Results 41 to 50 of about 309 (172)

Experimental evidence for coronal mass ejection suppression in strong stellar magnetic fields [PDF]

Solar coronal mass ejections (CME) are routinely observed, but as of yet there exist few convincing detections of stellar CMEs. A reason for this could be the stronger magnetic fields of these stars, compared to that of our Sun, would prevent CME to form and escape.
S. N. Chen, K. Burdonov, W. Yao, J. D. Alvarado-Gómez, C. Argiroffi, J. Béard, S. Bolaños, R. Bonito, A. Ciardi, O. Cohen, J. J. Drake, S. Orlando, J. Fuchs   +12 more
  +5 more sources

Stellar Coronal Mass Ejections with HWO: A Science Case Concept [PDF]

The primary mission of the Habitable World Observatory (HWO) will be to constrain the prevalence of life on Earth-like planets. These planets will be subject to impacts by energetic particles generated from coronal mass ejection (CME) shocks that can dramatically deplete ozone, a key biosignature gas.
R. O. Parke Loyd, James Paul Mason, Ivey Davis, Kevin France, Meng Jin, Karin Dissauer   +5 more
  +5 more sources

Occurrence rate of stellar Type II radio bursts from a 100 star-year search for coronal mass ejections [PDF]

Astronomy & Astrophysics
Coronal mass ejections (CMEs) are major drivers of space weather in the Solar System, but their occurrence rate on other stars is unknown. A characteristic (deca-)metric radio burst with a time-frequency drift, known as a Type II radio burst, is a key observational signature of CMEs. We searched a total of 107 years of stellar data
David C. Konijn, H. K. Vedantham, Cyril Tasse, T. W. Shimwell, M. J. Hardcastle, J. R. Callingham, Ekaterina Ilin, A. Drabent, P. Zarka, F. van der Tak, Sanne Bloot   +10 more
  +8 more sources

High energy laser & systems to neutralise stellar coronal mass ejections (CME) plasma

Aeronautics and Aerospace Open Access Journal
With CME plasma and shockwave travelling at 600+ km/sec, active methods such as high energy electron lasers (HEL) and mirrors are effective at making contact with ionised atoms in CME. Electrons pulsed from kW to MW laser(s) could polarise ionised atoms such as Fe16+, O7/8+, Mg, He2+,etc to fill valence pairs.
Kolemann Lutz, Terry Trevino
openalex   +2 more sources

Erratum: “From Starspots to Stellar Coronal Mass Ejections—Revisiting Empirical Stellar Relations” (2021, ApJ, 907, 89) [PDF]

The Astrophysical Journal
Konstantin Herbst, Athanasios Papaioannou, Vladimir S. Airapetian, Dimitra Atri   +3 more
doaj   +2 more sources

Detection of a High-velocity Prominence Eruption Leading to a CME Associated with a Superflare on the RS CVn-type Star V1355 Orionis

The Astrophysical Journal, 2023
Stellar coronal mass ejections (CMEs) have recently received much attention for their impacts on exoplanets and stellar evolution. Detecting prominence eruptions, the initial phase of CMEs, as the blueshifted excess component of Balmer lines is a ...
Shun Inoue, Hiroyuki Maehara, Yuta Notsu, Kosuke Namekata, Satoshi Honda, Keiichi Namizaki, Daisaku Nogami, Kazunari Shibata   +7 more
doaj   +1 more source

The source and engine of coronal mass ejections [PDF]

Philosophical Transactions Series A, Mathematical, Physical, and Engineering Sciences, 2019
Manolis K Georgoulis, A Nindos, Hongqi Zhang   +2 more
exaly   +2 more sources

Where are the stellar coronal mass ejections?

, 2022
Stellar flares and coronal mass ejections (CMEs) can have serious effects on their surroundings: they can erode or completely destroy atmospheres of orbiting planets over time and also have high importance in stellar evolution. Most of the stellar CME detections in the literature are single events found serendipitously sparse for statistical ...
Vida, K., Kriskovics, L, Leitzinger, M., Odert, P., Greimel, R., Seli, B., Görgei, A., Kővári, Zs., Oláh, K.   +8 more
openaire   +1 more source

Full Velocities and Propagation Directions of Coronal Mass Ejections Inferred from Simultaneous Full-disk Imaging and Sun-as-a-star Spectroscopic Observations

The Astrophysical Journal, 2023
Coronal mass ejections (CMEs) are violent ejections of magnetized plasma from the Sun that can trigger geomagnetic storms, endanger satellite operations, and destroy electrical infrastructures on the Earth.
Hong-peng Lu, Hui Tian, He-chao Chen, Yu Xu, Zhen-yong Hou, Xian-yong Bai, Guang-yu Tan, Zi-hao Yang, Jie Ren   +8 more
doaj   +1 more source

Unified Relationship between Cold Plasma Ejections and Flare Energies Ranging from Solar Microflares to Giant Stellar Flares

The Astrophysical Journal, 2023
We often find spectral signatures of chromospheric cold plasma ejections accompanied by flares in a wide range of spatial scales in the solar and stellar atmospheres.
Yuji Kotani, Kazunari Shibata, Takako T. Ishii, Daiki Yamasaki, Kenichi Otsuji, Kiyoshi Ichimoto, Ayumi Asai   +6 more
doaj   +1 more source