Results 121 to 130 of about 711 (153)

Comparison of astrospheres around cool and hot stars

Journal of Physics: Conference Series, 2016
Simulations of astrospheres around hot and cool stars have recently move into the focus of scientific research. We describe here the differences between the astrospheres around hot and cool stars.
K Scherer, Dominik J Bomans, S E S Ferreira   +2 more
exaly   +3 more sources

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On the radii of astrospheres

Astrophysics, 2013
The characteristics of the astrospheres of convective dwarf stars, such as their radii, mass loss rates, and steady-state outflow rates, are shown by dimensional considerations to be related by simple analytic formulas to the basic parameters of the stars, their mass, radius, and rotation velocity.
A. Yeghikyan
exaly   +4 more sources

Extreme ultraviolet radiation environments and astrospheres mission (ExtREAM)

UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXIV
We present the Extreme ultraviolet Radiation Environments and Astrospheres Mission, a concept utilizing efficient, normal-incidence EUV optics that build on Lockheed Martin’s deep heritage in solar EUV instrumentation.
Jeremy J. Drake, Robert A. Woodruff, M. De Rosa, M. Jin, Adam R. Foster, C. Garraffo, B. Wargelin, Vinay L. Kashyap, K. Monsch, C. Burcklen, M. Barstow, Julián D. Alvarado Gómez, C. Argiroffi, O. Cohen   +13 more
semanticscholar   +2 more sources

Heliophysics: active stars, their astrospheres, and impacts on planetary environments

Contemporary Physics, 2018
Relative to the period between 1850 and 1900, global temperature is now 1 ± 0.2° higher.1 The world is getting warmer in other words.
B. Ishak
semanticscholar   +2 more sources

Effects of stellar eruptions throughout astrospheres

, 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.
O. Cohen, C. Schrijver, F. Bagenal, J. Sojka   +3 more
semanticscholar   +2 more sources

Modelling O-star astrospheres with different relative speeds between the ISM and the star: 2D and 3D MHD model comparison [PDF]

Astronomy and Astrophysics, 2022
Context. State of the art simulations of astrospheres are modelled using three-dimensional (3D) magnetohydrodynamics (MHD). An astrospheric interaction of a stellar wind (SW) with its surrounding interstellar medium (ISM) can only generate a bow shock if
L R Baalmann, K Scherer, J Kleimann
exaly   +2 more sources

On the numerical modeling of astrospheres, including those of Luminous Blue Variable stars, and the modulation of cosmic rays within

Monthly notices of the Royal Astronomical Society, 2022
Luminous blue variable type stars are massive O-type stars which show variable outflow parameters. These stars can also undergo eruptions where a large amount of mass is ejected in a very short duration.
J. Light, S. Ferreira, N. E. Engelbrecht, K. Scherer, K. Herbst   +4 more
semanticscholar   +1 more source

On the 3D transport of galactic cosmic rays in a selection of exoplanet-hosting astrospheres: the influence of stellar rotation

Monthly Notices of the Royal Astronomical Society
Galactic cosmic rays (GCRs) may influence the habitability of exoplanets. The recently proposed relationship between GCR intensities at exoplanetary locations and the rotation periods of their host stars is here investigated for several M-dwarf ...
Juandre Light, N E Engelbrecht, Konstantin Herbst   +2 more
exaly   +2 more sources

Ultraviolet investigations of the interstellar medium from astrospheres to the local cavity

Ultraviolet Astronomy and the Quest for the Origin of Life, 2021
Ultraviolet spectroscopy plays a critical role in our understanding of the interstellar medium. This chapter describes how the analysis of resonance lines of abundant neutrals and ions leads to physical and morphological models of interstellar gas ...
J. Linsky
semanticscholar   +1 more source

Astrospheres, stellar winds, and the interstellar medium

, 2016
B. Wood, J. Linsky
semanticscholar   +2 more sources