Low-frequency radio observations of the “quiet” corona during the descending phase of sunspot cycle 24

dc.contributor.author	Ramesh, R
dc.contributor.author	Anshu Kumari
dc.contributor.author	Kathiravan, C
dc.contributor.author	Ketaki, D
dc.contributor.author	Rajesh, M
dc.contributor.author	Vrunda, M
dc.date.accessioned	2021-06-27T04:12:24Z
dc.date.available	2021-06-27T04:12:24Z
dc.date.issued	2020-09-28
dc.identifier.citation	Geophysical Research Letters, Vol. 47, No. 18, e2020GL090426	en_US
dc.identifier.issn	1944-8007
dc.identifier.uri	http://hdl.handle.net/2248/7720
dc.description	Restricted Access	en_US
dc.description.abstract	We carried out a statistical study of the “quiet” solar corona during the descending phase of the Sunspot Cycle 24 (i.e., January 2015 to May 2019) using data obtained with the Gauribidanur RAdioheliograPH (GRAPH) at 53 and 80 MHz simultaneously. Our results show that the equatorial (east-west) diameters of the solar corona at the above two frequencies shrunk steadily. The decrease was found to be due to a gradual reduction in the coronal electron density (Ne). Independent estimates of Ne in the equatorial region of the “background” corona using white-light coronagraph observations indicate a decline consistent with our findings.	en_US
dc.language.iso	en	en_US
dc.publisher	The American Geophysical Union	en_US
dc.relation.uri	https://doi.org/10.1029/2020GL090426
dc.rights	© The American Geophysical Union
dc.title	Low-frequency radio observations of the “quiet” corona during the descending phase of sunspot cycle 24	en_US
dc.type	Article	en_US