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Bow shock sources close to the Galactic centre

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arxiv 1903.00466 v1 pith:IQA3ASHV submitted 2019-03-01 astro-ph.GA

classification astro-ph.GA
keywords bow-shockambientcentreclosegalacticinformationmotionsources
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We provide an up-to-date summary of the current observational and theoretical studies of stellar bow-shock sources close to the Galactic centre. The symmetry axis of a bow shock provides the information on the relative motion of the star with respect to the ambient medium, while the photometry and spectroscopy in NIR domain give information about the 3D motion of the star. Hence, it is possible from this data to obtain an estimate on the motion of the ambient medium. In combination with the estimate of the bow-shock size, it is possible to infer the valuable information on the density of the hot accretion flow close to the Galactic centre. In particular, we outline a statistical method to determine the ambient density slope based on either multiple bow-shock detections for one star along its orbit or multiple bow-shock detections for several sources at different distances from Sgr A*.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Why do massive stars form bow shocks? Bulk ISM motion as the main driver of bow shock formation and geometry

    astro-ph.SR 2026-08 conditional novelty 6.0 of 10

    Bulk interstellar gas motion, not stellar motion, dominates most massive star bow shocks; only about 21% are classical aligned bow shocks.

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