Results 91 to 100 of about 243 (164)

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

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
openaire   +1 more source

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

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.
Chen, S. N., Burdonov, K., Yao, W., Alvarado-Gómez, J. D., Argiroffi, C., Béard, J., Bolanõs, S., Bonito, R., Ciardi, A., Cohen, O., Drake, J. J., Orlando, S., Fuchs, J.   +12 more
openaire   +2 more sources

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

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, Harish K. Vedantham, Cyril Tasse, Timothy W. Shimwell, Martin J. Hardcastle, Joseph R. Callingham, Ekaterina Ilin, Alexander Drabent, Philippe Zarka, Floris F. S. van der Tak, Sanne Bloot   +10 more
openaire   +4 more sources

Formation of Amino Acids and Carboxylic Acids in Weakly Reducing Planetary Atmospheres by Solar Energetic Particles from the Young Sun. [PDF]

Life (Basel), 2023
Kobayashi K, Ise JI, Aoki R, Kinoshita M, Naito K, Udo T, Kunwar B, Takahashi JI, Shibata H, Mita H, Fukuda H, Oguri Y, Kawamura K, Kebukawa Y, Airapetian VS.   +14 more
europepmc   +1 more source

Multiwavelength Campaign Observations of a Young Solar-type Star, EK Draconis. II. Understanding Prominence Eruption through Data-driven Modeling and Observed Magnetic Environment

The Astrophysical Journal
EK Draconis, a nearby young solar-type star (G1.5V, 50–120 Myr), is known as one of the best proxies for inferring the environmental conditions of the young Sun.
Kosuke Namekata, Kai Ikuta, Pascal Petit, Vladimir S. Airapetian, Aline A. Vidotto, Petr Heinzel, Jiří Wollmann, Hiroyuki Maehara, Yuta Notsu, Shun Inoue, Stephen Marsden, Julien Morin, Sandra V. Jeffers, Coralie Neiner, Rishi R. Paudel, Antoaneta A. Avramova-Boncheva, Keith Gendreau, Kazunari Shibata   +17 more
doaj   +1 more source

Effects of Transient Stellar Emissions on Planetary Climates of Tidally Locked Exo-Earths

The Astronomical Journal
Space weather events in exoplanetary environments sourced from transient host star emissions, including stellar flares, coronal mass ejections, and stellar proton events, can substantially influence a planet's habitability and atmospheric evolution ...
Howard Chen, Paolo De Luca, Assaf Hochman, Thaddeus D. Komacek   +3 more
doaj   +1 more source

Assessing natural global catastrophic risks. [PDF]

Nat Hazards (Dordr), 2023
Baum SD.
europepmc   +1 more source

The evolution of the solar wind. [PDF]

Living Rev Sol Phys, 2021
Vidotto AA.
europepmc   +1 more source

Minifilament Eruptions as the Last Straw to Break the Equilibrium of a Giant Solar Filament

The Astrophysical Journal
Filament eruptions are magnetically driven violent explosions commonly observed on the Sun and late-type stars, sometimes leading to monster coronal mass ejections that directly affect the nearby planets’ environments.
Hechao Chen, Hui Tian, Quanhao Zhang, Chuan Li, Chun Xia, Xianyong Bai, Zhenyong Hou, Kaifan Ji, Yuanyong Deng, Xiao Yang, Ziyao Hu   +10 more
doaj   +1 more source