Results 71 to 80 of about 995 (183)

Global response of Magnetic field and Ionosonde observations to intense solar flares on 6 and 10 September 2017

open access: yesE3S Web of Conferences, 2018
Intense X-ray fluxes during solar flares are known to cause enhanced ionization in the Earth’s ionospheric D, E and F region. This sudden change of ionospheric electron density profile is serious problem to radio wave communication and navigation system.
Fujimoto Akiko   +2 more
doaj   +1 more source

Examining the Capability of the VLF Technique for Nowcasting Solar Flares Based on Ground Measurements in Antarctica

open access: yesRemote Sensing
Measurements of Very-Low-Frequency (VLF) transmitter signals have been widely used to investigate the effects of various space weather events on the D-region ionosphere, including nowcasting solar flares.
Shiwei Wang   +14 more
doaj   +1 more source

Statistics of Solar White-light Flares. I. Optimization and Application of Identification Methods

open access: yesThe Astrophysical Journal
White-light flares (WLFs) are energetic activity in the stellar atmosphere. However, observed solar WLFs are relatively rare compared to stellar WLFs or solar flares observed at other wavelengths, which limits our further understanding of solar/stellar ...
Yingjie Cai   +3 more
doaj   +1 more source

FlareCast: A Solar Flare Forecasting System Utilizing Deep Bayesian Neural Networks and the Concept of Machine Learning Operations

open access: yesThe Astrophysical Journal Supplement Series
In this paper, we present FlareCast, a novel solar flare forecasting system developed under the framework of machine learning operations (MLOps) and made available as an online service to the community.
Jiameng Lv   +12 more
doaj   +1 more source

Solar flare X-ray polarisation [PDF]

open access: yesNature, 1975
S. L. MANDEL'STAM   +2 more
openaire   +1 more source

Constraining Turbulent Solar Flare Acceleration Regions by Connecting Kinetic Modeling and X-Ray Observations

open access: yesThe Astrophysical Journal
Spatially 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
doaj   +1 more source

Relative Yield of Thermal and Nonthermal Emission during Weak Flares Observed by STIX during 2021 September 20–25

open access: yesThe Astrophysical Journal
The 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
doaj   +1 more source

Some studies on low-frequency signal in relation to X-ray flares and climatic conditions

open access: yesAnnales Geophysicae
The 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
doaj  

X-Ray/Radio Quasiperiodic Pulsations Associated with Plasmoids in Solar Flare Current Sheets

open access: yesThe Astrophysical Journal
Plasmoids (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
doaj   +1 more source

X-RAY SPIKES IN A PLASMA OF SOLAR FLARES

open access: yesProceedings of the 25th All-Russia Conference on Solar and Solar-Terrestrial Physics, 2021
Yu.E. Charikov   +3 more
openaire   +1 more source

Home - About - Disclaimer - Privacy