Results 101 to 110 of about 3,997 (213)
The Astrophysical Journal Supplement SeriesHelium-burning stars, in particular Cepheids, are especially difficult to model, as the choice of free parameters can greatly impact the shape of the blue loops—the part of the evolutionary track at which the instability strip is crossed.
O. Ziółkowska +5 more
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A Data‐Driven Model of the Geomagnetic Storm Recovery Phase
Space Weather, Volume 24, Issue 11, November 2026.Abstract The recovery phase of geomagnetic storms poses a significant challenge for accurate space weather forecasting. Traditional models based on a constant decay rate fail to capture its prolonged and variable duration, leading to uncertainties in predicting impacts on technological systems.
G. Consolini +5 more
wiley +1 more source
Annales GeophysicaeTwo aspects of solar MHD are discussed in relation to the work of the MHD simulation group at KIS. Photospheric magneto-convection, the nonlinear interaction of magnetic field and convection in a strongly stratified, radiating fluid, is a key process of ...
M. Schüssler
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The Astrophysical Journal Supplement SeriesModern tools for modeling stellar evolution, such as the Modules for Experiments in Stellar Astrophysics, offer state-of-the-art implementations of stellar theories.
O. Ziółkowska +4 more
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Chemical paradox in a binary system: Exploring metal enrichment in HD 81809B
Astronomy & AstrophysicsContext. The HD 81809 system presents a peculiar chemical composition, with a high metallicity difference between its two components; the primary has low metallicity ([Fe/H] = −0.57 dex), while the secondary has approximately solar metallicity ([Fe/H ...
Moedas Nuno, Di Mauro Maria Pia
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Topics in Core-Collapse Supernova Theory: The Formation of Black Holes and the Transport of Neutrinos [PDF]
, 2012 Core-Collapse Supernovae are one of the most complex astrophysical systems in the universe. They deeply entwine aspects of physics and astrophysics that are rarely side by side in nature.
O'Connor, Evan Patrick
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The Effect of Field Line Tracing Height on Wang‐Sheeley‐Arge Solar Wind Predictions at Earth
Space Weather, Volume 24, Issue 11, November 2026.Abstract A key component of the widely used Wang‐Sheeley‐Arge model is the tracing of magnetic field lines in the solar corona, as that largely determines the modeled open/closed field regions and in turn the predicted large‐scale solar wind structure. However, small closed field regions interspersed among the open field lines inside coronal holes (CHs)
Satabdwa Majumdar +3 more
wiley +1 more source
Grids of stellar models including second harmonic and colors: solar composition (Z=0.0172, X=0.7024)
, 2015 Grids of stellar evolution are required in many fields of astronomy/astrophysics, such as planet hosting stars, binaries, clusters, chemically peculiar stars, etc.
Yildiz M., Yildiz, Mutlu
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Space Weather, Volume 24, Issue 11, November 2026.Abstract Equatorial plasma bubbles (EPBs) are major low‐latitude ionospheric irregularities that can cause scintillation and degrade Global Navigation Satellite System (GNSS) performance. Existing amplitude‐scintillation prediction methods primarily use historical GNSS observations and ionospheric parameters, but rarely incorporate the evolving spatial
Haoyang Guo +9 more
wiley +1 more source
Stellar Imager (SI): Enhancements to the Mission Enabled by the Constellation Architecture (Ares I/Ares V) [PDF]
, 2009 Stellar Imager (SI) is a space-based, UV/Optical Interferometer (UVOI) with over 200x the resolution of HST. It will enable 0.1 milli-aresec spectral imaging of stellar surfaces and the Universe in general and open an enormous new "discovery space" for ...
Mozurkwich, D. +4 more
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