SOLAR FACULAE AND PROPAGATING WAVES IN THE SOLAR ATMOSPHERE
Solar faculae are one of the most common manifestations of solar activity and can play a great role in energy transfer from low layers of the Sun's atmosphere to the corona. However, the mechanisms involved in the energy transfer are still poorly understood. Our paper relies on observations acquired by the AST telescope of Sayan Solar Observatory. Simultaneous observations have been performed in pairs of spectral lines: Ha 6563 A and Fei 6569 A, Bail 4554 A and Fei 4551.6 A, Call 8542 A and Fei 8538 A. The investigations have revealed that the spectral composition of ray velocity fluctuations in faculae is inhomogeneous and acted upon by structural elements of the chromospheric network. The possible presence of short and low magnetic loops in the faculae area complicates the determination of unambiguous phase relations between chromospheric and photospheric oscillations. Signals recorded at the chromospheric level exhibit both lead and delay relative to those registered at the photospheric level. At the same time apparent signs of propagating waves are detected in the chromosphere of some faculae.