The current passage rate of Oort cloud comets does it represent a quiescent stage or an excited one

A steady-state supply of Oort cloud comets, as due to the dominant action of tides of the galactic disk, will produce a pattern of aphelion points on the celestial sphere concentrated at mid-galactic latitudes. As shown before (cf. eq. (6.2)), the change in the perihelion distance of Oort cloud comets by the tidal force of the galactic disk is proportional to sin 20, i.e. it is maximum for a galactic latitude 0 = 45°. By contrast, comet showers will not show such a galactic dependence, but the concentration of aphelion points will be related instead to the path of the passing star or GMC.

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