Features of spatial distribution of oscillations in faculae regions

Details Features of spatial distribution of oscillations in faculae regions Features of spatial distribution of oscillations in faculae regions

2011-10-07

arxiv.org/abs/1110.1444v1

Solar Physics 2011, Volume 268, Number 2, Pages 329-334

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

6 pages, 4 figures

Scientific paper

10.1007/s11207-010-9581-9

We found that oscillations of LOS velocity in H-alpha are different for various parts of faculae regions. Power spectra show that the contribution of low-frequency modes (1.2 - 2 mHz) increase at the network boundaries. Three and five- minute periods dominate inside cells. The spectra of photosphere and chromosphere LOS velocity oscillations differ for most faculae. On the other hand, we detected several cases where propagating oscillations in faculae were manifest with a five-minute period. Their initiation point on spatial-temporal diagrams coincided with the local maximum of the longitudinal magnetic field.

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