Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-03-12
Astronomy and Astrophysics
Astrophysics
To appear in the proceedings of Helios- and Asteroseismology at the Dawn of the New Millennium, ESA-SP 464, Ed. A. Wilson. Req
Scientific paper
We have analysed temporal evolution in centroid frequencies and splitting coefficients of solar f-modes obtained from MDI/SOHO. The data were divided into 20 sets covering a period from May 1, 1996 to August 31, 2000. The variation in frequencies is estimated to be 68 nHz over the period of four years which includes the rapidly rising phase of the solar cycle 23. This change is much smaller than that observed for p-mode frequencies. It is also noticed that the f-mode frequencies appear to be weakly correlated with solar activity indices as compared to the p-mode frequencies. We have also inferred the relative change in the solar radii and notice a 1 year periodicity which may be associated with the solar cycle variation.
Bhatnagar Anupam
Jain Kiran
Tripathy Sushant C.
No associations
LandOfFree
Temporal evolution of f-mode frequencies and radius does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Temporal evolution of f-mode frequencies and radius, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temporal evolution of f-mode frequencies and radius will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-401706