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Signature of slow acoustic oscillations in a non-flaring loop observed by EIS/Hinode

Srivastava, A. K.; Dwivedi, B. N.

We study intensity oscillations near the apex of a coronal loop to find the signature of MHD oscillations. We analyse the time series of the strongest Fe XII 195.12 Å image data, observed by 40″ SLOT of the EUV Imaging Spectrometer (EIS) onboard the Hinode spacecraft. Using a standard wavelet tool, we produce power spectra of intensity oscillation…

Evidence of wave harmonics in a brightened magnetic network observed from Hinode/EIS

Srivastava, A. K.

We study intensity oscillations in the upper chromosphere to search acoustic wave harmonics in a low-atmospheric solar cavity associated with a brightened magnetic network near the south pole of the Sun. We use a wavelet tool to produce power spectrum of He II 256.32 Å intensity oscillation as observed by EUV Imaging Spectrometer (EIS) onboard Hin…