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http://hdl.handle.net/2289/1631
Title: | An estimation of the plasma parameters in the solar corona using quasi-periodic metric type III radio burst emission |
Authors: | Ramesh, R. Satya Narayanan, A. Kathiravan, C. Sastry, Ch.V. Udaya Shankar, N. |
Keywords: | Sun: activity Sun: flares Sun: oscillations Sun: radio radiation |
Issue Date: | Feb-2005 |
Publisher: | EDP Sciences |
Citation: | Astronomy and Astrophysics, 2005, Vol.431, p353-357 |
Abstract: | We report radio observations of quasi-periodic type III burst emission from the solar corona in close association with the 2B/X2.8 flare of December 11, 2001 at two frequencies (151.5 and 109 MHz). The measured mean period was ≈11.6 s. We attempted to infer the plasma parameters of the region where the electron beams responsible for the observed type III emission were accelerated/injected using our data, and the values are the following: the Alfvén speed (vA) = 873± 427 km s-1; the electron density (Ne) ≈ 3.09 × 109 cm-3; the magnetic field strength (B) = 22 ± 11 G. |
URI: | http://hdl.handle.net/2289/1631 |
ISSN: | 0004-6361 |
Alternative Location: | http://dx.doi.org/10.1051/0004-6361:20041130 |
Copyright: | (2005) by the European Southern Observatory (ESO). |
Appears in Collections: | Research Papers (A&A) |
Files in This Item:
File | Description | Size | Format | |
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2005 A&A 431p353.pdf | 5p. | 1.06 MB | Adobe PDF | View/Open |
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