title: Realizability of stationary spherically symmetric transonic accretion.
abstract: The spherically symmetric stationary transonic (Bondi) flow is considered a classic example of an accretion flow. This flow, however, is along a separatrix, which is usually not physically realizable. We demonstrate, using a pedagogical example, that it is the dynamics which selects the transonic flow.
authors.affiliation: Department of Theoretical Physics, Indian Association for the Cultivation of Science, Jadavpur, Calcutta (Kolkata) 700 032, India.
authors.forename: Arnab K
authors.initials: AK
authors.lastname: Ray
authors.forename: J K
authors.initials: JK
authors.lastname: Bhattacharjee