On the power and frequency of p-modes in sunspots

dc.contributor.author	Kumar, B
dc.contributor.author	Tripathy, S. C
dc.contributor.author	Jain, R
dc.contributor.author	Deshpande, M. R
dc.date.accessioned	2008-02-23T11:08:47Z
dc.date.available	2008-02-23T11:08:47Z
dc.date.issued	2000
dc.identifier.citation	BASI, Vol. 28, No. 1, pp. 93 - 94	en
dc.identifier.uri	http://hdl.handle.net/2248/2043
dc.description.abstract	A time series of GONG Dopplergrams has been used to measure the velocity fluctuations in the sunspot and quiet photosphere simultaneously. The power spectrum analysis shows that the power of the predominant p-mode is reduced in the sunspot region by 36 to 51% as compared to the quiet photosphere. Our results also show a relative frequency shift of the power envelope of these modes of the order of 70 to 300 ?Hz.	en
dc.format.extent	165717 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en	en
dc.publisher	Astronomical Society of India	en
dc.relation.uri	http://adsabs.harvard.edu/abs/2000BASI...28...93K	en
dc.subject	Sun: oscillations	en
dc.subject	Sun: photosphere	en
dc.subject	Sun: sunspots	en
dc.title	On the power and frequency of p-modes in sunspots	en
dc.type	Article	en