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Bow shocks, bow waves, and dust waves. I. Strong coupling limit

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arxiv 1903.03737 v2 pith:43E3X57T submitted 2019-03-09 astro-ph.SR astro-ph.GA

Bow shocks, bow waves, and dust waves. I. Strong coupling limit

classification astro-ph.SR astro-ph.GA
keywords wavesshocksstarsaroundbowsdustopticallyradiation-supported
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Dust waves and bow waves result from the action of a star's radiation pressure on a stream of dusty plasma that flows past it. They are an alternative mechanism to hydrodynamic bow shocks for explaining the curved arcs of infrared emission seen around some stars. When gas and grains are perfectly coupled, for a broad class of stellar parameters, wind-supported bow shocks predominate when the ambient density is below 100 per cubic cm. At higher densities radiation-supported bows can form, tending to be optically thin bow waves around B stars, or optically thick bow shocks around early O stars. For OB stars with particularly weak stellar winds, radiation-supported bows become more prevalent.

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Cited by 1 Pith paper

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  1. An Halpha survey of infrared bow-shocks around OB-type stars

    astro-ph.SR 2026-07 conditional novelty 6.5

    Fifteen plus one serendipitous clear H-alpha bow shocks are detected among 78 IR candidates; several are consistent with radiation-supported regimes while others match classical wind-supported shocks.