On a possible mechanism of solar faculae heating

A new mechanism of solar faculae heating is suggested. Interaction of the convective motion with the magnetic field results in decrease of its scale down to values providing for an ohmic dissipation and leading to heating at the photospheric level. Photospheric magnetic fields, faculae and granulation are considered as a combined problem. The heating mechanism causes the observed correlation of faculae brightness with the velocity field. Some points of observation are proposed for examining the action of the suggested mechanism. The effective decreasing of the magnetic field scale may be responsible for the origin of the fine structure. The model does not contradict generally accepted ideas on the active region development.