Results 121 to 130 of about 195 (134)

The heliospheric hydrogen wall and astrospheres

Advances in Space Research, 2004
Abstract 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, H.-R Müller, G.P Zank, V.V Izmodenov, J.L Linsky   +4 more
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Modeling stellar wind interaction with the ISM: Exploring astrospheres and their Lyman-α absorption [PDF]

COSPAR Colloquia Series, 2001
G P Zank
exaly   +2 more sources

Habitable Zones Exposed: Astrosphere Collapse Frequency as a Function of Stellar Mass

Astrobiology, 2009
Stellar 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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On the validity of ideal MHD in the vicinity of stagnation points in the heliosphere and other astrospheres [PDF]

Astrophysics and Space Sciences Transactions, 2008
International audienceThe paradigm of ideal MHD is investigated in the vicinity of null points of flows and magnetic fields. These null points determine the location and geometrical shape of the heliopause (or other astropauses).
Marian Karlický, D H Nickeler
exaly   +1 more source

Lyman-α Absorption from the Heliospheric Interface and Astrospheres

AIP Conference Proceedings, 2004
The 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.
openaire   +1 more source

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.
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Comparison of astrospheres around cool and hot stars

2017
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. While those around the former are huge (on pc scales) because of their high stellar wind momentum flow, those around cool stars are on a AU scale and the ...
Scherer, K., Ferreira, S.E.S., Strauss, R.D., Bomans, D.J., Fichtner, H.   +4 more
openaire   +1 more source

astrosphere, n.

2023
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On the numerical modelling of astrospheres, including those of luminous blue variable stars, and the modulation of cosmic rays within

Monthly Notices of the Royal Astronomical Society, 2022
Konstantin Herbst, Klaus Scherer, Juandre Light   +2 more
exaly  

3D MHD astrospheres: applications to IRC-10414 and Betelgeuse

Monthly Notices of the Royal Astronomical Society, 2021
Dominique M -A Meyer, Panos Boumis, Andrea Mignone   +2 more
exaly