Results 11 to 20 of about 151,124 (269)
Planetary and Space Science, 1998 Abstract This article presents a synthesis of the properties of Titan as they are understood at the present time and calls attention to some significant mysteries and apparent contradictions which may be resolved by work in progress and anticipated new data. Its purpose, in the year of the launch of the Cassini–Huygens mission to Saturn and Titan, is
Taylor, F, Coustenis, A
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Simulations of facular magnetic fields on cool stars
Astronomy & AstrophysicsContext. Stellar convection in the presence of magnetic field affects the emergent intensity, as well as the structure and evolution of cool main-sequence dwarfs. Aims.
Singh Bhatia Tanayveer +6 more
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High-resolution observations of small-scale activity in coronal hole plumes
Astronomy & AstrophysicsContext. Largely radial ray-like structures, termed plumes, are often observed in coronal holes. Plumes have been proposed to channel magnetohydrodynamic (MHD) waves and the solar wind into the heliosphere.
Huang Ziwen +7 more
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Earth, Planets and Space, 2020 The IGRF offers an important incentive for testing algorithms predicting the Earth’s magnetic field changes, known as secular variation (SV), in a 5-year range. Here, we present a SV candidate model for the 13th IGRF that stems from a sequential ensemble
Sabrina Sanchez +2 more
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Ca II λ854.2 nm in an enhanced network region simulated with MURaM-ChE
Astronomy & AstrophysicsContext. The Ca IIλ854.2 nm line is widely used to study the chromosphere of the Sun. In the quiet Sun, the spatially averaged line profile shows a red asymmetry and a redshift of the line center. It is known that the effect of isotopic splitting must be
Ondratschek P. A. +4 more
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Formation and dynamics of a solar eruptive flux tube
Nature Communications, 2018 Solar eruptions are large explosions occurring in the solar atmosphere. Here, the authors perform magnetohydrodynamic simulations to unveil the dynamics of a solar eruption, and find that these are dominated by nonlinear processes involving flux tube ...
Satoshi Inoue +3 more
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A simple stochastic model for dipole moment fluctuations in numerical dynamo simulations
Frontiers in Earth Science, 2016 Earth's axial dipole field changes in a complex fashion on many differenttime scales ranging from less than a year to tens of million years.Documenting, analysing, and replicating this intricate signalis a challenge for data acquisition, theoretical ...
Domenico G. eMeduri, Johannes eWicht
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Geophysical Research Letters, 2023 In an attempt to understand the findings presented in the Comment by Greaves et al. (2023, https://doi.org/10.1029/2023GL103539), we followed their data analysis methodology, omitting the hot and cold‐load calibrations that are an important part of the ...
M. A. Cordiner +15 more
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Full-disc Ca ii K observations—A window to past solar magnetism
Frontiers in Astronomy and Space Sciences, 2022 Full-disc observations of the Sun in the Ca ii K line provide one of the longest collections of solar data. First such observations were made in 1892 and since then various sites around the world have carried out regular observations, with Kodaikanal ...
Theodosios Chatzistergos +2 more
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Statistical properties of spicules in MURaM-ChE
Astronomy & AstrophysicsContext. Numerical simulations of the solar chromosphere have progressed towards reproducing spicules, which are transient features observed at the solar limb using spectral lines such as Hα, Ca II H&K, or Mg II h&k. Two types of spicules, referred to as
Chandra Sanghita +3 more
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