Abstract


  STUDY OF THE DYNAMICS OF THE CORONA USING JULY 11, 2010 ECLIPSE DATA RECORDED FROM EASTER ISLAND

  T. Samanta, Indian Institute of Astrophysics, tsamanta@iiap.res.in
  S. G., Indian Institute of Astrophysics,
  J. Singh, Indian Institute of Astrophysics,
  D. Banerjee, Indian Institute of Astrophysics,

For better understanding of the coronal wave heating theory a high
temporal resolution, multi-slit spectroscopic observations of the solar corona were performed in the green line at 5303 ̊A [Fe XIV] and the red line at 6374 ̊A [Fe X] during the total solar eclipse of 11 July 2010 from Easter Island, Chile. The data is analyzed to study the periodic variations in the intensity, line width and doppler velocity using wavelet analysis at all the locations along the slit position. We have found that each parameter
shows significant oscillations with period ranging from 6-25 sec at differ-
ent locations. These oscillations are interpreted in terms of the presence
of MHD waves in the corona. We explore the nature of these oscillations
to determine the types of waves that could cause these oscillations and
we characterizes the waves while looking at different line parameters and
their correlation etc. We also observe damping of these oscillations which
provide further clues to the basic properties of these waves.