Accretion by the Galaxy - Effects of radiative cooling on the flow structure and infall rate

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Cooling Flows (Astrophysics), Flow Distribution, Flow Velocity, Galactic Structure, Mass Transfer, Milky Way Galaxy, Radiative Heat Transfer, Abundance, Adiabatic Flow, Cooling, Flow Equations, Mach Number, Mass Distribution, Temperature Effects, X Rays

Scientific paper

The extreme effects of radiative cooling on the structure of an inflow of material into the Galaxy are explored. Significantly, it is found that cooling cannot prevent the formation of a very hot (about 2 million K) corona in the flow close to the Galaxy. When it is important, however, cooling in the flow considerably increases the infall rate over the adiabatic maximum value for the same set of boundary conditions. Limits set on the flow rate and coronal gas parameters by observations of the Galaxy are discussed.

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