Bibcode
Serebryanskiy, A.; Ehgamberdiev, S.; Kholikov, S.; Fossat, E.; Gelly, B.; Schmider, F. X.; Grec, G.; Cacciani, A.; Palle, P. L.; Lazrek, M.; Hoeksema, J. T.
Bibliographical reference
New Astronomy, Volume 6, Issue 4, p. 189-195.
Advertised on:
6
2001
Journal
Citations
5
Refereed citations
4
Description
The IRIS network has accumulated full disk helioseismological data since
July 1989, i.e. a complete 11-year solar cycle. Since the last paper
publishing a frequency list [A&A 317 (1997) L71], not only has the
network acquired new data, but has also developed new co-operative
programs with compatible instruments [Abstr. SOHO 6/GONG 98 Workshop
(1998) 51], so that merging IRIS files with these co-operative program
data sets has made possible the improvement of the overall duty cycle.
This paper presents new estimations of low degree p-mode frequencies
obtained from this IRIS++ data bank covering the period
1989-1996, as well as the variation of their main parameters along the
total range of magnetic activity, from before the last maximum to the
very minimum. A preliminary estimation of the peak profile asymmetries
is also included.