Results 61 to 70 of about 711 (153)

Astro2020 Science White Paper: Synoptic Studies of the Sun as a Key to Understanding Stellar Astrospheres

open access: yes, 2019
Ground-based solar observations provide key contextual data (i.e., the 'big picture') to produce a complete description of the only astrosphere we can study in situ: our Sun's heliosphere.
Bain, Hazel M.   +13 more
core  

Near-Earth Supernova Explosions: Evidence, Implications, and Opportunities [PDF]

open access: yes, 2019
There is now solid experimental evidence of at least one supernova explosion within 100 pc of Earth within the last few million years, from measurements of the short-lived isotope ⁶⁰Fe in widespread deep-ocean samples, as well as in the lunar regolith ...
Fields, Brian D., Mewaldt, Richard A.
core  

The interaction of multiple stellar winds in stellar clusters: potential flow

open access: yes, 2018
While several studies have investigated large-scale cluster winds resulting from an intra-cluster interaction of multiple stellar winds, as yet they have not provided details of the bordering flows inside a given cluster.
Fichtner, Horst   +4 more
core   +1 more source

The Sun in Time: Age, Rotation, and Magnetic Activity of the Sun and Solar-type Stars and Effects on Hosted Planets

open access: yes, 2009
Multi-wavelength studies of solar analogs (G0-5 V stars) with ages from ~50 Myr to 9 Gyr have been carried out as part of the "Sun in Time" program for nearly 20 yrs.
Edward F. Guinan   +5 more
core   +1 more source

A Hitch-hiker's Guide to Stochastic Differential Equations: Solution Methods for Energetic Particle Transport in Space Physics and Astrophysics

open access: yes, 2017
In this review, an overview of the recent history of stochastic differential equations (SDEs) in application to particle transport problems in space physics and astrophysics is given. The aim is to present a helpful working guide to the literature and at
Effenberger, Frederic   +1 more
core   +1 more source

Theory of interstellar medium diagnostics [PDF]

open access: yes, 1983
The theoretical interpretation of observed interplanetary resonance luminescence patterns is used as one of the must promising methods to determine the state of the local interstellar medium (LISM).
Fahr, H. J.
core   +1 more source

Is the Sun Embedded in a Typical Interstellar Cloud?

open access: yes, 2008
The physical properties and kinematics of the partially ionized interstellar material near the Sun are typical of warm diffuse clouds in the solar vicinity.
A. Czechowski   +57 more
core   +1 more source

Stationary field-aligned MHD flows at astropauses and in astrotails. Principles of a counterflow configuration between a stellar wind and its interstellar medium wind

open access: yes, 2006
A stellar wind passing through the reverse shock is deflected into the astrospheric tail and leaves the stellar system either as a sub-Alfvenic or as a super-Alfvenic tail flow. An example is our own heliosphere and its heliotail.
Baranov   +31 more
core   +1 more source

Hydrogen wall and heliosheath Lyman-alpha absorption toward nearby stars: possible constraints on the heliospheric interface plasma flow

open access: yes, 2002
In this paper, we study heliospheric Ly-$\alpha$ absorption toward nearby stars in different lines of sight. We use the Baranov-Malama model of the solar wind interaction with a two-component (charged component and H atoms) interstellar medium ...
Baranov   +43 more
core   +1 more source

Stellar Coronal and Wind Models: Impact on Exoplanets

open access: yes, 2017
Surface magnetism is believed to be the main driver of coronal heating and stellar wind acceleration. Coronae are believed to be formed by plasma confined in closed magnetic coronal loops of the stars, with winds mainly originating in open magnetic field
A Maggio   +162 more
core   +1 more source

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