Results 91 to 100 of about 14,687 (203)

Natural Generation of Alfvén Waves from Three-dimensional Bursty Interchange Magnetic Reconnection in the Solar Corona

The Astrophysical Journal Letters
Alfvén waves play a significant role in solar coronal heating, solar wind acceleration, and Alfvénic turbulence formation. As a fundamental process, magnetic reconnection has long been credited as a crucial source of Alfvén waves.
Liping Yang, Jiansen He, Xueshang Feng, Daniel Verscharen, Fan Guo, Hui Li, Hui Tian, Wenya Li, Fang Shen, Chuanpeng Hou, Mijie Shi, Honghong Wu, Ming Xiong   +12 more
doaj   +1 more source

Solar Radio Wide‐Band Spectroscopy and Imaging Facilities of the Chinese Meridian Project Phase II

Space Weather, Volume 23, Issue 11, November 2025.
Abstract Solar eruptions, including flares and coronal mass ejections, are the most energetic phenomena in the solar system. These explosive events accelerate high‐energy particles and generate electromagnetic radiation from radio to gamma‐ray wavelengths, producing heliospheric disturbances and acting as primary drivers of space weather hazards.
Yihua Yan, Wei Wang, Linjie Chen, Jin Fan, Yao Chen, Shuwang Chang, Fabao Yan, Lihong Geng, Sha Li, Cang Su, Zhijun Chen, Chengming Tan, Bing Wang, Guang Lu, Chuanyang Li, Zhichao Zhou, Fei Liu, Suli Ma, Jun Cheng, Jing Du   +19 more
wiley   +1 more source

Ubiquitous Small-scale Extreme-ultraviolet Upflow-like Events above Network Regions Observed by the Solar Orbiter/Extreme Ultraviolet Imager

The Astrophysical Journal
Universal small-scale solar activity in the quiet region is suggested to be a potential source of solar wind and the upper solar atmosphere. Here, with the high-resolution 174 Å imaging observations from the Solar Orbiter/Extreme Ultraviolet Imager, we ...
Yadan Duan, Hechao Chen, Zhenyong Hou, Zheng Sun, Yuandeng Shen   +4 more
doaj   +1 more source

Eruptions from solar ephemeral regions as an extension of the size distribution of coronal mass ejections

, 2009
Observations of the quiet solar corona in the 171A (~1MK) passband of the Transition Region and Coronal Explorer (TRACE) often show disruptions of the coronal part of small-scale ephemeral bipolar regions that resemble the phenomena associated with ...
Aschwanden, Aschwanden, Audard, Carolus J. Schrijver, Hagenaar, Hagenaar, Moore, Reinard, Riley, Robbrecht, Schrijver, Wang   +11 more
core   +1 more source

Auroral Ionosphere Responses to Solar Wind Perturbations: A Case Study Utilizing the Polar Regions Monitoring Subsystem of the Chinese Meridian Project

Space Weather, Volume 23, Issue 11, November 2025.
Abstract The Earth's polar regions serve as a natural conduit for solar wind energy and momentum, transferring this energy into the geospace and driving complex magnetosphere‐ionosphere‐thermosphere coupling processes that have significant global space weather and space climate impacts.
Jianjun Liu, Fang He, Xiangcai Chen, Bin Li, Lin Zheng, Xingxin Zhao, Ziyuan Zhu, Zejun Hu, Dehong Huang, Hongqiao Hu   +9 more
wiley   +1 more source

PRELIMINARY RESULTS OF INTERFEROMETRIC OBSERVATIONS OF THE QUIET SUN AT THE FREQUENCIES 8 – 32 MHZ

Odessa Astronomical Publications, 2018
We studied a radio emission of the quiet Sun at decameter wavelengths to determine its angular dimensions. Observations were conducted using interferometers composed of antenna sections of the UTR-2 radio telescope.
V. A. Shepelev, V. N. Melnik, R. V. Vashchishin   +2 more
doaj   +1 more source

A Statistical Analysis of the Solar Phenomena Associated with Global EUV Waves [PDF]

, 2017
Solar eruptions are the most spectacular events in our solar system and are associated with many different signatures of energy release including solar flares, coronal mass ejections, global waves, radio emission and accelerated particles. Here, we apply
Carley, Eoin P., Graham, Georgina, Long, David M., Murphy, Pearse, Pérez-Suárez, David   +4 more
core   +2 more sources

Solar Wind and Geomagnetic Conditions That Lead to the Largest Relativistic Electron Fluxes in GPS Orbit

Space Weather, Volume 23, Issue 11, November 2025.
Abstract Relativistic electrons are an important space weather hazard, being a major source of radiation damage to satellites and posing a risk to humans in space. We use approximately 20 years of data from the US Global Positioning System (GPS) satellite NS41 to determine the characteristics of the geomagnetic storms that lead to the largest ...
Nigel P. Meredith, Jacob Bortnik, Man Hua, Thomas E. Cayton, Mark A. Clilverd, Tom A. Daggitt, Kaine A. Bunting   +6 more
wiley   +1 more source

Structure of the Solar Atmosphere: A Radio Perspective

Frontiers in Astronomy and Space Sciences, 2020
Solar radio emission has been providing information about the Sun for over half a century. In order to fully exploit this information, one needs to have a broader view of the solar atmosphere, which cannot be provided by radio observations alone.
Costas E. Alissandrakis
doaj   +1 more source

Non-linear propagation of kink waves to the solar chromosphere

, 2015
Small-scale magnetic field concentrations (magnetic elements) in the quiet Sun are believed to contribute to the energy budget of the upper layers of the Sun's atmosphere, as they are observed to support a large number of MHD modes. In recent years, kink
Giannattasio, F., Jafarzadeh, S., Stangalini, M.   +2 more
core   +1 more source