Inferring depth-dependent plasma motions from surface observations using the DeepVel neural network
Journal of Space Weather and Space Climate, 2021 Coverage of plasma motions is limited to the line-of-sight component at the Sun’s surface. Multiple tracking and inversion methods were developed to infer the transverse motions from observational data.
Tremblay Benoit +4 more
doaj +1 more source
A Solar Eruption with Relatively Strong Geoeffectiveness Originating from Active Region Peripheral Diffusive Polarities [PDF]
Astrophysical Journal, 2018 We report the observations of a moderate but relatively intense geoeffective solar eruption on 2015 November 4 from the peripheral diffusive polarities of active region 12443. We use space-borne Solar Dynamics Observatory and ACE observations. EUV images
Rui Wang +3 more
semanticscholar +1 more source
Frontiers in Astronomy and Space Sciences, 2023 Data-driven simulation proves to be a powerful tool in revealing the dynamic process of the solar corona, but it remains challenging to implement the driving boundary conditions in a self-consistent way and match the observables at the photosphere. Here,
Xinyi Wang +6 more
doaj +1 more source
Penumbral decay observed in active region NOAA 12585 [PDF]
, 2021 Context. The physical conditions leading the sunspot penumbra decay are poorly understood so far. Aims. We investigate the photospheric magnetic and velocity properties of a sunspot penumbra during the decay phase to advance the current knowledge of ...
S. L. Guglielmino +16 more
core +1 more source
MHD Modeling of Solar Coronal Magnetic Evolution Driven by Photospheric Flow
Frontiers in Physics, 2021 It is well-known that magnetic fields dominate the dynamics in the solar corona, and new generation of numerical modeling of the evolution of coronal magnetic fields, as featured with boundary conditions driven directly by observation data, are being ...
Chaowei Jiang +3 more
doaj +1 more source
PROBING THE SHALLOW CONVECTION ZONE: RISING MOTION OF SUBSURFACE MAGNETIC FIELDS IN THE SOLAR ACTIVE REGION [PDF]
, 2013 In this Letter, we present a seismological detection of a rising motion of magnetic flux in the shallow convection zone of the Sun, and show estimates of the emerging speed and its decelerating nature.
S. Toriumi +3 more
semanticscholar +1 more source
Observational signatures of waves and flows in the solar corona [PDF]
, 2015 DM acknowledges support of a Royal Society University Research Fellowship and a KU Leuven Research Council senior research fellowship (SF/12/008). The research leading to these results has also received funding from the European Commission Seventh ...
Antolin, Patrick +3 more
core +1 more source
PHOTOSPHERIC ELECTRIC FIELDS AND ENERGY FLUXES IN THE ERUPTIVE ACTIVE REGION NOAA 11158 [PDF]
, 2015 How much electromagnetic energy crosses the photosphere in evolving solar active regions (ARs)? With the advent of high-cadence vector magnetic field observations, addressing this fundamental question has become tractable.
M. Kazachenko +4 more
semanticscholar +1 more source
Three-Dimensional Magnetic and Velocity Structures of Active Region 12673
, 2020 We study the Solar Active Region (AR) 12673 in September 2017, which is the most flare productive AR in the solar cycle 24. Observations from Goode Solar Telescope (GST) show the strong photospheric magnetic fields (nearly 6000 G) in polarity ...
Haimin Wang
semanticscholar +1 more source
Evidence for impulsive solar wind plasma penetration through the dayside magnetopause [PDF]
Annales Geophysicae, 2003 This paper presents in situ observational evidence from the Cluster Ion Spectrometer (CIS) on Cluster of injected solar wind "plasma clouds" protruding into the day-side high-latitude magnetopause.
R. Lundin +18 more
doaj +1 more source