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Wavelet-based Characterization of Small-scale Solar Emission Features at Low Radio Frequencies

Suresh, A; Sharma, R; Oberoi, D; Briggs, Franklin; Emrich, David; Goeke, R; Hazelton, B; Johnston-Hollitt, M; Kaplan, D L; Ord, S M; Prabu, T; Rogers, A. E. E; Shankar, N.Udaya; Srivani, K. S.; Whitney, Alan; Williams, Andrew J.

Description

Low radio frequency solar observations using the Murchison Widefield Array have recently revealed the presence of numerous weak short-lived narrowband emission features, even during moderately quiet solar conditions. These nonthermal features occur at rates of many thousands per hour in the 30.72 MHz observing bandwidth, and hence necessarily require an automated approach for their detection and characterization. Here, we employ continuous wavelet transform using a mother Ricker wavelet for...[Show more]

CollectionsANU Research Publications
Date published: 2017
Type: Journal article
URI: http://hdl.handle.net/1885/218608
Source: The Astrophysical Journal
DOI: 10.3847/1538-4357/aa774a

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