With the HOP 045 observations, the EIS slot data indicate the presence of propagating Alfven or fast magneto-acoustic waves with the periodicity of about 15-20 min in the inter-plume region which was seen upto 1.2 solar radii. Whereas in the plume region, slow magneto-acoustic waves were seen upto 1.1 solar radii with the same range of periodicity. These results have been reported in Banerjee et al. (2009) and Gupta et al. (2010). These studeis were done using the EIS SLOT and SUMER slit.
To confirm these observations further, we would like run observations with EIS 2'' slit on plume and interplume region together with AIA. The proposed study duration is of about 7 hours, to be run one or two times. |
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