp, D.J., Solovyev, S.I., Yeoman, T. K., B. A. Emery, D. J. Knipp (7615481), J. R. Taylor, D. J. Knipp, D. Orr (7615484), T. J. Hughes, H. Luhr (7612334), Lester, M., Taylor, J. R., T. J. Hughes (7615490), Emery, B.A., Emery, B. A., M. Lester, M. Lester (7589660), Hughes, T.J., S. I. Solovyev (7615487), D. Orr, Yeoman, T.K.   +32 more
core   +1 more source

Planar magnetic structures in coronal mass ejection-driven sheath regions [PDF]

Annales Geophysicae, 2016
Planar magnetic structures (PMSs) are periods in the solar wind during which interplanetary magnetic field vectors are nearly parallel to a single plane.
E. Palmerio, E. K. J. Kilpua, N. P. Savani, N. P. Savani   +3 more
doaj   +1 more source

Coronal dimmings associated with coronal mass ejections on the solar limb [PDF]

The Astrophysical Journal, 2020
<p>We studied 43 coronal dimming events associated with Earth-directed coronal mass ejections (CMEs) that were observed in quasi-quadrature by the SDO and STEREO satellites. We derived the properties of the dimmings as observed above the limb by ...
Galina Chikunova, Karin Dissauer, Tatiana Podladchikova, Astrid M. Veronig   +3 more
openaire   +3 more sources

Coordinated Interplanetary Scintillation Observations in Japan and Russia for Coronal Mass Ejection Events in Early September 2017 [PDF]

, 2019
Interplanetary (IP) shocks traveling between the Sun and the Earth’s orbit were clearly detected in interplanetary scintillation (IPS) observations made at Toyokawa (Japan) and Pushchino (Russia), in association with two halo coronal mass ejections (CMEs)
Tokumaru, Munetoshi, Chashei, Igor, Iwai, Kazumasa, Tyul’bashev, Sergey, Fujiki, Ken’ichi   +4 more
core   +1 more source

The source and engine of coronal mass ejections [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2019
Coronal mass ejections (CMEs) are large-scale expulsions of coronal plasma and magnetic field propagating through the heliosphere. Because CMEs are observed by white-light coronagraphs which, by design, occult the solar disc, supporting disc observations (e.g. in EUV, soft X-rays, Halpha and radio) must be employed for the study of their source regions
Manolis K. Georgoulis, Alexander Nindos, Hongqi Zhang   +2 more
openaire   +2 more sources

Current sheets at three-dimensional magnetic nulls:effect of compressibility [PDF]

, 2007
The nature of current sheet formation in the vicinity of three-dimensional (3D) magnetic null points is investigated. The particular focus is upon the effect of the compressibility of the plasma on the qualitative and quantitative properties of the ...
Bhattacharjee, A., Pontin, D. I., D. I. Pontin, Pontin, DI., A. Bhattacharjee, Bhattacharjee, Amitava, Galsgaard, Klaus, K. Galsgaard   +7 more
core   +1 more source

Deciphering the Slow-rise Precursor of a Major Coronal Mass Ejection

The Astrophysical Journal Letters, 2023
Coronal mass ejections are explosive plasma phenomena prevalently occurring on the Sun and probably on other magnetically active stars. However, how their pre-eruptive configuration evolves toward the main explosion remains elusive.
X. Cheng, C. Xing, G. Aulanier, S. K. Solanki, H. Peter, M. D. Ding   +5 more
doaj   +1 more source