Results 81 to 90 of about 223 (145)

Coronal mass ejection precursors in Sun-like stars: Flux rope modelling and coronal signatures

Astronomy & Astrophysics
Context. Coronal mass ejections (CMEs) are among the most energetic manifestations of solar and stellar activity. In the Sun, they play a central role in space weather, while in more active stars, the solar paradigm indicates that they should be even ...
Cécere M., Costa A., Amazo-Gómez E. M., Alvarado-Gómez J. D.   +3 more
doaj   +1 more source

Sun-as-a-star Observations of Obscuration Dimmings Caused by Filament Eruptions

The Astrophysical Journal
Filament eruptions often lead to coronal mass ejections (CMEs) on the Sun and are one of the most energetic eruptive phenomena in the atmospheres of other late-type stars.
Yu Xu, Hui Tian, Astrid M. Veronig, Karin Dissauer   +3 more
doaj   +1 more source

History of two mass loss processes in VY CMa. [PDF]

Proc Int Astron Union, 2023
Quintana-Lacaci G, Velilla L, Fonfría JP, Cernicharo J, Castro-Carrizo A, Agúndez M, Decin L.   +6 more
europepmc   +1 more source

Somerset Maugham's Failings

Critical Quarterly, Volume 68, Issue 3, Page 52-65, October 2026.
Allan Hepburn
wiley   +1 more source

X-Ray, UV, and Optical Observations of Proxima Centauri’s Stellar Cycle

The Astrophysical Journal
Proxima Cen (GJ 551; dM5.5e) is one of only about a dozen fully convective stars known to have a stellar cycle, and the only one to have long-term X-ray monitoring.
Bradford J. Wargelin, Steven H. Saar, Zackery A. Irving, Jonathan D. Slavin, Peter Ratzlaff, José-Dias do Nascimento Jr   +5 more
doaj   +1 more source

A stellar prominence eruption associated with a white-light flare on an M dwarf observed simultaneously by LAMOST and TESS

Astronomy & Astrophysics
Context. Stellar coronal mass ejections (CMEs) are regarded as major drivers of space weather in exoplanetary systems. Their large-scale expulsions of magnetised plasma may erode planetary atmospheres and influence the long-term evolution of close-in ...
Cai Chang, Lu Hong-Peng, Zhang Li-Yun, Su Tian-Hao, Shi Yu   +4 more
doaj   +1 more source

Extreme energetic particle events by superflare-asssociated CMEs from solar-like stars. [PDF]

Sci Adv, 2022
Hu J, Airapetian VS, Li G, Zank G, Jin M.   +4 more
europepmc   +1 more source

High-time-cadence Spectroscopy and Photometry of Stellar Flares on M-dwarf YZ Canis Minoris with Seimei Telescope and TESS. II. Statistical Properties of Blue/Red Asymmetries in the Hα Line

The Astrophysical Journal
M-dwarfs frequently produce flares, and their associated coronal mass ejections (CMEs) may threaten the habitability of close-in exoplanets. M-dwarf flares sometimes show prominence eruption signatures, observed as blue/red asymmetries in the H α line ...
Yuto Kajikiya, Kosuke Namekata, Yuta Notsu, Kai Ikuta, Hiroyuki Maehara, Bunei Sato, Daisaku Nogami   +6 more
doaj   +1 more source

High-time-cadence Spectroscopy and Photometry of Stellar Flares on M dwarf YZ Canis Minoris with the Seimei Telescope and TESS. I. Discovery of Rapid and Short-duration Prominence Eruptions

The Astrophysical Journal
M dwarfs show frequent flares and associated coronal mass ejections (CMEs) may significantly impact close-in habitable planets. M dwarf flares sometimes show blue/red asymmetries in the H α line profile, suggesting prominence eruptions as an early stage ...
Yuto Kajikiya, Kosuke Namekata, Yuta Notsu, Hiroyuki Maehara, Bunei Sato, Daisaku Nogami   +5 more
doaj   +1 more source

The DIRECD Coronal Mass Ejection Direction Catalog: Three-dimensional Propagation Inferred from Coronal Dimmings

The Astrophysical Journal Supplement Series
Coronal mass ejections (CMEs) are among the primary drivers of space weather disturbances at Earth, yet their early propagation in the low corona remains poorly constrained owing to occultation and projection effects inherent to coronagraph observations.
Shantanu Jain, Tatiana Podladchikova, Karin Dissauer, Astrid M. Veronig, Amaia Razquin   +4 more
doaj   +1 more source