Results 1 to 10 of about 1,036,703 (213)
Towards the Identification and Classification of Solar Granulation Structures Using Semantic Segmentation [PDF]
Frontiers in Astronomy and Space Sciences, 2022 Solar granulation is the visible signature of convective cells at the solar surface. The granulation cellular pattern observed in the continuum intensity images is characterised by diverse structures e.g., bright individual granules of hot rising gas or ...
Catherine E Fischer +2 more
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Dynamic bifurcation for the granulation convection in the solar photosphere
Boundary Value Problems, 2017 The main objective of this paper is to investigate the dynamic bifurcation for the granulation convection in the solar photosphere. Based on the dynamic bifurcation theory, which is established by Ma and Wang (Phase transition dynamics, pp. 380-459, 2014)
Junyan Li
exaly +4 more sources
Analysis of Pseudo-Lyapunov Exponents of Solar Convection Using State-of-the-Art Observations
Entropy, 2021 The solar photosphere and the outer layer of the Sun’s interior are characterized by convective motions, which display a chaotic and turbulent character.
Giorgio Viavattene +6 more
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Stellar Turbulent Convection: The Multiscale Nature of the Solar Magnetic Signature
Atmosphere, 2021 The multiscale dynamics associated with turbulent convection present in physical systems governed by very high Rayleigh numbers still remains a vividly disputed topic in the community of astrophysicists, and in general, among physicists dealing with heat
Stefano Scardigli +3 more
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Frontiers in Astronomy and Space Sciences, 2023 We compare the size distributions of self-organized criticality (SOC) systems in the solar photosphere and the transition region, using magnetogram data from Helioseismic and Magnetic Imager (HMI) and Interface Region Imaging Spectrograph (IRIS) data ...
Markus J. Aschwanden +1 more
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Rayleigh-Bénard convection with magnetic field [PDF]
Theoretical and Applied Mechanics, 2003 We discuss the solution of the small perturbation equations for a horizontal fluid layer heated from below with an applied magnetic field either in vertical or in horizontal direction. The magnetic field stabilizes, due to the Lorentz force, more or less
Zierep Jürgen
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Magnetic Outbreak Associated with Exploding Granulations
The Astrophysical Journal Letters, 2022 Diagnosing the spatiotemporal pattern of magnetic flux on the Sun is vital for understanding the origin of solar magnetism and activity. Here, we report a new form of flux appearance, magnetic outbreak, using observations with an extremely high spatial ...
Chunlan Jin +5 more
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The Astrophysical Journal, 2023 In this paper, we refine a previously developed acoustic source filter, improving its reliability and extending its capabilities. We demonstrate how to fine-tune the filter to meet observational constraints and focus on specific wave-front speeds.
Shah Mohammad Bahauddin, Mark Peter Rast
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Frontiers in Astronomy and Space Sciences, 2022 We focus here on impulsive phenomena and Quiet-Sun features in the solar transition region, observed with the Interface Region Imaging Spectrograph (IRIS) at 1,400 Å (at formation temperatures of Te ≈ 104–106 K).
Markus J. Aschwanden +1 more
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Evaluation of ex vivo melanogenic response to UVB, UVA, and visible light in facial melasma and unaffected adjacent skin, [PDF]
Anais Brasileiros de Dermatologia, 2020 Background: The independent role of solar radiation in the differential melanogenesis between melasma and adjacent skin is unknown. Objectives: To assess the melanogenic responses of skin with facial melasma and of the adjacent skin to UVB, UVA, and ...
Giovana Piteri Alcantara +4 more
doaj +1 more source