Numerical Computation of Two Dimensional Wind Accretion of Isothermal Gas

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dc.creatorShima, Eiji
dc.creatorMatsuda, Takuya
dc.creatorAnzer, Ulrich
dc.creatorBorner, Gerhard
dc.creatorBoffin, Henri M. J.
dc.date1998-05-28
dc.date.accessioned2026-07-07T02:27:03Z
dc.date.available2026-07-07T02:27:03Z
dc.descriptionA new numerical algorithm for calculating isothermal wind accretion flows has been developed and is applied here to the analysis of the hydrodynamics of two-dimensional plane symmetric accretion flows in wind-fed sources. Polar coordinates are used to ensure fine resolution near the object. It is found that a thin accretion column is formed which shows wave-like oscillations. Small accretion disks are formed temporarily around the object. Mass accretion rate and angular momentum accretion rate exhibit quasi-periodic oscillations. The amplitudes of the oscillations depend on the size of the inner boundary, the number of grid points and the method of calculation. For a smaller size of the inner boundary, finer grids and more accurate numerical schemes, the amplitudes of the oscillation become larger.
dc.description10 pages, submitted to Astronomy and Astrophysics; Low resolution figures included
dc.identifierhttps://arxiv.org/abs/astro-ph/9805343
dc.identifierhttp://arxiv.org/abs/astro-ph/9805343
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/12528
dc.subjectAstrophysics
dc.titleNumerical Computation of Two Dimensional Wind Accretion of Isothermal Gas
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