Results 11 to 20 of about 195 (134)
Dust in and Around the Heliosphere and Astrospheres. [PDF]
Space Sci Rev, 2022 AbstractInterstellar dust particles were discovered in situ, in the solar system, with theUlyssesmission’s dust detector in 1992. Ever since, more interstellar dust particles have been measured inside the solar system by various missions, providing insight into not only the composition of such far-away visitors, but also in their dynamics and ...
Sterken VJ +9 more
europepmc +6 more sources
Monthly Notices of the Royal Astronomical Society, 2021 A significative fraction of all massive stars in the MilkyWay move supersonically through their local interstellar medium (ISM), producing bow shock nebulae by wind-ISM interaction. The stability of these observed astrospheres around cool massive stars challenges precedent 2D (magneto-)hydrodynamical (MHD) simulations of their surroundings.
Meyer, Dominique M.-A. (Dr. rer. nat.) +5 more
core +6 more sources
Examining simulated MHD shock structures of astrospheres [PDF]
, 2022 In dieser Arbeit werden verschiedene Untersuchungen an magnetohydrodynamischen Modellen von Astrosphären (ASn) präsentiert. Die Schockstrukturen der ASn um vier Sterne, den schnell-laufenden O-Stern \(\lambda\) Cephei, die Sonne, unseren nächsten Nachbarn Proxima Centauri, und den M-Stern LHS 1140, wurden untersucht. Eine Methode zur Projektion von ASn,
Baalmann, Lennart Robin (M. Sc.)
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Skymaps of observables of three-dimensional magnetohydrodynamic astrosphere models [PDF]
Astronomy & Astrophysics, 2020 Context. Three-dimensional models of astrospheres have recently become of interest. However, comparisons between these models and observations are non-trivial because of the two-dimensional nature of observations. Aims. By projecting selected physical values of three-dimensional models of astrospheres onto the surface of a sphere that is centred on a ...
L. R. Baalmann +5 more
core +5 more sources
Numerical modelling of Astrospheres [PDF]
, 2020 MSc (Astrophysical Sciences), North-West University,Potchefstroom ...
Light, J.
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Exploration of the heliosphere and astrospheres with HST [PDF]
AIP Conference Proceedings, 2012 We present some recent results concerning the analysis of Hubble Space Telescope observations of Lyman-α absorption from the heliosphere and astrospheres. We present heliospheric absorption predictions from the first extended-tail 3-D MHD model of the global heliosphere, with kinetic neutrals.
Brian E. Wood +2 more
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Effects of stellar eruptions throughout astrospheres [PDF]
, 2016 Stars like the Sun evolve from young, fast-rotating and very active stars to older, slowly rotating main-sequence stars like our own Sun. The changes in stellar magnetic fields and stellar activity of such solar analogs with stellar evolution and the change in their rotation period are described in Ch. 2 of Vol. III.
Ofer Cohen
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HUBBLE SPACE TELESCOPE CONSTRAINTS ON THE WINDS AND ASTROSPHERES OF RED GIANT STARS* [PDF]
The Astrophysical Journal, 2016 ABSTRACT We report on an ultraviolet spectroscopic survey of red giants observed by the Hubble Space Telescope, focusing on spectra of the Mg ii h and k lines near 2800 Å in order to study stellar chromospheric emission, winds, and astrospheric absorption.
Brian E. Wood +2 more
openaire +5 more sources
The numerical simulation of astrospheric evolution in different interstellar environments [PDF]
, 2023 The interaction between the interstellar medium (ISM) and a stellar wind leads to the formation of an astrosphere. In this study, the evolution of astrospheres is simulated with a two-dimensional spherical hydrodynamic (HD) and magnetohydrodynamic (MHD) model, and a three-dimensional cartesian MHD model.
Marais, Andrea
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Particle Transport from First Principles in the Early Heliosphere: κ1 Ceti as a Case Study for the Young Sun [PDF]
The Astrophysical JournalSeveral studies of Galactic cosmic-ray (GCR) modulation within the astrospheres of stars deemed to be proxies for the young Sun have concluded that the intensities of these particles would, at early stages of the Sun’s evolution, be negligible at 1 au ...
N. Eugene Engelbrecht +4 more
doaj +2 more sources