Results 41 to 50 of about 205 (182)

Coronal streamer belt asymmetries and seasonal solar wind variations deduced from Wind and Ulysses data [PDF]

Journal of Geophysical Research: Space Physics, 1997
Solar wind measurements from Wind during March 1995 are combined with those from Ulysses' fast latitude scan to construct a map of the streamer belt. On the timescale of coronal change, the map is nearly a snapshot view of solar wind speed contours threaded by the trace of the heliospheric current sheet (HCS) in the ±30° heliolatitude range.
N. U. Crooker, A. J. Lazarus, J. L. Phillips, J. T. Steinberg, A. Szabo, R. P. Lepping, E. J. Smith   +6 more
openaire   +1 more source

The New Geomagnetic Monitoring Network in China: Insights From the 2024 Mother's Day Superstorm

Space Weather, Volume 24, Issue 2, February 2026.
Abstract China has established a ground‐based network system, that is the Chinese Meridian Project (CMP), to continuously monitor the geomagnetic field. The superstorm in May 2024 was analyzed using the CMP data. The negative peak of the horizontal geomagnetic field (Bh) during the storm main phase at different CMP stations varied between −449 nT and ...
Jing Wang, Yue Yan, Bingxian Luo, Chunming Liu, Hui Li, Jiaojiao Zhang, Yanhong Chen, Chen Wu, Zihan Wu, Ziqian Liu, Xin Wang, Ercha Aa, Xianzhi Ao   +12 more
wiley   +1 more source

Periodic Variations in Visible Light Brightness as Tracers of Fine Coronal Structures

The Astrophysical Journal
The quiescent or dynamic nature of fine-scale raylike features in the Sun corona, observed in visible light, is still an open question. Here, we show that most of the daily and hourly periodic variations in visible light brightness of the high corona (up
Nathalia Alzate, Simone Di Matteo
doaj   +1 more source

The Chinese Radio Telescope Array for Interplanetary Scintillation Monitoring

Space Weather, Volume 24, Issue 1, January 2026.
Abstract Solar flares, coronal mass ejections (CMEs) and enegertic particles, etc., are the driving sources that may cause catastrophic space weathers. It is desirable to obtain information of solar eruptions like flares and CMEs, etc., propagating from the Sun to the near‐Earth space.
Yihua Yan, Wei Wang, Jin Fan, Ming Xiong, Zhijun Chen, Linjie Chen, Cang Su, Sha Li, Jun Cheng, Jing Du, Xueshang Feng   +10 more
wiley   +1 more source

A BROKEN SOLAR TYPE II RADIO BURST INDUCED BY A CORONAL SHOCK PROPAGATING ACROSS THE STREAMER BOUNDARY [PDF]

The Astrophysical Journal, 2012
12 pages, 5 figures, accepted by ApJ ...
Kong, Xiang-Liang, Chen, Yao, Li, Gang, Feng, Shi-Wei, Song, Hong-Qiang, Guo, Fan, Jiao, Fang-Ran   +6 more
openaire   +2 more sources

CNN‐Based Model for 3D CME Parameter Prediction – A Proof of Concept

Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 4, December 2025.
Abstract Accurate 3D reconstruction of coronal mass ejections (CMEs) is essential for understanding their propagation and improving space weather forecasts. In this study, we present a proof‐of‐concept deep learning framework that predicts seven parameters from synthetic multi‐view coronagraph images.
Harshita Gandhi, Huw Morgan, Cory Thomas
wiley   +1 more source

The Properties of Small Magnetic Flux Ropes inside the Solar Wind Come from Coronal Holes, Active Regions, and Quiet Sun

The Astrophysical Journal, 2023
The origination and generation mechanisms of small magnetic flux ropes (SMFRs), which are important structures in solar wind, are not clearly known. In the present study, 1993 SMFRs immersed in coronal holes, active regions, and quiet-Sun solar wind are ...
Changhao Zhai, Hui Fu, Jiachen Si, Zhenghua Huang, Lidong Xia   +4 more
doaj   +1 more source

TEMPO at Night: Lightning Flashes and On‐Orbit Instrument Performance

Earth and Space Science, Volume 12, Issue 11, November 2025.
Abstract The abundant nighttime (twilight) spectra from October 2024 are used for characterization of on‐orbit instrument performance of the Tropospheric Emissions: Monitoring of Pollution (TEMPO, a geostationary imaging spectrometer). We select 250 lightning flashes and measure the flash sizes and flash positions in 6 spectral domains spread across ...
Sergey V. Marchenko, James L. Carr, Heesung Chong, John C. Houck, Xiong Liu, David E. Flittner, Joanna Joiner, Brian D. Baker, James K. Lasnik, Dennis K. Nicks   +9 more
wiley   +1 more source

Evidence of Continuous Reconnection along a Helmet Streamer Current Sheet Observed by WISPR on Parker Solar Probe

The Astrophysical Journal
Parker Solar Probe's second solar encounter from 2019 March 30 to April 11 occurred during a period when the corona had a simple magnetic structure and relatively flat heliospheric current sheet (HCS), which was in the field of view of the Wide-field ...
Paulett C. Liewer, Brendan M. Gallagher, Guillermo Stenborg, Mark G. Linton, Jiong Qiu, Angelos Vourlidas, Madison L. Ascione, Marco Velli   +7 more
doaj   +1 more source

The evolution of our understanding of coronal mass ejections

Frontiers in Astronomy and Space Sciences, 2023
The unexpected observation of a sudden expulsion of mass through the solar corona in 1971 opened up a new field of interest in solar and stellar physics.
Russell A. Howard, Angelos Vourlidas, Guillermo Stenborg   +2 more
doaj   +1 more source