Peak Flux Distributions of Solar Radio Type-i Bursts from Highly Resolved Spectral Observations
Abstract
Solar radio type-I bursts were observed on 2011 January 26 by high resolution observations with the radio telescope AMATERAS in order to derive their peak flux distributions. We have developed a two-dimensional auto burst detection algorithm that can distinguish each type-I burst element from complex noise storm spectra that include numerous instances of radio frequency interference (RFI). This algorithm removes RFI from the observed radio spectra by applying a moving median filter along the frequency axis. Burst and continuum components are distinguished by a two-dimensional maximum and minimum search of the radio dynamic spectra. The analysis result shows that each type-I burst element has one peak flux without double counts or missed counts. The peak flux distribution of type-I bursts derived using this algorithm follows a power law with a spectral index between 4 and 5.
- Publication:
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The Astrophysical Journal
- Pub Date:
- May 2013
- DOI:
- 10.1088/2041-8205/768/1/L2
- Bibcode:
- 2013ApJ...768L...2I
- Keywords:
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- Sun: corona;
- Sun: radio radiation