Results 1 to 10 of about 39,482 (251)

The role and contribution of magnetic fields, characterized via their magnetic flux, to the statistical structuring of the solar atmosphere [PDF]

Scientific Reports, 2022
The anomalous heating of the solar upper atmosphere is one of the eight key problems in modern astronomy. Moreover, the stratification of the solar atmosphere is an outstanding key-problem in solar physics.
K. J. Li, J. C. Xu, W. Feng
doaj   +2 more sources

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, Cossette Jean-François, Kazachenko Maria D., Charbonneau Paul, Vincent Alain   +4 more
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Inferring Plasma Flows at Granular and Supergranular Scales With a New Architecture for the DeepVel Neural Network

Frontiers in Astronomy and Space Sciences, 2020
The wealth of observational data available has been instrumental in investigating physical features relevant to solar granulation, supergranulation and Active Regions.
Benoit Tremblay, Benoit Tremblay, Raphaël Attie, Raphaël Attie   +3 more
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Testing the Steady-State Fluctuation Relation in the Solar Photospheric Convection

Entropy, 2020
The turbulent thermal convection on the Sun is an example of an irreversible non-equilibrium phenomenon in a quasi-steady state characterized by a continuous entropy production rate.
Giorgio Viavattene, Giuseppe Consolini, Luca Giovannelli, Francesco Berrilli, Dario Del Moro, Fabio Giannattasio, Valentina Penza, Daniele Calchetti   +7 more
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Data reduction pipeline for MOF-based synoptic telescopes

Journal of Space Weather and Space Climate, 2020
There are strong scientific cases and practical reasons for building ground-based solar synoptic telescopes. Some issues, like the study of solar dynamics and the forecasting of solar flares, benefit from the 3D reconstruction of the Sun’s atmosphere and
Forte Roberta, Berrilli Francesco, Calchetti Daniele, Del Moro Dario, Fleck Bernhard, Giebink Cynthia, Giebink William, Giovannelli Luca, Jefferies Stuart Mark, Knox Allister, Magrì Maria, Murphy Neil, Nitta Garry, Oliviero Maurizio, Pietropaolo Ermanno, Rodgers Wayne, Scardigli Stefano, Viavattene Giorgio   +17 more
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SPATIAL AND TEMPORAL VARIATIONS OF K Ca II LINE PROFILE SHAPES IN DIFFERENT STRUCTURES OF THE SOLAR CHROMOSPHERE. II. DETERMINATION TECHNIQUE AND CORRELATION RELATIONSHIPS BETWEEN THE K CA II LINE PARAMETERS FOR K₁ AND K₂ FEATURES

Solar-Terrestrial Physics, 2020
We have studied two regions located at the base of a coronal hole. For the K₁ intensity minima and K₂ peaks, which form between the upper photosphere and the lower chromosphere and in the lower chromosphere respectively, a number of Ca II line parameters
I.P. Turova, S.A. Grigoryeva, O.A. Ozhogina   +2 more
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On the Origin of the Photospheric Magnetic Field

The Astrophysical Journal, 2022
This article presents results that challenge the paradigms that (1) the convection zone is the source of the radial magnetic field in the photosphere and (2) that coronal currents are neutralized from the perspective of the photosphere.
Peter W. Schuck, Mark G. Linton, Kalman J. Knizhnik, James E. Leake   +3 more
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Cheap, accessible, and virtual experiences as tools for immersive study: a proof of concept study

Research in Learning Technology, 2020
Virtual and augmented reality technology is becoming more commonly available within a plethora of environments in which we exist, including educational environments.
Steven L. Rogers
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Photospheric magnetic vortex structures [PDF]

Annales Geophysicae, 2011
Using direct numerical magneto-hydrodynamic (MHD) simulations, we demonstrate the evidence of two physically different types of vortex motions in the solar photosphere.
S. Shelyag, V. Fedun, F. P. Keenan, R. Erdélyi, M. Mathioudakis   +4 more
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Signatures of Magnetic Flux Ropes in the Low Solar Atmosphere Observed in High Resolution

Frontiers in Astronomy and Space Sciences, 2019
Magnetic flux ropes (MFRs) are important physical features closely related to solar eruptive activities with potential space weather consequences. Studying MFRs in the low solar atmosphere can shed light on their origin and subsequent magnetic structural
Haimin Wang, Haimin Wang, Chang Liu, Chang Liu   +3 more
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