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Time-latitude distribution of prominences for 10 solar cycles: a study using Kodaikanal, Meudon, and Kanzelhohe data

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dc.contributor.author Chatterjee, S
dc.contributor.author Manjunath, H
dc.contributor.author Banerjee, D
dc.contributor.author Ravindra, B
dc.contributor.author McIntosh, Scott W
dc.date.accessioned 2020-11-26T15:18:49Z
dc.date.available 2020-11-26T15:18:49Z
dc.date.issued 2020-03
dc.identifier.citation Earth and Space Science, Vol. 7, No. 3, e2019EA000666 en_US
dc.identifier.issn 2333-5084
dc.identifier.uri http://prints.iiap.res.in/handle/2248/7379
dc.description Open Access en_US
dc.description.abstract Solar prominences are structures of importance because of their role in polar field reversal. We study the long-term variation of the time latitude distribution of solar prominences in this article. To accomplish this, we primarily used the digitized disc-blocked Ca  K spectroheliograms as recorded from Kodaikanal Solar Observatory for the period of 1906–2002. For improving the data statistics we included full disc H  images from Meudon and Kanzelhohe Observatory, which are available after 1980. We developed an automated technique to identify the latitudinal locations of prominences in daily images from all three data sets. Derived time-latitude distribution clearly depicted poleward migration of prominence structures for 10 cycles (15–24). Unlike previous studies, we separated the rate of poleward migration during onset and near pole, using piece-wise linear fits. In most cases, we found acceleration in poleward migration with the change occurring near ±70 latitudes. The derived migration rates for such large number of solar cycles can provide important inputs toward understanding polar field buildup process. en_US
dc.language.iso en en_US
dc.publisher Wiley-Blackwell Publishing Ltd en_US
dc.relation.uri https://doi.org/10.1029/2019EA000666
dc.rights © The Authors
dc.title Time-latitude distribution of prominences for 10 solar cycles: a study using Kodaikanal, Meudon, and Kanzelhohe data en_US
dc.type Article en_US


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