We analyze a prominence-like cool plasma structure as observed by Atmospheric Imaging Assembly ( AIA ) onboard the Solar Dynamics Observatory ( SDO ) .
We perform the Differential Emission Measure ( DEM ) analysis using various filters of AIA , and also deduce the temperature and density structure in and around the observed flux-tube .
In addition to deducing plasma parameters , we also find an evidence of multiple harmonics of fast magnetoacoustic kink waves in the observed prominence-like magnetic structure .
Making use of estimated plasma parameters and observed wave parameters , under the baseline of MHD seismology , we deduce magnetic field in the flux-tube .
The wave period ratio P1/P2 = 2.18 is also observed in the flux-tube , which carries the signature of magnetic field divergence where we estimate the tube expansion factor as 1.27 .
We discuss constraints in the estimation of plasma and magnetic field properties in such a structure in the current observational perspective , which may shed new light on the localized plasma dynamics and heating scenario in the solar atmosphere .