Results 1 to 10 of about 215 (136)

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

open access: yesProgress in Earth and Planetary Science, 2021
This review article summarizes the advancement in the studies of Earth-affecting solar transients in the last decade that encompasses most of solar cycle 24. It is a part of the effort of the International Study of Earth-affecting Solar Transients (ISEST)
Jie Zhang   +18 more
doaj   +2 more sources

Statistical Study of Ejections in Coronal Hole Regions As Possible Sources of Solar Wind Switchbacks and Small-scale Magnetic Flux Ropes

open access: yesThe Astrophysical Journal Letters, 2023
The omnipresence of transient fluctuations in the solar wind, such as switchbacks (SBs) and small-scale magnetic flux ropes (SMFRs), have been well observed by the in situ observation of Parker Solar Probe (PSP), yet their sources are not clear. Possible
Nengyi Huang   +2 more
doaj   +1 more source

The Relationship Between Solar Wind Dynamic Pressure Pulses and Solar Wind Turbulence

open access: yesFrontiers in Physics, 2021
Solar wind dynamic pressure pulses (DPPs) are small-scale plasma structures with abrupt and large-amplitude plasma dynamic pressure changes on timescales of seconds to several minutes.
Mengsi Ruan   +10 more
doaj   +1 more source

Multifrequency Microwave Imaging of Weak Transients from the Quiet Solar Corona

open access: yesThe Astrophysical Journal, 2023
Understanding the dynamics of the quiet solar corona is important for answering key questions including the coronal heating problem. Multiple studies have suggested small-scale magnetic-reconnection events may play a crucial role.
Surajit Mondal, Bin Chen, Sijie Yu
doaj   +1 more source

An Unsupervised Machine Learning-based Algorithm for Detecting Weak Impulsive Narrowband Quiet Sun Emissions and Characterizing Their Morphology

open access: yesThe Astrophysical Journal, 2023
The solar corona is extremely dynamic. Every leap in observational capabilities has been accompanied by unexpected revelations of complex dynamic processes.
Shabbir Bawaji   +4 more
doaj   +1 more source

The Closest View of a Fast Coronal Mass Ejection: How Faulty Assumptions Near Perihelion Lead to Unrealistic Interpretations of PSP/WISPR Observations

open access: yesThe Astrophysical Journal Letters, 2023
We report on the closest view of a coronal mass ejection (CME) observed by the Parker Solar Probe (PSP)/ Wide-field Imager for Parker Solar PRobe (WISPR) instrument on 2022 September 5, when PSP was traversing from a distance of 15.3 to 13.5 R _⊙ from ...
Ritesh Patel   +5 more
doaj   +1 more source

Coronal transients during two solar minima: their source regions and interplanetary counterparts [PDF]

open access: yesProceedings of the International Astronomical Union, 2011
AbstractWe have investigated two full solar rotations belonging to two distinct solar minima, in the frame of two coordinated observational and research campaigns. The nearly uninterrupted gathering of solar coronal data since the beginning of the SOHO era offers the exceptional possibility of comparing two solar minima for the first time, with regard ...
Cremades, H., Mandrini, C.H., Dasso, S.
openaire   +3 more sources

Reconnection-generated Plasma Flows in the Quasi-separatrix Layer in Localized Solar Corona

open access: yesThe Astrophysical Journal, 2023
Multiwavelength observations of the propagating disturbances (PDs), discovered by Atmospheric Imaging Assembly (AIA) on board Solar Dynamics Observatory (SDO), are analyzed to determine their driving mechanism and physical nature. Two magnetic strands in
Sripan Mondal   +10 more
doaj   +1 more source

Broadening of looplike solar coronal transients

open access: yesThe Astrophysical Journal, 1985
The broadening of the tops of nine outwardly expanding looplike coronal mass-ejection transients observed during 1973-1974 and 1980 has been examined. Five of the nine transients exhibit increased breadth with time (height); although the rates vary widely, no event shows an increase which can be fitted by a power-law form with a greater-than-linear ...
R. M. MacQueen, D. M. Cole
openaire   +1 more source

Lateral Confinement and the Remarkably Self-similar Nature of Coronal Pseudostreamer Mass Ejections

open access: yesThe Astrophysical Journal, 2023
Coronal mass ejections (CMEs) that originate from pseudostreamers, which separate coronal holes of the same magnetic polarity, are characterized by a narrow (∼5°–30°), fan-shaped appearance in white-light coronagraph images.
Y.-M. Wang, P. Hess
doaj   +1 more source

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