We present a model which explains the observed multi-linear spatial structures with different velocity gradients of the 50-61A+ methanol line at 6.7 GHz.We cons
Modern methods of spectral estimation based on parametric time-series models are useful tools in power spectral analysis. We apply the autoregressive (AR) model
In a previous paper, it was suggested that contamination of the nuclear lumiuosity by the host galaxy plays an important role in determining the parameters of t