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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 ...
Fan, Z., Lou, Y. -Q., Wang, J., Wang, S., Wang, Y. -M.   +4 more
core   +3 more sources

Integration of solar flare and coronal mass ejection event dataHarvard Dataverse [PDF]

Data in Brief
Solar flares and coronal mass ejections are solar transient events that can impact our technological infrastructure in near-Earth and Earth environments. While related, not all flares generate CMEs and there are a limited number of resources that connect
Anli Ji, Manolis K. Georgoulis, Berkay Aydin   +2 more
doaj   +2 more sources

Solar Coronal Mass Ejections [PDF]

Symposium - International Astronomical Union, 1990
In addition to the more or less steady solar wind, the Sun also ejects mass in highly time dependent events taking place in the corona once every few days at solar activity minimum and as often as three times a day at solar activity maximum (Hundhausen 1988, Low 1986).
A. J. Hundhausen, D. G. Sime, B. C. Low
openaire   +1 more source

Review of Fast Solar Jets and Coronal Mass Ejections [PDF]

Iranian Journal of Astronomy and Astrophysics, 2023
The Sun is a magnetically active star. It has a powerful magnetic field that shifts slightly from year to year until it reverses about every eleven years. The sun's magnetic field has many effects, the collection of which is called solar activity such as,
Sima Zeighami, Ehsan Tavabi
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

What Do Halo CMEs Tell Us about Solar Cycle 25?

The Astrophysical Journal Letters, 2023
It is known that the weak state of the heliosphere due to diminished solar activity in cycle 24 backreacted on coronal mass ejections (CMEs) to make them appear wider for a given speed. One of the consequences of the weak state of the heliosphere is that
Nat Gopalswamy, Grzegorz Michalek, Seiji Yashiro, Pertti Mäkelä, Sachiko Akiyama, Hong Xie   +5 more
doaj   +1 more source

Improving the Arrival Time Estimates of Coronal Mass Ejections by Using Magnetohydrodynamic Ensemble Modeling, Heliospheric Imager Data, and Machine Learning

The Astrophysical Journal, 2023
The arrival time prediction of coronal mass ejections (CMEs) is an area of active research. Many methods with varying levels of complexity have been developed to predict CME arrival.
Talwinder Singh, Bernard Benson, Syed A. Z. Raza, Tae K. Kim, Nikolai V. Pogorelov, William P. Smith, Charles N. Arge   +6 more
doaj   +1 more source

Deflection of Coronal Mass Ejections in Unipolar Ambient Magnetic Fields

The Astrophysical Journal, 2023
The trajectories of coronal mass ejections (CMEs) are often seen to deviate substantially from a purely radial propagation direction. Such deviations occur predominantly in the corona and have been attributed to “channeling” or deflection of the eruptive
Michal Ben-Nun, Tibor Török, Erika Palmerio, Cooper Downs, Viacheslav S. Titov, Mark G. Linton, Ronald M. Caplan, Roberto Lionello   +7 more
doaj   +1 more source

Evolution of the Radial Size and Expansion of Coronal Mass Ejections Investigated by Combining Remote and In Situ Observations

The Astrophysical Journal, 2023
A fundamental property of coronal mass ejections (CMEs) is their radial expansion, which determines the increase in the CME radial size and the decrease in the CME magnetic field strength as the CME propagates.
Bin Zhuang, Noé Lugaz, Nada Al-Haddad, Réka M. Winslow, Camilla Scolini, Charles J. Farrugia, Antoinette B. Galvin   +6 more
doaj   +1 more source

Energetics of solar coronal mass ejections [PDF]

Astronomy & Astrophysics, 2007
Aims: We investigate whether solar coronal mass ejections are driven mainly by coupling to the ambient solar wind or through the release of internal magnetic energy. Methods: We examine the energetics of 39 flux-rope like coronal mass ejections (CMEs) from the Sun using data in the distance range $\sim$ 2--20 $R_{\odot}$ from the Large Angle ...
Subramanian, Prasad, Vourlidas, Angelos
openaire   +2 more sources