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Observing stellar bow shocks

2010/05/10 by Amelia Carolina Sparavigna, A. C. Sparavigna, Sparavigna, A. C. +3
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Star Formation Studies #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Space Physics (physics.space-ph) #Stellar, planetary, and galactic studies #astro-ph.GA #physics.space-ph

paper · pdf · doi:10.48550/arxiv.1005.1527

Keywords: Shock Waves, Astronomy, Image Processing

arxiv created 2010/05/10 · openalex publication_date 2010/05/10 · arxiv updated 2010/05/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

For stars, the bow shock is typically the boundary between their stellar wind and the interstellar medium. Named for the wave made by a ship as it moves through water, the bow shock wave can be created in the space when two streams of gas collide. The space is actually filled with the interstellar medium consisting of tenuous gas and dust. Stars are emitting a flow called stellar wind. Stellar wind eventually bumps into the interstellar medium, creating an interface where the physical conditions such as density and pressure change dramatically, possibly giving rise to a shock wave. Here we discuss some literature on stellar bow shocks and show observations of some of them, enhanced by image processing techniques, in particular by the recently proposed AstroFracTool software.

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