Results 21 to 30 of about 1,308,589 (302)

Simulations of facular magnetic fields on cool stars

open access: yesAstronomy & Astrophysics
Context. 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
doaj   +1 more source

Li-Ion Battery State of Health Estimation Based on Short Random Charging Segment and Improved Long Short-Term Memory

open access: yesIET Signal Processing, 2023
Lithium-ion batteries have been used in a wide range of applications, including electrochemical energy storage and electrical transportation. In order to ensure safe and stable battery operation, the State of Health (SOH) needs to be accurately estimated.
Aina Tian   +7 more
doaj   +1 more source

The galactic environment of the Sun [PDF]

open access: yes, 1999
The interstellar cloud surrounding the solar system regulates the galactic environment of the Sun and constrains the physical characteristics of the interplanetary medium.
Frisch, P. C.
core   +3 more sources

High-resolution observations of small-scale activity in coronal hole plumes

open access: yesAstronomy & Astrophysics
Context. 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
doaj   +1 more source

Ca II λ854.2 nm in an enhanced network region simulated with MURaM-ChE

open access: yesAstronomy & Astrophysics
Context. 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
doaj   +1 more source

The formation of the solar system

open access: yes, 2015
The solar system started to form about 4.56 Gyr ago and despite the long intervening time span, there still exist several clues about its formation. The three major sources for this information are meteorites, the present solar system structure and the ...
Davies, M. B.   +9 more
core   +3 more sources

Statistical properties of spicules in MURaM-ChE

open access: yesAstronomy & Astrophysics
Context. 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
doaj   +1 more source

Two-Layer Ring Truss-Based Space Solar Power Station

open access: yesEnergies, 2022
A space solar power station (SSPS) has become a huge potential candidate to provide abundant and clean electrical energy for terrestrial users by collecting and converting solar power in space. In this paper, an innovative two-layer ring truss-based SSPS
Guanheng Fan   +3 more
doaj   +1 more source

A single frequency approach to nonequilibrium modeling of the chromosphere

open access: yesAstronomy & Astrophysics
Context. The solar chromosphere is a region where radiation plays a critical role in energy transfer and interacts strongly with the plasma. In this layer, strong spectral lines, such as the Lyman lines, contribute significantly to radiative energy ...
Ruan W.   +3 more
doaj   +1 more source

Methodologies for Analyzing Soluble Organic Compounds in Extraterrestrial Samples: Amino Acids, Amines, Monocarboxylic Acids, Aldehydes, and Ketones

open access: yesLife, 2019
Soluble organic compositions of extraterrestrial samples offer valuable insights into the prebiotic organic chemistry of the solar system. This review provides a summary of the techniques commonly used for analyzing amino acids, amines, monocarboxylic ...
Danielle N. Simkus   +5 more
doaj   +1 more source

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