Please use this identifier to cite or link to this item:
http://hdl.handle.net/2248/5609
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Singh, J | - |
dc.contributor.author | Ravindra, B | - |
dc.contributor.author | Selvendran, R | - |
dc.contributor.author | Kumaravel, P | - |
dc.contributor.author | Priyal, M | - |
dc.contributor.author | Priya, T. G | - |
dc.contributor.author | Amareswari, K | - |
dc.date.accessioned | 2011-11-03T10:56:08Z | - |
dc.date.available | 2011-11-03T10:56:08Z | - |
dc.date.issued | 2012-02 | - |
dc.identifier.citation | Research in Astronomy and Astrophysics, Vol. 12, No. 2, pp. 201-211 | en |
dc.identifier.uri | http://hdl.handle.net/2248/5609 | - |
dc.description | Open Access | en |
dc.description | ERRATUM: “Determination of the chromospheric quiet network element area index and its variation between 2008 and 2011” (RAA, Vol. 12, p.201 [2012]) | - |
dc.description.abstract | Generally it has been considered that the plages and sunspots are the main contributors to the solar irradiance. There are small scale structures on the sun with intermediate magnetic fields that could also contribute to the solar irradiance. It has not yet been quantified how much of these small scale structures contribute to the solar irradiance and how much it varies over the solar cycle. In this paper, we used Ca II K images obtained from the telescope installed at Kodaikanal observatory. We report a method to separate the network elements from the background structure and plage regions. We compute the changes in the network element area index during the minimum phase of solar cycle and part of the ascending phase of cycle 24. The measured area occupied by the network elements is about 30% and plages less than 1% of the solar disk during the observation period from February 2008 -2011. During the extended period of minimum activity it is observed that the network element area index decreases by about 7%compared to the area occupied by the network elements in 2008. A long term study of network element area index is required to understand the variations over the solar cycle. | en |
dc.language.iso | en | en |
dc.publisher | Chinese Academy of Sciences | en |
dc.relation.uri | http://dx.doi.org/10.1088/1674-4527/12/2/008 | - |
dc.relation.uri | http://dx.doi.org/10.1088/1674-4527/12/4/011 | - |
dc.rights | © Chinese Academy of Sciences | en |
dc.subject | Sun: Network | en |
dc.subject | Sun: Ca-K | en |
dc.subject | Sun: Solar Cycle | en |
dc.title | Determination of the choromospheric quiet network element area index and its variation during 2008 and 2011 | en |
dc.type | Article | en |
Appears in Collections: | IIAP Publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Erratum.pdf | Erratum for the article 2012 Res. Astron. Astrophys. 12 201 | 36.93 kB | Adobe PDF | View/Open |
Determination of the choromospheric quiet networ.pdf | 418 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.