Results 91 to 100 of about 53,020 (220)
The Astrophysical JournalSpatially resolved X-ray observations are the key to understanding electron acceleration in solar flares. Currently, the underlying processes that efficiently energize solar flare particles are poorly constrained. Abundant flare observations suggest that
Morgan Stores +4 more
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The Astrophysical JournalThe disparate nature of the thermal–nonthermal energy partition during flares, particularly during weak flares, is still an open issue. Following the Neupert effect, quantifying the relative yield of X-ray emission in different energy bands can enable ...
Arun Kumar Awasthi +5 more
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Some studies on low-frequency signal in relation to X-ray flares and climatic conditions
Annales GeophysicaeThe statistical behaviour of the sudden enhancement in signal strength (SES) in relation to solar X-ray flares has been studied for the near east-west propagation of 40 kHz radio waves from Sanwa (36°11'N; 139°51'E) in Japan to Calcutta (22°34 ...
S. K. Sarkar, B. K. De
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X-Ray/Radio Quasiperiodic Pulsations Associated with Plasmoids in Solar Flare Current Sheets
The Astrophysical JournalPlasmoids (or magnetic islands) are believed to play an important role in the onset of fast magnetic reconnection and particle acceleration during solar flares and eruptions.
Pankaj Kumar +2 more
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Solar Flares as Electron Accelerators: Toward a Resolution of the Acceleration Efficiency Issue
The Astrophysical JournalA major open issue concerning the active Sun is the effectiveness with which magnetic reconnection accelerates electrons in flares. A paper published by Nature in 2022 used microwave observations to conclude that the Sun is an almost ideal accelerator ...
Anna Volpara +4 more
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Real-time detection of solar flares from ground-based VLF data
Journal of Space Weather and Space ClimateA method for real-time solar flare detection and characterization using ground-based Very Low Frequency (VLF, 15–45 kHz) data is presented. The D-region, the ionosphere’s lowest region, is monitored by VLF waves propagating in the Earth-Ionosphere ...
Teysseyre Pauline +2 more
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Investigating the Soft X-Ray Spectra of Solar Flare Onsets
The Astrophysical JournalAbstract In this study, we present the analysis of six solar flare events that occurred in 2022, using new data from the third-generation Miniature X-Ray Solar Spectrometer, also known as the Dual-zone Aperture X-ray Solar Spectrometer (DAXSS).
Anant Telikicherla +2 more
openaire +3 more sources
The Astrophysical JournalWe present the X-ray quiescent and flaring properties from a unique, 7 days multiwavelength observing campaign on the M1 flare star AU Mic. Combining the XMM-Newton X-ray spectra with the chromospheric line and broadband near-UV (NUV) and optical ...
Yuta Notsu +5 more
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