SSP seminar

Intensity Oscillations & Heating of the Solar Coronal XBPs from Hinode/XRT Observations

R. Kariyappa (Indian Institute of Astrophysics)

Monday 25th August 2008, 12:00pm
Pratt conference room, 60 Garden Street

The study of the spatial and temporal relationship between the solar coronal X-ray bright points (XBPs) and photospheric and chromospheric magnetic features is an important issue in Physics of the Sun. The Hinode/XRT observations provide an opportunity to investigate and understand more deeply the dynamical evolution and nature of the XBP than has been possible to date and to determine their connection to the magnetic features. Such high resolution observations and investigations would be helpful in understanding the role of oscillations and nature of the waves associated with XBPs to heat the corona. A 7-hr time sequence of the soft X-ray images, obtained on April 14, 2007 in a quiet region near the center of the solar disk using X-Ray Telescope (XRT) on-board the Hinode mission, have been analyzed. The aim is to observe the intensity oscillatory phenomena in coronal XBPs of different brightness levels and to bring out the differences, if any, in the period of intensity variations and heating mechanism during their dynamical evolution. The important results of these analysis of XBPs will be discussed in this talk.


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