Search For Atmospheric G-mode Oscillations from TRACE Observations

Details Search For Atmospheric G-mode Oscillations from TRACE Observations Search For Atmospheric G-mode Oscillations from TRACE Observations

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd...3e...1k&link_type=abstract

Solar Active Regions and 3D Magnetic Structure, 26th meeting of the IAU, Joint Discussion 3, 16-17 August, 2006, Prague, Czech R

Physics

Scientific paper

An identification and clarification of different modes of oscillations may eventually illuminate the solar neutrino problem. The internal g-modes of the Sun are the most powerful tool for investigation of solar core and the neutrino problem. The detection of atmospheric g-mode oscillations are also equally important in order to know the role of different kinds of oscillations in the heating of the chromosphere and corona. We have analysed a 6-hours of time sequence of ultraviolet images obtained on May 24, 2003 in 1600 Å continuum under high spatial and temporal resolution with TRACE Space Mission. We have chosen 15 uv bright points, 15 uv network elements and 15 uv background regions from the time sequence images for the detailed analysis. We derived the cumulative intensity values of all these features using SolarSoftware (SSW) in IDL. The light curves of all the features have been generated for the total duration of observations. We have done the power spectrum analysis using their time series data. We find that the uv bright points, the uv network and uv background regions will exhibit longer period of intensity oscillations namely, 5.5 hours, 4.6 hours and 3.4 hours respectively, in addition to small scale intensity fluctuations. We suggest that these periods may be related to a very high order atmospheric g-modes showing a large periods at the transition region.

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