Radio and EUV measurements of the equatorial coronal hole of February 25, 1999

Subramanian, K. R; Sundaram, G. A. S

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dc.contributor.author	Subramanian, K. R
dc.contributor.author	Sundaram, G. A. S
dc.date.accessioned	2009-08-07T10:58:20Z
dc.date.available	2009-08-07T10:58:20Z
dc.date.issued	2005
dc.identifier.citation	Sankarasubramanian, K., Penn, Matt., and Pevtsov, Alexei., eds., Large-scale structures and their role in solar activity., Proceedings of the 22nd Sacramento Peak Workshop held at the National Solar Observatory., Astronomical Society of the Pacific Conference Series Vol. 346, Sacramento Peak, Sunspot, New Mexico, 18 - 22 October 2004, USA, pp. 245 – 250	en
dc.identifier.isbn	1-58381-214-8
dc.identifier.uri	http://hdl.handle.net/2248/4738
dc.description.abstract	We present here the observations of the equatorial coronal hole made at 109 MHz on February 25, 1999 with the Gauribidanur Radioheliograph. The brightness temperature of this coronal hole is about 1:7£105 K.We compare our observations with EUV measurements of EIT onboard SOHO. Ray-tracing calculations show that the observed brightness temperature of this coronal hole can be due a decrement in density by factor of 4 compared to the Newkirk's density model.	en
dc.language.iso	en	en
dc.publisher	Astronomical Society of the Pacific	en
dc.relation.uri	http://www.aspbooks.org/a/volumes/article_details/?paper_id=2779
dc.rights	© Astronomical Society of the Pacific	en
dc.subject	Sun	en
dc.subject	EUV Measurements	en
dc.subject	Equatorial Coronal Hole	en
dc.subject	Sunspot	en
dc.subject	Solar Activity	en
dc.subject	Solar Corona	en
dc.title	Radio and EUV measurements of the equatorial coronal hole of February 25, 1999	en
dc.type	Article	en