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X-ray detection of astrospheres around three main-sequence stars and their mass-loss rates
Nature AstronomyStellar winds of cool main-sequence stars are difficult to constrain observationally. One way to measure stellar mass-loss rates is to detect the soft X-ray emission from stellar astrospheres produced by charge exchange between heavy ions of the stellar ...
K G Kislyakova, M Gudel, D Koutroumpa
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The heliospheric hydrogen wall and astrospheres
Advances in Space Research, 2004Abstract Charge exchange processes in the outer heliosphere produce a population of hot hydrogen gas within the heliosphere, creating a “hydrogen wall” between the heliopause and bow shock. The heliospheric hydrogen wall scatters Lyα photons passing through it, producing a detectable absorption signature in observations of H I Lyα emission from ...
B.E Wood +4 more
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Relativistic Astrospheres of Pulsars and Gamma-Ray Binaries: Modeling of Non-thermal Processes
Fluid DynamicsRelativistic winds of the rotation powered pulsars in binary systems colliding with powerful winds of massive stars are producing astrospheres which are observed as bright gamma-ray sources above TeV photon energies.
A. Bykov, A. E. Petrov, K. Levenfish
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Exploration of the heliosphere and astrospheres with HST
AIP Conference Proceedings, 2012We 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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Astrospheres of planet-hosting cool stars and their impact on exoplanetary habitability
Proceedings of the International Astronomical UnionThe impact of stellar energetic particles (StEPs) and galactic cosmic rays (GCRs) on exoplanetary atmospheres, and with that on transmission spectra and biosignatures like methane and ozone, recently became one of the foci of exoplanetary habitability ...
K. Herbst +8 more
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Understanding the Heliospheric Shield: Laying the Groundwork to Predict Habitable Astrospheres
Annual Review of Astronomy and AstrophysicsThis article reviews today's open issues, frontiers of research, and advances in our understanding of the heliosphere throughout the Sun's last 10 million years.
M. Opher
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, 2019
Interstellar dust penetrates into the heliosphere/astrosphere due to relative motion of the Sun and the local interstellar medium (LISM). Inside the heliosphere/astrosphere and at the heliospheric boundaries, where the solar/stellar wind interacts with
A. Mishchenko, E. Godenko, V. Izmodenov
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Interstellar dust penetrates into the heliosphere/astrosphere due to relative motion of the Sun and the local interstellar medium (LISM). Inside the heliosphere/astrosphere and at the heliospheric boundaries, where the solar/stellar wind interacts with
A. Mishchenko, E. Godenko, V. Izmodenov
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Habitable Zones Exposed: Astrosphere Collapse Frequency as a Function of Stellar Mass
Astrobiology, 2009Stellar astrospheres--the plasma cocoons carved out of the interstellar medium by stellar winds--are one of several buffers that partially screen planetary atmospheres and surfaces from high-energy radiation. Screening by astrospheres is continually influenced by the passage of stars through the fluctuating density field of the interstellar medium (ISM)
David S, Smith, John M, Scalo
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Lyman-α Absorption from the Heliospheric Interface and Astrospheres
AIP Conference Proceedings, 2004The collision between the solar wind and the interstellar medium populates the heliosphere with hot hydrogen gas, especially in between the heliopause and bow shock. This hydrogen can produce detectable H I Lyman‐α absorption in Hubble Space Telescope (HST) observations of nearby stars.
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Numerical modelling of Astrospheres
2020MSc (Astrophysical Sciences), North-West University,Potchefstroom ...
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