Observation of a reversal of rotation in a sunspot during a solar flare [PDF]
Nature Communications, 2016 Back reaction of coronal magnetic fields on the solar surface may help to understand the coronal reconfiguration during a solar flare. Here the authors report observation of reversal of the rotation of a sunspot during a X1.6 flare with data from HMI.
Yi Bi +6 more
doaj +2 more sources
Initial Observations of Sunspot Oscillations Excited by Solar Flare [PDF]
, 2007 Observations of a large solar flare of December 13, 2006, using Solar Optical Telescope (SOT) on Hinode spacecraft revealed high-frequency oscillations excited by the flare in the sunspot chromosphere.
A. G. Kosovichev, T. Sekii, Yoon T.-S.
core +2 more sources
Omori’s Law in the Occurrence of Solar Flare : Approach of Hybrid Model [PDF]
Iranian Journal of Astronomy and Astrophysics, 2020 Solar flares are large-scale phenomena that have a significant effect on theEarth’s climate. Using the solar flare time series from January 1, 2006 to July 21, 2016,we develop a complex network for predicting solar flares.
Amin Najafi
doaj +1 more source
Statistical analysis for EUV dynamic spectra and their impact on the ionosphere during solar flares
Earth, Planets and Space, 2023 The X-rays and extreme ultraviolet (EUV) emitted during solar flares can rapidly change the physical composition of Earth’s ionosphere, causing space weather phenomena.
Shohei Nishimoto +9 more
doaj +1 more source
Comparison of VLF Signal Responses to Solar Flares along Daytime and Nighttime Propagation Paths
Remote Sensing, 2023 Solar flares have a severe impact on the near-earth space environment, during which the VLF signals observed by the ground-based instrument exhibit abnormal changes.
Xudong Gu +9 more
doaj +1 more source
Corporate social responsibility: A review of empirical research using Thomson Reuters Asset4 data
Accounting &Finance, Volume 62, Issue 4, Page 4523-4568, December 2022., 2022 Abstract Thomson Reuters Asset4 (Asset4) is a leading corporate social responsibility (CSR) database often used by practitioners and researchers. This review offers a precise understanding of prior studies using Asset4 and their justification for selecting Asset4, and identifies research opportunities.
Charl de Villiers +2 more
wiley +1 more source
INCREASES IN SCR ENERGETIC PROTON FLUXES ON EARTH AND THEIR RELATION TO SOLAR SOURCES
Solar-Terrestrial Physics, 2020 Logachev catalog data for solar cycle 23 has been used to study the dependence of measured increases in solar cosmic rays (SCRs) on solar perturbations. The efficiency of recording the SCR increases, driven by proton acceleration in the corona, on Earth ...
L.L. Lazutin
doaj +1 more source
Are There Radio-quiet Solar Flares? [PDF]
Solar Physics, 2007 ISSN:0038 ...
Benz, Arnold +2 more
openaire +8 more sources
Detection of Solar Neutrons and Solar Neutron Decay Protons
Universe, 2023 Solar flares are broadly classified as impulsive or gradual. Ions accelerated in a gradual flare are thought to be accelerated through a shock acceleration mechanism, but the particle acceleration process in an impulsive flare is still largely unexplored.
Yasushi Muraki +14 more
doaj +1 more source
Change ratios of magnetic helicity and magnetic free energy during major solar flares [PDF]
, 2023 Magnetic helicity is an important concept in solar physics, with a number of theoretical statements pointing out the important role of magnetic helicity in solar flares and coronal mass ejections (CMEs). Here we construct a sample of 47 solar flares, which contains 18 no-CME-associated confined flares and 29 CME-associated eruptive flares. We calculate
arxiv +1 more source