Results 131 to 140 of about 3,305 (196)

Solar Orbiter reveals persistent magnetic reconnection in medium-scale filament eruptions

Astronomy & Astrophysics
Solar filament eruptions play a key role in driving space weather, yet their fine-scale evolution remains poorly understood due to observational limitations. Using unprecedented high-resolution observations from Solar Orbiter’s Extreme Ultraviolet Imager (105 km/pixel) and Polarimetric and Helioseismic Imager, we detect persistent magnetic reconnection
Song Tan, Alexander Warmuth, Frédéric Schuller, Yuandeng Shen, Daniel F. Ryan, Daniele Calchetti, Johann Hirzberger, Takayoshi Oba, Artem Ulyanov, Gherardo Valori   +9 more
openaire   +2 more sources

Disentangling Thermal and Abundance Characteristics in a Solar Flare Using SDO/AIA, Hinode/XRT, and MinXSS-1 Observations

The Astrophysical Journal
We investigate the thermal properties of a solar flare by the observations of the soft X-ray Telescope on board Hinode and the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory. Our analysis reveals a tenuous but hot plasma cloud
Xiaoyan Xie, Anna Chen, Crisel Suarez, Katharine K. Reeves, Soumya Roy, Christopher S. Moore, Nishu Karna, Joy Velasquez   +7 more
doaj   +1 more source

Earth-affecting solar transients: a review of progresses in solar cycle 24. [PDF]

Prog Earth Planet Sci, 2021
Zhang J, Temmer M, Gopalswamy N, Malandraki O, Nitta NV, Patsourakos S, Shen F, Vršnak B, Wang Y, Webb D, Desai MI, Dissauer K, Dresing N, Dumbović M, Feng X, Heinemann SG, Laurenza M, Lugaz N, Zhuang B.   +18 more
europepmc   +1 more source

High-resolution Imaging Spectroscopy of a Tiny Sigmoidal Minifilament Eruption

The Astrophysical Journal
Minifilament eruptions producing small jets and microflares have mostly been studied based on coronal observations at extreme-ultraviolet and X-ray wavelengths. This study presents chromospheric plasma diagnostics of a quiet-Sun minifilament of size ∼ 2″
Jiasheng Wang, Jeongwoo Lee, Jongchul Chae, Wenda Cao, Haimin Wang   +4 more
doaj   +1 more source

Multiwavelength Campaign Observations of a Young Solar-type Star, EK Draconis. I. Discovery of Prominence Eruptions Associated with Superflares

The Astrophysical Journal
Young solar-type stars frequently produce superflares, serving as a unique window into the young Sun-Earth environments. Large solar flares are closely linked to coronal mass ejections (CMEs) associated with filament/prominence eruptions, but ...
Kosuke Namekata, Vladimir S. Airapetian, Pascal Petit, Hiroyuki Maehara, Kai Ikuta, Shun Inoue, Yuta Notsu, Rishi R. Paudel, Zaven Arzoumanian, Antoaneta A. Avramova-Boncheva, Keith Gendreau, Sandra V. Jeffers, Stephen Marsden, Julien Morin, Coralie Neiner, Aline A. Vidotto, Kazunari Shibata   +16 more
doaj   +1 more source

Vortex Motions in the Solar Atmosphere: Definitions, Theory, Observations, and Modelling. [PDF]

Space Sci Rev, 2023
Tziotziou K, Scullion E, Shelyag S, Steiner O, Khomenko E, Tsiropoula G, Canivete Cuissa JR, Wedemeyer S, Kontogiannis I, Yadav N, Kitiashvili IN, Skirvin SJ, Dakanalis I, Kosovichev AG, Fedun V.   +14 more
europepmc   +1 more source

Sun-as-a-star Analysis of the Solar Eruption Source Region Using Hα Spectroscopic Observations of CHASE

The Astrophysical Journal
Sun-as-a-star analyses serve as a bridge for comparative studies on solar and stellar activities. To investigate the typical Sun-as-a-star H α temporal spectral characteristics in solar eruption source regions, we analyzed five different types of solar ...
Xiaofeng Liu, Yijun Hou, Ying Li, Ye Qiu, Ting Li, Yingjie Cai, Shihao Rao, Junyi Zhang, Chuan Li   +8 more
doaj   +1 more source

Unexpected self-lofting and dynamical confinement of volcanic plumes: the Raikoke 2019 case. [PDF]

Sci Rep, 2022
Khaykin SM, de Laat ATJ, Godin-Beekmann S, Hauchecorne A, Ratynski M.   +4 more
europepmc   +1 more source

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

Eruption-Related Ultraviolet Irradiance Enhancements Associated with Flares. [PDF]

Sol Phys
Majury L, Dominique M, Milligan R, Talpeanu DC, Dammasch I, Berghmans D.   +5 more
europepmc   +1 more source